CN108169106A - A kind of sandstone-type uranium mineralization with respect oxidation divides the Mineralogical Criteria method for building up of band - Google Patents
A kind of sandstone-type uranium mineralization with respect oxidation divides the Mineralogical Criteria method for building up of band Download PDFInfo
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- CN108169106A CN108169106A CN201711215458.9A CN201711215458A CN108169106A CN 108169106 A CN108169106 A CN 108169106A CN 201711215458 A CN201711215458 A CN 201711215458A CN 108169106 A CN108169106 A CN 108169106A
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Abstract
The invention belongs to Uranium Deposits theory and look for ore deposit technical method field, and in particular to a kind of sandstone-type uranium mineralization with respect oxidation divides the Mineralogical Criteria method for building up of band, and this method comprises the following steps：Step 1:System acquisition sample；Step 2:Make light thin slice；Step 3:Observe mineral alteration degree；Step 4:Each oxidation point is established with interior Mineralogical Criteria.The method of the present invention is not only with reference to color standard, but also can provide microcosmic Mineralogical Criteria, and accurate for interlayer oxidized zone divides band to provide foundation.
Description
Technical field
The invention belongs to Uranium Deposits theory and look for ore deposit technical method field, and in particular to a kind of sandstone-type uranium mineralization with respect oxidation point
The Mineralogical Criteria method for building up of band.
Background technology
Oxidized zone is the important distinguishing mark of sandstone-type uranium deposit in sedimentary basin.Due to interlevel oxidation typical in basin
Band sandrock-type uranium deposit belongs to the epigenetic oxidation origin cause of formation, i.e. earth's surface oxidation water penetrates into primary reproducibility ledge for a long time, original ash
The ledge of color is oxidized to the oxidation alterations bands such as maroon, isabelline and yellow.This oxidized zone is to find interlayer oxidized zone
The important symbol of sandstone-type uranium mineralization with respect.Oxidized zone is subdivided into complete oxidation subzone, not exclusively by forefathers according to the color of oxidation alteration
Aoxidize subzone, redox zone and primary zone.In general, interlayer oxidized zone Zoning regularity is more apparent, the uranium ore formed
Change scale is bigger, and uranium ore body is richer.Therefore, the interlevel oxidation of Erecting and improving point looks for ore deposit to survey sandstone-type uranium mineralization with respect with distinguishing mark
It looks into and is of great significance.However, only there is one-sidedness come the simple oxidation point band that divides by alteration color, because naked eyes are unable to area
It is native oxide or epigenetic oxidation alteration zone to divide oxidized zone.It is well known that only epigenetic oxidation alteration could form sandstone
Type uranium deposit.
The color of oxidized zone is the macroscopic view reflection of altered mineral, forms the mineral species of rock and content difference, rock table
Reveal different colors.By observation to oxidation alteration than more sensitive mineral (such as biotite, feldspar, pyrite, limonite,
Breeze, uranium mineral etc.) alteration extent, it can provide and divide the mineralogical methods that oxidation divides band, and then can be to avoid mixed with comparing
The color confused directly divides oxidized zone.
Invention content
It is an object of the invention to overcome with the defects of color obscured directly divides oxidized zone is compared, a kind of utilization is provided
The method that Mineralogical Criteria divides oxidized zone.
The technical solution adopted in the present invention is：
A kind of sandstone-type uranium mineralization with respect oxidation divides the Mineralogical Criteria method for building up of band, and this method includes the following steps：
Step 1:System acquisition sample；
Step 2:Make light thin slice；
Step 3:Observe mineral alteration degree；
Step 4:Each oxidation point is established with interior Mineralogical Criteria.
Step 1 as described above:System acquisition sample, including：According to oxidized zone color, system acquisition different colours point
Sample in band.
Oxidized zone color system sampling as described above, it is desirable that acquisition maroon, red, yellow, canescence, grey and ash
The sample of green color.
Step 2 as described above:Light thin slice is made, including：Sample cutting flakiness will be collected in step 1, and is shelled
Light is to 0.03mm；Each sample at least makes three thin slices.
Step 3 as described above:Mineral alteration degree is observed, including：The black clouds in polarized light microscopy Microscopic observation sample
The mineral alterations such as mother, feldspar, pyrite, breeze, uranium mineral degree and form；Each mineral shape and alteration journey are recorded in detail
Degree and altered mineral type, for establishing detailed mineralogy distinguishing mark.
