CN115508904B - Method for delineating remote scenic spots of hydrothermal uranium ores based on element groups - Google Patents
Method for delineating remote scenic spots of hydrothermal uranium ores based on element groups Download PDFInfo
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- 239000010955 niobium Substances 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052701 rubidium Inorganic materials 0.000 claims description 3
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 3
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The application relates to a method for analyzing a geologic body by means of physical and chemical properties of the geologic body, in particular to a method for delineating a remote scenic region of a hydrothermal uranium ore based on an element group, which comprises the following steps: determining a plurality of element groups, wherein the plurality of element groups comprise a first element group, a second element group, a third element group and a fourth element group, the first element group comprises uranium and thorium, the second element group comprises one or more chalcophilic elements of uranium, the third element group comprises one or more sulfur-philic elements, and the fourth element group comprises one or more volatile elements; respectively determining an abnormal area corresponding to each element group in the investigation region; and (5) defining a remote scenic spot of the hydrothermal uranium ore in the investigation region based on the distribution condition of the abnormal region. According to the method provided by the embodiment of the application, the remote scenic region of the hydrothermal uranium ore can be defined more accurately.
Description
Technical Field
The application relates to a method for analyzing a geologic body by means of physical and chemical properties of the geologic body, in particular to a method for delineating a remote scenic region of a hydrothermal uranium ore based on an element group.
Background
The ore-forming fluid of the hydrothermal uranium ore is enriched with various other elements besides uranium, which undergo water-rock reaction and mass exchange with surrounding rock during migration, leading to enrichment of some elements together with uranium, and at the same time, multiple activities of the ore-forming fluid will also lead to changes in the content of some elements in the ore-forming zone, which are abnormal in content to some extent indicative of the presence of ore-forming effects, and whose abnormal zone of content is generally of a range greater than the distribution range of the uranium ore body, so that the distribution of the hydrothermal uranium ore deposit can be preliminarily predicted by means of the abnormality of the element content.
Some elements have been proposed that can be used to predict the distribution of the transuranic, but predictions made with anomalies in the individual element content may not be accurate enough.
Disclosure of Invention
The present application has been made in view of the above problems, and has been made to provide a method of delineating a remote region of a hydrothermal uranium ore based on an elemental set that overcomes or at least partially solves the above problems.
The embodiment of the application provides a method for delineating a remote scenic region of a hydrothermal uranium ore based on an element group, which comprises the following steps: determining a plurality of element groups, wherein the plurality of element groups comprise a first element group, a second element group, a third element group and a fourth element group, the first element group comprises uranium, the second element group comprises one or more chalcogen-incompatible elements of uranium, the third element group comprises one or more sulfur-philic elements, and the fourth element group comprises one or more volatile elements; respectively determining an abnormal region corresponding to each element group in the investigation region, wherein the abnormal region is a region with the content of at least one element in the element groups higher than a corresponding abnormal threshold value, and the abnormal threshold value is determined based on the content distribution condition of the corresponding element in the investigation region; and defining a remote scenic spot of the hydrothermal uranium ore in the investigation region based on the distribution condition of the abnormal region, wherein the region in which the abnormal region corresponding to at least one element group is distributed is defined as the remote scenic spot of the hydrothermal uranium ore.
According to the method provided by the embodiment of the application, the remote scenic region of the hydrothermal uranium ore can be defined more accurately.
Drawings
Figure 1 is a flow chart of a method of delineating a remote field of a transthermic uranium ore based on an element group in accordance with an embodiment of the present application;
FIG. 2 is a schematic representation of the content distribution of elements in a first element group in a survey area according to an embodiment of the present application;
FIG. 3 is a schematic representation of the content distribution of elements in a third element group in an investigation region according to an embodiment of the present application;
fig. 4 is a schematic diagram showing a content distribution of elements in a fourth element group in an investigation region according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are one embodiment, but not all embodiments, of the present application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present application belongs. If, throughout, reference is made to "first," "second," etc., the description of "first," "second," etc., is used merely for distinguishing between similar objects and not for understanding as indicating or implying a relative importance, order, or implicitly indicating the number of technical features indicated, it being understood that the data of "first," "second," etc., may be interchanged where appropriate. If "and/or" is present throughout, it is meant to include three side-by-side schemes, for example, "A and/or B" including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously.
