CN107576996A - A kind of method for building alkalic-metasomatism type uranium deposit ore_forming model - Google Patents
A kind of method for building alkalic-metasomatism type uranium deposit ore_forming model Download PDFInfo
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Abstract
The invention belongs to uranium exploration technical field, specifically discloses a kind of method for building alkalic-metasomatism type uranium deposit ore_forming model, and this method comprises the following steps：Step 1, it is created as ore deposit exposure basis spatial database；Step 2, determine crucial ore control factor；Step 3, according to the crucial ore control factor determined in step 2, be extracted into ore deposit actuation variable；Step 4, ore_forming model built according to the ore deposit actuation variable that is obtained in above-mentioned steps 3.The method of the present invention is capable of the summary ore control factor of abundant system by establishing spatial database and determining crucial ore control factor；The ore factor of key can be decomposited from the geological phenomenon of complexity with reference to establishing spatial database, determining crucial ore control factor and being extracted into ore deposit actuation variable, discloses its correlation, ore deposit hit rate is looked in raising, and ore deposit speed is looked in quickening.
Description
Technical field
The invention belongs to uranium exploration technical field, and in particular to a kind of side for building alkalic-metasomatism type uranium deposit ore_forming model
Method.
Background technology
Alkali explanation mineralization research occupies critical positions in hydrothermal deposit.Alkalic-metasomatism type uranium deposit bed refers in Mr.
Into sodium explanation (or potassium explanation) rock in, the alkali that is formed again explanation hydrothermal uranium deposits.Surveyed in the uranium geology in more than 50 years of China
During looking into, a number of alkali explanation lithotype uranium deposit has been found.South China is using Luo Du mineral deposits as representative, in northern China
Using splendid achnatherum ridge mineral deposit as representative.In Mineral exploration and research process, the firsthand information of a large amount of preciousnesses has been accumulated.Therefore, " alkali is handed over
The structure of the method for die Uranium Deposits pattern ", ore deposit target area, progress minerogenic potentiality are looked for for quick alkalic-metasomatism type uranium deposit of establishing
Prediction, raising prospecting result tool are of great significance.At present, the foundation of alkalic-metasomatism type uranium deposit ore_forming model is mainly according to erosion
Become feature, Geochemical Characteristics and source of hydrothermal fluids containing ore deposit etc., for building the research of alkalic-metasomatism type uranium deposit ore_forming model still
Technical method without maturation, difficulty are larger.Therefore, the research for carrying out " structure alkalic-metasomatism type uranium deposit into ore deposit mould " is extremely to be necessary
's.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, providing a kind of structure alkalic-metasomatism type uranium deposit
The method of ore_forming model, this method, which can improve, looks for ore deposit hit rate, and ore deposit speed is looked in quickening.
Realize the technical scheme of the object of the invention：A kind of method for building alkalic-metasomatism type uranium deposit ore_forming model, this method bag
Include following steps：
Step 1, it is created as ore deposit exposure basis spatial database；
Step 2, determine crucial ore control factor；
Step 3, according to the crucial ore control factor determined in step 2, be extracted into ore deposit actuation variable；
Step 4, ore_forming model built according to the ore deposit actuation variable that is obtained in above-mentioned steps 3.
Described step 1 specifically comprises the following steps：According to alkali metasomatic rock workspace area, a certain proportion of ratio is selected
Chi, carry out regional geologic reconnaissance, carry out rock-structure section measurement, all kinds of data digitalizations of collection and projective transformation are adopted
Ore deposit exposure basis spatial database is created as with GIS platform.
Engineer's scale in described step 1 is 1:1000~1:50000 engineer's scales；
All kinds of data in described step 1 put data, geologic information, Aero-magnetic data, remote sensing data including boat.
Described step 2 specifically comprises the following steps：
Step 2.1, rock-structure section measurement is carried out, determine that alkali metasomatic rock develops scale, and collecting work area alkali is handed over
Rock and stratum country rock sample；
Step 2.2, the mineral composition of observation rock sample and alteration features on microscope, quantitatively divide according to electron probe
Analysis method, to analyze the existence form of the chemical constituent of uranium mineral and uranium, determine the mineral group of alkali metasomatic rock and lithology contact surface
The control action of paired alkalic-metasomatism type uranium deposit bed；
Step 2.3, by the sample comminution of collection to 200 mesh, weight more than 50g, and its powder is led, trace element
Measure, determine control action of the chemical composition to alkalic-metasomatism type uranium deposit bed of alkali metasomatic rock and lithology contact surface；
Step 2.4, according to geological profile survey and remote sensing image interpretation, determine alkali metasomatic rock structure development situation, division
Tectonic episodes.