Step 4 as described above:Each oxidation is established to divide with interior Mineralogical Criteria, including：Each oxidation point is established with interior mineralogy
Mark：A. in complete oxidation subzone：Without pyrite, breeze and biotite mineral residue, rock intergranular and the filling of grain table are a large amount of brown
Iron ore；B. in incomplete oxidation subzone：Biotite part ferritization has breeze residual, no pyrite residual, but limonite has
There is liquid drugs injection iron ore in pyrite illusion；C. in redox zone：Without alteration, limonite disappears, and occurs for breeze, pyrite
The uranium bearing minerals such as pitch blende；D. in primary zone：Breeze, pyrite are without alteration, a small amount of choritization of no limonite, biotite.
The beneficial effects of the invention are as follows：A kind of sandstone-type uranium mineralization with respect oxidation that the present invention designs divides the Mineralogical Criteria of band to establish
Method is by observing to oxidation alteration than more sensitive mineral (such as biotite, feldspar, pyrite, limonite, breeze, uranium mineral
Deng) alteration extent, it can provide and divide the mineralogical methods that oxidation divides band, and then can be to avoid direct with the color obscured is compared
Oxidized zone is divided, not only with reference to color standard, but also microcosmic Mineralogical Criteria can be provided, accurate for interlayer oxidized zone divides band to provide
Foundation.
Description of the drawings
Fig. 1 is the flow for the Mineralogical Criteria method for building up that a kind of sandstone-type uranium mineralization with respect oxidation provided by the present invention divides band
Figure；
Fig. 2 is each zonal mineral marking pattern in uranium in Xinjiang mineral deposit.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of sandstone-type uranium mineralization with respect oxidation provided by the invention divides the Mineralogical Criteria method for building up of band, including
Following steps：
Step 1：System acquisition sample
According to oxidized zone color, sample of the system acquisition different colours point in.It is general require continuous acquisition maroon →
The sample of the different colours such as red → yellow → canescence → grey → celadon.
Step 2：Make light thin slice
Sample cutting flakiness will be collected in step 1, and is denuded to 0.03mm.Each color sample making is no less than 3
A light thin slice, to prevent omitting important alteration phenomenon.
Step 3：Observe mineral alteration degree
The mineral alterations degree such as biotite, feldspar, pyrite, breeze, uranium mineral in polarized light microscopy Microscopic observation sample
And form.Each mineral shape and alteration extent and altered mineral type are recorded in detail, to establish detailed mineralogy
Distinguishing mark.
Step 4：Each oxidation point is established with interior Mineralogical Criteria, is not only needed according to altered mineral type, it is also necessary to according to
Altered mineral form.
Under normal circumstances, in A. complete oxidations subzone：Without pyrite, breeze and biotite mineral residue, rock intergranular and
Grain table fills a large amount of limonites；B. in incomplete oxidation subzone：Biotite part ferritization has breeze residual, no pyrite
Residual, but limonite has pyrite illusion, liquid drugs injection iron ore occurs；C. in redox zone：Breeze, pyrite without alteration,
Limonite disappears, and the uranium bearing minerals such as pitch blende occurs；D. in primary zone：Breeze, pyrite are without alteration, no limonite, black clouds
Female a small amount of choritization.
Other specific embodiments：
Uranium in Xinjiang mineral deposit is carried out using the method for the present invention to aoxidize the specific implementation that the Mineralogical Criteria of band is divided to divide
Example step is as follows：
(1) from the drilling rock of red → light red → yellow → canescence → grey different colours in continuous acquisition uranium deposit
Heart sample.
(2) each sample is cut into 4 thin slices, and denuded to 0.03mm.
(3) biotite, feldspar, Huang Tie in Germany produces Axioskop40 type Zeiss polarized light microscopy Microscopic observation light thin slices
The mineral alterations such as ore deposit, breeze, uranium mineral degree and form.Each mineral shape and alteration extent and alteration ore deposit are recorded in detail
Species, to establish detailed mineralogy distinguishing mark.
(4) system comb the observation of light thin slice, record as a result, according to complete oxidation subzone, incomplete oxidation subzone, oxygen
Mineralogical characteristic in change-reduction intermediate zone and primary zone establishes each oxidation point with interior Mineralogical Criteria (as shown in Figure 2).
The present invention is explained in detail above in conjunction with drawings and examples, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make under the premise of present inventive concept is not departed from
Go out various change.The prior art may be used in the content not being described in detail in the present invention.