The embodiment of the application provides a method for delineating a remote scenic region of a uranium deposit of a hydrothermal solution based on an element group, and referring to fig. 1, the method comprises the following steps:
Step S102: multiple element groups are determined. The plurality of element groups includes a first element group, a second element group, a third element group, and a fourth element group, the first element group may include uranium, thorium, the second element group may include one or more chalcophilic elements of uranium, the third element group may include one or more sulfur philic elements, and the fourth element group may include one or more volatile elements.
Step S104: and respectively determining an abnormal area corresponding to each element group in the investigation region. An anomaly region refers to a region in which the content of at least one element of the group of elements is higher than a corresponding anomaly threshold value, where the anomaly threshold value may be determined based on the content distribution of the corresponding element in the survey region.
Step S106: and (5) defining a remote scenic spot of the hydrothermal uranium ore in the investigation region based on the distribution condition of the abnormal region. Specifically, in step S104, an area in which an abnormal area corresponding to at least one element group is distributed may be defined as a remote area of the hydrothermal uranium ore.
The remote scenic spot refers to a geological area which is favorable for mineral distribution and is defined by taking a small amount of data as a basis under the condition of low geological work degree in the regional mineral investigation process.
The survey area may be an area selected by a person skilled in the art to be subjected to a hydrothermal uranium mine survey according to any suitable method, and there may be a certain geological work basis in the survey area, for example, there may be hydrothermal uranium mine bodies which have been found in the survey area, where the method provided by the present application may be used to define a remote scenic spot of hydrothermal uranium mine in an area in the survey area where no further geological work has been performed, so as to guide the development of the next geological work.
In step S102, a plurality of element groups are first determined. Some elements capable of indicating the distribution of the transudate uranium ore have been proposed in the related art, but it is difficult to more accurately delineate the distant scenic region of the transudate uranium ore by means of the content of a single element or several independent elements, and these elements may also migrate under the influence of the surface effect after the uranium ore is formed, so that it is difficult to effectively reflect the location of the uranium ore formation site.
In order to more accurately delineate the remote areas of the hydrothermal uranium ores, the application provides four different element groups, each element group comprises one or more elements, the elements in the same element group are identical or similar in property, but the elements in different element groups are not identical in property. The element groups can be enriched in the ore-forming fluid, and the surface effect of the formed uranium ores usually does not affect all the element groups due to the different properties of the element groups, so that the definition of the remote scenic region of the uranium ores by integrating the element content conditions in the element groups has higher accuracy.
The first element group is an mineralising element group which comprises predominantly uranium, which is a characteristic enrichment element in the formation of hydrothermal uranium ores. In some embodiments, the first element group may include only uranium. In some embodiments, thorium may also be included in the first element group, and there is a correlation between thorium and uranium content and therefore may also be considered as a characteristic enrichment element in the formation of the hydrothermally enriched uranium ore.
The second element group comprises one or more of the same genus incompatible elements of mineral-forming elements (mainly uranium and thorium), and the incompatible elements are certain microelements which tend to be enriched in a liquid phase in the mineral crystallization process of magma or hot liquid, and are difficult to enter into the rock-forming mineral crystal structure due to the fact that independent minerals cannot be formed due to low concentration, and are limited by ionic radius, charge and chemical bond of the independent minerals, and are relatively enriched in residual magma or hot liquid. The generic incompatible element of uranium refers to an incompatible element that is enriched with uranium during the ore formation process, and common generic incompatible elements of uranium may include, but are not limited to, lithium, cesium, rubidium, niobium, and the like.
The third element group includes one or more of the elements, commonly known as the elements, which may include, but are not limited to, molybdenum, copper, lead, zinc, bismuth, antimony, etc., that are capable of reacting to the reducing characteristics of the ore stream and which will also co-enrich with uranium during the ore formation process.
The fourth element group comprises one or more volatile elements, wherein the volatile elements refer to components which are contained in magma and are easy to volatilize (are easy to volatilize when heated under the condition of air isolation), the volatile content in magma has a certain influence on magma crystallization and mineralization, and common volatile elements can comprise, but are not limited to, fluorine, sulfur and the like.