Chemical constituent and uranium that uranium mineral is analyzed using JXA-8100 electron microprobe examinations in described step 2.2
Existence form.
Be measured in described step 2.3 host element measure using AB-104LX ray fluorescence spectrometers or
PW2404X ray fluorescence spectrometers.
Trace element is measured in described step 2.3 and uses ELEMENT Plasma Mass Spectrometers.
Described step 3 specifically comprises the following steps：According to the alkali metasomatic rock scale extraction alkali explanation obtained in step 2.1
Rock variable；Lithology contact surface both sides rock forming mineral and chemical composition extraction lithology according to being obtained in step 2.2, step 2.3 connects
Contacting surface variable；According to obtaining determining structure development based on remote sensing image interpretation, the measurement of rock-structure section etc. in step 2.4
Situation and division tectonic episodes, extract constructed variable；And by above-mentioned alkali metasomatic rock variable, lithology contact surface variable, constructed variable
It is superimposed upon in the mineralization basic control survey of step 1 foundation, carries out variable combination and seek common ground, extraction mineralization becomes
Amount.
Described step 4 specifically comprises the following steps：According to the ore deposit actuation variable obtained in above-mentioned steps 3, put down using GIS
Platform or Corel-DRAW Software on Drawing alkali explanation lithotype Uranium Deposits ideograph.
The advantageous effects of the present invention are：The method of the present invention is capable of the summary ore control factor of abundant system, and
The ore factor of key can be decomposited from the geological phenomenon of complexity, the alkalic-metasomatism type uranium deposit ore_forming model has explicitly pointed out alkali
The control action that metasomatic rock, tectonism and lithology contact surface are formed to alkalic-metasomatism type uranium deposit bed, disclose uranium deposit distribution rule
Rule.This method can indicate whether that alkalic-metasomatism type uranium deposit looks for ore deposit target area, and provide thinking for geological analogs and geological research, improve
Ore deposit hit rate is looked for, is greatly enhanced prospecting result, realizes the technological break-through of Prospecting For Uranium；This method cover wide, validity is good,
Strong applicability.By establishing spatial database and determining crucial ore control factor, it is capable of the summary ore control factor of abundant system；With reference to
Pass can be decomposited from the geological phenomenon of complexity by establishing spatial database, determine crucial ore control factor and being extracted into ore deposit actuation variable
The ore factor of key, its correlation is disclosed, ore deposit hit rate is looked in raising, and ore deposit speed is looked in quickening.
Embodiment
The present invention is described in further detail with reference to embodiment.
A kind of method for building alkalic-metasomatism type uranium deposit ore_forming model provided by the present invention, this method comprise the following steps：
Step 1, it is created as ore deposit exposure basis spatial database；
According to alkali metasomatic rock workspace area, 1 is selected:1000~1:50000 engineer's scales, carry out regional geologic reconnaissance, enter
Row rock-structure section measurement, by all kinds of data (boat puts data, geologic information, the Aero-magnetic data, remote sensing data) numeral of collection
Change simultaneously projective transformation, ore deposit is created as using GIS (Geographic information system, GIS-Geographic Information System) platform
Exposure basis spatial database.
Step 2, determine crucial ore control factor；
The mineral composition that crucial ore control factor includes the development of alkali metasomatic rock scale, alkali metasomatic rock and lithology contact surface is handed over alkali
Control of the chemical composition of the control action of die uranium deposit, alkali metasomatic rock and lithology contact surface to alkalic-metasomatism type uranium deposit bed is made
With and alkali metasomatic rock structure development situation, tectonic episodes, it is determined that crucial ore control factor specifically includes following steps：
Step 2.1, rock-structure section measurement is carried out, determine that alkali metasomatic rock develops scale, and collecting work area alkali is handed over
Rock and stratum country rock sample, sample requirement is fresh, generally 3cm × 6cm × 9cm；
Step 2.2, the mineral composition of observation rock sample and alteration features on microscope, quantitatively divide according to electron probe
Analysis method, using JXA-8100 electron microprobe examinations, analyze the chemical constituent of uranium mineral and the existence form of uranium, determine that alkali is handed over
Control action of the mineral composition of Dai Yan and lithology contact surface to alkalic-metasomatism type uranium deposit bed；
Step 2.3, by the sample comminution of collection to 200 mesh, weight is led more than 50g, is micro respectively to its powder
Element determination, determine control action of the chemical composition to alkalic-metasomatism type uranium deposit bed of alkali metasomatic rock and lithology contact surface；
Measure Main elements include：SiO2、CaO、Al2O3、MgO、P2O5、MnO、TiO2、K2O、Na2O、Fe2O3、FeO；Survey
Fixed trace element includes：Li、Be、Sc、V、Cr、Co、Ni、Cu、Zn、Ga、Rb、Sr、Nb、Mo、Cd、In、Sb、Cs、Ba、Ta、
W、Tl、Pb、Bi、Th、U、Zr、Hf、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Y；
Measure host element measure uses AB-104LX ray fluorescence spectrometers or PW2404X ray fluorescence spectrometers；Survey
Fixed trace element uses ELEMENT Plasma Mass Spectrometers.