Claims (6)
1. a kind of sandstone-type uranium mineralization with respect oxidation divides the Mineralogical Criteria method for building up of band, it is characterised in that：This method includes following step
Suddenly：
Step 1:System acquisition sample；
Step 2:Make light thin slice；
Step 3:Observe mineral alteration degree；
Step 4:Each oxidation point is established with interior Mineralogical Criteria.
2. a kind of sandstone-type uranium mineralization with respect oxidation according to claim 1 divides the Mineralogical Criteria method for building up of band, feature exists
In：The step one:System acquisition sample, including：According to oxidized zone color, sample of the system acquisition different colours point in
Product.
3. a kind of sandstone-type uranium mineralization with respect oxidation according to claim 2 divides the Mineralogical Criteria method for building up of band, feature exists
In：The oxidized zone color system sampling, it is desirable that acquisition maroon, red, yellow, canescence, grey and celadon color
Sample.
4. a kind of sandstone-type uranium mineralization with respect oxidation according to claim 1 divides the Mineralogical Criteria method for building up of band, feature exists
In：The step two:Light thin slice is made, including：To be collected in step 1 sample cutting flakiness, and denude to
0.03mm；Each sample at least makes three thin slices.
5. a kind of sandstone-type uranium mineralization with respect oxidation according to claim 1 divides the Mineralogical Criteria method for building up of band, feature exists
In：The step three:Mineral alteration degree is observed, including：Biotite, feldspar, Huang in polarized light microscopy Microscopic observation sample
The mineral alterations such as iron ore, breeze, uranium mineral degree and form；Each mineral shape and alteration extent and alteration are recorded in detail
Mineral species, for establishing detailed mineralogy distinguishing mark.
6. a kind of sandstone-type uranium mineralization with respect oxidation according to claim 1 divides the Mineralogical Criteria method for building up of band, feature exists
In：The step 4:Each oxidation is established to divide with interior Mineralogical Criteria, including：Each oxidation point is established with interior Mineralogical Criteria：A. it is complete
In oxidized subzone：Without pyrite, breeze and biotite mineral residue, rock intergranular and grain table fill a large amount of limonites；B. not
In complete oxidation subzone：Biotite part ferritization has breeze residual, no pyrite residual, but limonite has pyrite vacation
As there is liquid drugs injection iron ore；C. in redox zone：Without alteration, limonite disappears, and pitch blende occurs for breeze, pyrite
Wait uranium bearing minerals；D. in primary zone：Breeze, pyrite are without alteration, a small amount of choritization of no limonite, biotite.
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Cited By (5)
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| CN109001422A (en) * | 2018-06-20 | 2018-12-14 | 华北水利水电大学 | A kind of geochemical discrimination method of granite choritization alteration extent |
| CN109580498A (en) * | 2018-12-24 | 2019-04-05 | 核工业北京地质研究院 | Oxidized zone geology recognition methods between a kind of sandstone-type uranium mineralization with respect ledge |
| CN109725004A (en) * | 2018-12-25 | 2019-05-07 | 核工业北京地质研究院 | A kind of method of the existence form and content of determining uranium deposit Uranium in Rock |
| CN109813712A (en) * | 2018-12-25 | 2019-05-28 | 核工业北京地质研究院 | A kind of richness uranium granite method for quickly identifying |
| CN111044515A (en) * | 2019-12-20 | 2020-04-21 | 核工业北京地质研究院 | Method for identifying favorable sections of hydrothermal uranium ore mineralization |
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| CN109580498A (en) * | 2018-12-24 | 2019-04-05 | 核工业北京地质研究院 | Oxidized zone geology recognition methods between a kind of sandstone-type uranium mineralization with respect ledge |
| CN109580498B (en) * | 2018-12-24 | 2021-10-19 | 核工业北京地质研究院 | Geological identification method for ore-bearing interlayer oxidation zone of sandstone-type uranium ore |
| CN109725004A (en) * | 2018-12-25 | 2019-05-07 | 核工业北京地质研究院 | A kind of method of the existence form and content of determining uranium deposit Uranium in Rock |
| CN109813712A (en) * | 2018-12-25 | 2019-05-28 | 核工业北京地质研究院 | A kind of richness uranium granite method for quickly identifying |
| CN111044515A (en) * | 2019-12-20 | 2020-04-21 | 核工业北京地质研究院 | Method for identifying favorable sections of hydrothermal uranium ore mineralization |
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