While the above specifically describes the properties of each of the four element groups and enumerates some elements that meet these properties, in the implementation process, those skilled in the art may determine the elements specifically included in each element group according to the actual situation in the investigation region, for example, may select from the above listed elements or select from other elements that meet the properties described above with reference to the physical and chemical detection results, the exploration data, and the geological data existing in the investigation region, and those skilled in the art may also specifically determine the number of elements included in each element group from the angles of investigation efficiency, investigation cost, accuracy requirement, and the like, which is not particularly limited in the present application.
After the element groups are determined, an abnormal region corresponding to each element group may be determined in the survey region in step S104, respectively. Specifically, if the content of at least one element in the element group in a slice region is higher than the anomaly threshold value corresponding to the element, the slice region may be considered as an anomaly region corresponding to the element group, the anomaly threshold value herein may be determined based on the content distribution of the element in the investigation region, and the specific determination method may refer to the element anomaly value determination method of the related art, and the method for determining the anomaly threshold value used in some embodiments will be described in detail in the related sections below, which will not be repeated here.
The person skilled in the art can set sampling points in the investigation region to sample, and analyze the element content of the collected samples to determine the content distribution condition of each element in the investigation region, thereby determining the abnormal region corresponding to each element group. The person skilled in the art may refer to the relevant rock chemistry analysis criteria for analysing the element content of the collected sample and may choose different analysis methods for different elements, e.g. for trace elements, e.g. elements of the second group of elements, may use ion mass spectrometry for determination, and for major elements, e.g. some of the thiophilic elements of the third group of elements may use fluorescence spectroscopy for determination, without limitation.
Fig. 2-4 show schematic content distribution diagrams of elements in some element groups determined in one embodiment, and it should be noted that fig. 2-4 only select content distribution of some elements as examples, and do not show all element groups, and do not mean that only the elements shown are included in the element groups shown.
In particular, fig. 2 shows the content distribution of uranium in a first element group in an investigation region 21. Fig. 3 shows the content distribution of molybdenum, copper, zinc, bismuth in the third element group, wherein the content distribution of molybdenum in the investigation region 21 is shown in section 3a, the content distribution of copper in the investigation region 21 is shown in section 3b, the content distribution of zinc in the investigation region 21 is shown in section 3c, and the content distribution of bismuth in the investigation region 21 is shown in section 3 e. Fig. 4 shows the content distribution of fluorine and sulfur in the fourth element group, wherein the content distribution of fluorine in the investigation region 21 is shown in section 4a and the content distribution of sulfur in the investigation region 21 is shown in section 4 b.
The content distribution diagrams shown in fig. 2 to 4 can be obtained by spatially interpolating the element content analysis results obtained by sampling, wherein the region where the gray color block is located represents the region where the content is higher than the anomaly threshold value, and the deeper the gray of the color block, the higher the indicated content, in this embodiment, three gray intervals are divided, and the element content is respectively indicated to be 1-2 times the anomaly threshold value, 2-4 times the anomaly threshold value, and 4-8 times the anomaly threshold value from shallow to deep.
The person skilled in the art can determine the anomaly corresponding to each element group by means of an element content profile similar to that shown in fig. 2-4, e.g. if there is only one element in an element group, the anomaly in the element content profile can be directly the anomaly of that element group. If a plurality of elements are contained in one element group, the content profiles of the elements may be superimposed so as to obtain an abnormal region of the element group. As an example, in the superimposition of the content distribution map, one element may be selected as a main element, the content of which is shown in gray blocks, while the other elements may be shown using contours of different colors, and only contours whose anomaly threshold values correspond may be shown, for convenience of recognition. And determining the abnormal area corresponding to the element group by means of the area where the gray color block is located and the area circled by the contour lines of the elements.
In some other embodiments, the person skilled in the art may also statistically analyze the obtained element content by other means, without having to form the content profiles of the elements shown in fig. 2-4.
After determining the abnormal areas corresponding to the element groups in step S104, the remote areas of the hydrothermal uranium ores can be defined according to the distribution conditions of the abnormal areas. Since the abnormal region in the application indicates that the content of at least one element in one element group in the region is higher than a preset value, if the abnormal region corresponding to one element group exists in one region, the region can be defined as a remote region of the hydrothermal uranium ore.
In some embodiments, the boundary of the abnormal region in the area may be directly determined as the boundary of the remote scenic region of the hydrothermal uranium deposit, and in some other embodiments, a certain buffer area may be disposed on the outer periphery of the boundary of the abnormal region in the area, and the boundary of the remote scenic region of the hydrothermal uranium deposit may be determined based on the boundary of the buffer area.
In some embodiments, if a plurality of abnormal regions corresponding to element groups are distributed in a region in a superimposed manner, boundaries of the remote areas of the transudate uranium ore may be collectively determined based on the boundaries of the abnormal regions, for example, such that the remote areas of the transudate uranium ore at least completely cover the abnormal regions, or at least completely cover the regions in which the abnormal regions overlap each other.
According to the method provided by the embodiment of the application, four element groups capable of indicating the distribution of the hydrothermal uranium ore field are provided, and the remote areas of the hydrothermal uranium ore are defined based on the abnormal areas of the element groups, so that the influence of the surface generation after the formation of the hydrothermal uranium ore on the migration of active elements can be overcome, and the defined remote areas of the hydrothermal uranium ore are more accurate.
In some embodiments, as described above, there may be known transthermic uranium ore bodies in the survey area, and therefore, prior to locating a transthermic uranium ore remote location in the survey area based on the distribution of the anomaly, the spatial relationship between the anomaly and the known transthermic uranium ore bodies in the survey area may be determined, thereby enabling further assurance of the accuracy of the locating a remote location.
It will be appreciated that if there is an apparently associated spatial relationship between the distribution of anomaly regions and known uranium ore bodies, then it is stated that the determined anomaly regions have a more pronounced indication of the distribution of uranium ore bodies, that delineating remote regions of the uranium ore bodies in unknown regions from these anomaly regions can have a higher degree of accuracy, and that if there is no associated spatial relationship between the distribution of anomaly regions and known uranium ore bodies, or between the anomaly regions corresponding to some groups of elements and known uranium ore bodies, it may be indicated that it is difficult to effectively indicate the distribution of uranium ore bodies for the anomaly regions corresponding to these groups of elements, that the elements included in these groups of elements may need to be adjusted, or that these groups of elements need to be excluded.
In some embodiments, after delineating the remote areas of the transreflective uranium ore, a level of the remote areas of the transreflective uranium ore may be further determined based on the number of superimposed-distributed anomaly areas in the remote areas of the transreflective uranium ore, the level characterizing the probability of inclusion in the remote areas of the transreflective uranium ore.
The determination of the level of the hot-liquid remote spot helps to better guide the next investigation, and it is understood that the greater the number of overlapping abnormal spots in the defined hot-liquid remote spot, the greater the variety of element groups enriched therein, which in turn means that the piece of remote spot has a higher ore-bearing probability than other remote spots having only a smaller number of abnormal spots, and can be preferentially conducted for the remote spot in the subsequent investigation.
In some embodiments, the levels of the remote areas of the transuranic may be divided into four levels from high to low based on the probability of inclusion. If the abnormal areas corresponding to the four element groups are distributed in the remote areas of the hydrothermal uranium ores in a superposed manner, the remote areas of the hydrothermal uranium ores can be considered as the first-level areas, and the ore-containing probability is highest. And the abnormal areas corresponding to any three element groups are distributed in a superposed manner, so that the remote scenic area of the hydrothermal uranium ore can be regarded as a secondary scenic area. And the abnormal areas corresponding to any two element groups are distributed in a superposed manner, so that the remote scenic area of the hydrothermal uranium ore can be considered to be three-level. Only an abnormal region corresponding to one element group is distributed, so that the hydrothermal uranium mine remote scenic region can be considered as four-level, and the mine-containing probability is lowest.
In some other embodiments, the person skilled in the art may further divide the grades of the remote sceneries by further combining the specific types of the element groups corresponding to the abnormal regions in the remote sceneries of the hydrothermal uranium ores, and it may be understood that although four element groups can indicate the distribution of the hydrothermal uranium ores, there may be a difference between the indication effects of different element groups, if two abnormal regions corresponding to two element groups are distributed in some two remote sceneries of the hydrothermal uranium ores, the grade of the two remote sceneries of the hydrothermal uranium ores may be further distinguished based on the specific element group types, and the person skilled in the art may select according to the actual situation and will not be described herein.
In some embodiments, as described above, the elements specifically included in the four elements may be determined based on existing geological data in the survey area. In particular, a plurality of element groups may be determined based on element group characteristics in the survey area. The element group characteristics refer to content distribution characteristics of each element in the investigation region, correlation relations among the content of each element, and the like. The method has the advantages that the elements without obvious enrichment characteristics can be removed in advance by determining the multiple element groups based on the element group characteristics, so that the efficiency of delineating the hydrothermal uranium mining investigation region is improved.
The element distribution characteristics and the like in the investigation region can be preliminarily acquired by means of remote sensing data and the like in the investigation region, and then the elements included in each element group are determined. In some embodiments, if a known hydrothermal uranium ore is present in the survey area, the elements included in the element group may be specifically determined for the element group characteristics of the location where the hydrothermal uranium ore is located.
In some embodiments, as described above, the abnormal region corresponding to each element group may be determined by means of sampling and element content analysis, and in particular, a plurality of sampling points may be set in the investigation region, and samples at each sampling point may be collected for element content analysis to determine the content distribution of the elements in the element group in the investigation region. Next, an anomaly threshold value corresponding to each element may be determined based on the content distribution of each element in the survey area, and an anomaly area corresponding to each element group may be determined based on the distribution of each element in the survey area and the anomaly threshold value corresponding to each element.
In some embodiments, sampling points can be set in the survey area in a grid-like manner, so that the comprehensiveness of sampling can be ensured, and the acquired element content can be conveniently analyzed later.
As an example, sampling points may be set at a grid density of 100m×100m, sampling may be performed at the sampling points in a drill manner, and a drill depth may be set to 10-20m. In some embodiments, to ensure accuracy of the sampling points, a sampling point layout of the survey area may be first established, and then the position of each sampling point may be calibrated by means of a handheld GPS detection device or the like. In some embodiments, to ensure that the collected samples are able to obtain more accurate data, care needs to be taken during sampling to avoid colluvial things, wind products, plant roots, etc., and to avoid collecting samples that are significantly affected by activities of humans, animals, etc.
In some embodiments, during the setting of the sampling points, the alteration belt in the investigation region may be determined first, and then the sampling points may be set in the alteration belt. The alteration zone herein may refer to a region where there is alteration, such as alkali exchange, silicidation, carbonation, etc., and the distribution of these alterations reflects the range of motion of the magma to some extent.
The alteration zones in the investigation region can be determined in the form of field surveys or based on geological drawings in the investigation region or the like, and then sampling points are set for these alteration zones so that the set sampling points can completely cover the range in which the alteration zones are located. For areas in the investigation region where no obvious surrounding rock alteration is found, the probability of existence of distribution of the hydrothermal uranium ore is low, and sampling points can be set in a relatively sparse manner or not, so that sampling efficiency is improved.
In some embodiments, in setting the sampling points, known hydrothermal uranium deposits in the survey area may be first determined, with the sampling points being set in a relatively dense manner in the region of the hydrothermal uranium deposit distribution. As an example, the sampling points may be set at a 100m×100m grid density in the investigation region, and further the sampling point grid density in the region of the distribution of the transthermic uranium deposit is increased to 20m×20m-50m×50m.
In such embodiments, the acquisition of the element content data at the known distribution areas of the transthermic uranium deposit is further facilitated by setting the sampling points in a relatively dense manner in the areas of the distribution of the transthermic uranium deposit, which on the one hand facilitates determining the spatial relationship between the anomaly area and the known transthermic uranium deposit, and on the other hand also facilitates more accurate calculation of the anomaly threshold value for each element.
In some embodiments, the anomaly threshold value for each element may be determined based on the arithmetic mean and standard deviation of the content of each element. As an example, the arithmetic mean Xo may be obtained by adding and subtracting 3 times the standard deviation from the stepwise culling mean, and then the standard deviation So after stepwise culling may be obtained, and the abnormality threshold t=xo±2so. The influence of element content which is obviously deviated from a normal value can be eliminated through a gradual elimination method, so that the calculated abnormal threshold value is more accurate. In some other embodiments, those skilled in the art may select other suitable manners to calculate the anomaly threshold value, which is only required to accurately reflect the enrichment characteristics of each element, which is not limited.
The methods of one or more of the embodiments referred to hereinabove are described and supplemented in greater detail below in connection with the definition of the hot liquid uranium ore vision field in the eastern precious region.
Firstly, the system collects geological, physical and chemical exploration and exploration data of the Guidong region, compiles 1:25000 drawings of magma rock, structure, mineralization, alteration, abnormality and the like, and selects a key pre-region of the Guidong region as an exploration region.
Based on the mineralized element group characteristics in the investigation region, four element groups are proposed, wherein the first element group comprises uranium, the second element group comprises rubidium, niobium, the third element group comprises molybdenum, copper, zinc, bismuth, antimony, and the fourth element group comprises fluorine, sulfur.
Then, three-dimensional fixed point sampling is carried out in an investigation region, the earth surface is controlled according to 100m multiplied by 100m grid density, known hydrothermal uranium mineralization points are properly encrypted to 20m multiplied by 20m to 50m multiplied by 50m, the sampling points cover all the alteration zones, drilling sampling is regulated according to drilling depth, sampling is carried out generally at 10m to 20m, the lithology, the position, the size, the weight, the mineralization alteration condition and the like of the sample are registered in detail while sampling, and a picture is taken.
The geochemical measurement procedure related in the field of earth surface sampling is executed, a sampling plot is used as a guide, a GPS track monitoring technology is introduced to carry out comprehensive fixed point, namely, all sampling points in the field are calibrated by utilizing a handheld GPS, and the influence of colluvial objects, aeolian substances, plant root systems and activities of human beings and animals is avoided during sampling.
After sampling, the collected sample is processed, firstly, a corundum jaw crusher is used for coarse crushing to 2-3mm, and the materials are uniformly mixed. Then, the sample was reduced to about 50g as a sub-sample, 100g was finely ground to less than 200 mesh using an agate mill (alloy mortar is not preferable to prevent iron contamination), and an analytical test sample was obtained, the weight of which was not less than 50g. After each sample is crushed, the container is strictly cleaned and cleaned by alcohol, and then the next sample can be crushed, so that cross contamination among the samples is avoided, and the analysis result of the element content is influenced.
Next, element content analysis is performed, and measurement is performed using an X-ray fluorescence spectrometer for a principal element, and a test procedure is performed with reference to related test standards in the art. For trace elements, the content determination is carried out by using a plasma mass spectrometer, the sample can be tested after being dissolved and fixed in volume, the working temperature and the relative humidity are respectively 20 ℃ and 30%, and the specific test flow is also carried out by referring to relevant test standards in the field.
Next, an abnormality threshold corresponding to each element is calculated based on the element content analysis result, and the abnormality threshold is calculated using an arithmetic average value (Xo) and a standard deviation (So) obtained by adding 3 times the standard deviation to the stepwise culling average value, specifically, the abnormality threshold t=xo±2so. After the abnormal threshold value is determined, a contour map of element content distribution is compiled, an abnormal region corresponding to each element group is determined, and the abnormal regions are displayed on a drawing of the investigation region in a superimposed mode.
The overlapping result shows that the overlapping of the abnormal areas and the known hydrothermal uranium ore bodies in the investigation area have a correlation in space position, and on the basis, the hydrothermal uranium ore remote areas are delineated based on the distribution condition of the abnormal areas, wherein the overlapping area of the abnormal areas with four element groups is a primary remote area, the overlapping area of the abnormal areas with three element groups is a secondary remote area, the overlapping area of the abnormal areas with two element groups is a tertiary remote area, and the area with only one element group corresponding to the abnormal area is a quaternary remote area.
In the subsequent construction process, the applicant has constructed 3 drilling holes in the primary remote zone determined above, and the results show that the drilling holes are all industrial holes, so that the accuracy of the remote zone of the hydrothermal uranium ore defined by the method is proved, and the prediction and investigation work of the hydrothermal uranium ore can be effectively pointed out.
The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (10)
1. A method for delineating a remote zone of a hydrothermal uranium ore based on an element group, comprising:
determining a plurality of element groups, the plurality of element groups comprising a first element group comprising uranium and thorium, a second element group comprising one or more chalcogen-incompatible elements of uranium, a third element group comprising one or more sulfur-philic elements, and a fourth element group comprising one or more volatile elements;
Respectively determining an abnormal region corresponding to each element group in a survey area, wherein the abnormal region is a region with the content of at least one element in the element groups higher than a corresponding abnormal threshold value, and the abnormal threshold value is determined based on the content distribution condition of the corresponding element in the survey area;
defining the remote scenic spot of the hydrothermal uranium ore in the investigation region based on the distribution condition of the abnormal region, wherein the region in which the abnormal region corresponding to at least one element group is distributed is defined as the remote scenic spot of the hydrothermal uranium ore;
Wherein a spatial relationship between the anomaly and a known transudate uranium deposit in the investigation region is determined before the transudate uranium deposit remote zone is defined in the investigation region based on the distribution of the anomaly;
If no associated spatial relationship exists between the determined abnormal region and the known hydrothermal uranium ore bodies in the investigation region, adjusting the elements included in each element group;
Determining a level of the remote areas of the transudate uranium ore based on the number of the abnormal areas distributed in superposition in the remote areas of transudate uranium ore if an obviously associated spatial relationship exists between the determined abnormal areas and the known transudate uranium ore bodies in the investigation region, the level characterizing an ore-containing probability in the remote areas of transudate uranium ore;
if the abnormal areas corresponding to the four element groups are distributed in the hydrothermal uranium ore remote areas in a superposed manner, determining the hydrothermal uranium ore remote areas as primary, wherein the ore-containing probability is highest;
if any abnormal areas corresponding to three element groups are distributed in the hydrothermal uranium ore remote scenic area in a superposed manner, determining that the hydrothermal uranium ore remote scenic area is secondary;
If any two abnormal areas corresponding to the element groups are distributed in the hydrothermal uranium ore remote scenic area in a superposed manner, determining that the hydrothermal uranium ore remote scenic area is three-level;
If only an abnormal region corresponding to one element group is distributed in the remote region of the hydrothermal uranium ore, determining that the remote region of the hydrothermal uranium ore is four-level, and the ore-containing probability is lowest.
2. The method of claim 1, wherein the determining a plurality of element groups comprises:
The plurality of element groups is determined based on element group characteristics in the survey area.
3. The method of claim 1 or 2, wherein the second group of elements comprises at least one of the following elements:
Lithium, cesium, rubidium, niobium.
4. The method of claim 1 or 2, wherein the third group of elements comprises at least one of the following elements:
Molybdenum, copper, lead, zinc, bismuth, and antimony.
5. The method of claim 1 or 2, wherein the fourth group of elements comprises at least one of the following elements:
Fluorine, sulfur.
6. The method of claim 1, wherein the separately determining the anomaly regions for each of the element groups in the survey area comprises:
Setting a plurality of sampling points in the investigation region;
Respectively collecting samples at each sampling point for element content analysis so as to determine the content distribution condition of elements in the element group in the investigation region;
determining the abnormal threshold value corresponding to each element based on the content distribution condition of each element in the investigation region;
the anomaly region for each of the element groups is determined based on the distribution of each element in the survey area and the anomaly threshold for each element.
7. The method of claim 6, wherein the sampling points are distributed in a grid.
8. The method of claim 6, wherein the setting a plurality of sampling points in the survey area comprises:
Determining an alteration zone in the survey area;
And setting the sampling point in the alteration zone.
9. The method of claim 6, wherein the setting a plurality of sampling points in the survey area comprises:
Determining known hydrothermal uranium deposits in the survey area;
The sampling points are arranged in a relatively dense manner in the region of the distribution of the pyro-liquid uranium deposit.
10. The method of claim 6, wherein the anomaly threshold value for each element is determined based on an arithmetic mean and standard deviation of the content of each element.
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