Step 2.4, according to geological profile survey and remote sensing image interpretation, determine alkali metasomatic rock structure development situation, division
Tectonic episodes, and determine alkali metasomatic rock ore-controlling structure, passable structure, ore-containing tectonic and broken ore deposit construction.
Step 3, according to the crucial ore control factor determined in step 2, be extracted into ore deposit actuation variable；
Alkali metasomatic rock variable is extracted according to the alkali metasomatic rock scale obtained in step 2.1；According in step 2.2, step 2.3
Obtained lithology contact surface both sides rock forming mineral and chemical composition extraction lithology contact surface variable；According to what is obtained in step 2.4
Structure development situation and division tectonic episodes are determined based on remote sensing image interpretation, rock-structure section measurement etc., extraction construction becomes
Amount；And above-mentioned alkali metasomatic rock variable, lithology contact surface variable, constructed variable are superimposed upon the mineralization basis that step 1 establishes
In spatial database, carry out variable combination and seek common ground, be extracted into ore deposit actuation variable.
Wherein, alkali metasomatic rock scale is more than 500m in alkali metasomatic rock variable20.5 is defined as, scale is in 500m2~100m2
Between be defined as 0.4, scale is in 100m2~10m2Between be defined as 0.3, scale is in 10m2~5m2Between be defined as 0.2, scale
In 5m2~1m2Between be defined as 0.1；Ore-containing tectonic is defined as 0.3 in constructed variable, passable structure 0.2, ore-controlling structure is
0.1；In lithology contact surface variable by rock forming mineral and chemical composition change greatly be defined as 0.2, change small being defined as 0.1.
Step 4, ore_forming model built according to the ore deposit actuation variable that is obtained in above-mentioned steps 3；
According to the ore deposit actuation variable obtained in above-mentioned steps 3, handed over using GIS platform or Corel-DRAW Software on Drawing alkali
Lithotype Uranium Deposits ideograph, it is built into the structure of ore deposit Pattern completion alkalic-metasomatism type uranium deposit ore_forming model.
The present invention is explained in detail above in conjunction with embodiment, but the present invention is not limited to above-described embodiment, at this
In the those of ordinary skill's possessed knowledge of field, various changes can also be made on the premise of present inventive concept is not departed from
Change.The content not being described in detail in the present invention can use prior art.
Claims (10)
- A kind of 1. method for building alkalic-metasomatism type uranium deposit ore_forming model, it is characterised in that this method comprises the following steps：Step 1, it is created as ore deposit exposure basis spatial database；Step 2, determine crucial ore control factor；Step 3, according to the crucial ore control factor determined in step 2, be extracted into ore deposit actuation variable；Step 4, ore_forming model built according to the ore deposit actuation variable that is obtained in above-mentioned steps 3.
- 2. a kind of method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 1, it is characterised in that described Step 1 specifically comprises the following steps：According to alkali metasomatic rock workspace area, a certain proportion of engineer's scale is selected, carries out regional geologic reconnaissance, carries out rock-structure Profile survey is made, by all kinds of data digitalizations of collection and projective transformation, ore deposit exposure basis space number is created as using GIS platform According to storehouse.
- A kind of 3. method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 2, it is characterised in that：Described Engineer's scale in step 1 is 1:1000~1:50000 engineer's scales.
- A kind of 4. method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 3, it is characterised in that：Described All kinds of data in step 1 put data, geologic information, Aero-magnetic data, remote sensing data including boat.
- 5. a kind of method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 4, it is characterised in that described Step 2 specifically comprises the following steps：Step 2.1, carry out the measurement of rock-structure section, determine that alkali metasomatic rock develops scale, and collecting work area alkali metasomatic rock and Stratum country rock sample；Step 2.2, the mineral composition of observation rock sample and alteration features on microscope, according to Electron probe quantitative analysis side Method, to analyze the existence form of the chemical constituent of uranium mineral and uranium, determine the mineral composition pair of alkali metasomatic rock and lithology contact surface The control action of alkalic-metasomatism type uranium deposit bed；Step 2.3, by the sample comminution of collection to 200 mesh, weight more than 50g, and its powder is led, trace element survey It is fixed, determine control action of the chemical composition to alkalic-metasomatism type uranium deposit bed of alkali metasomatic rock and lithology contact surface；Step 2.4, according to geological profile survey and remote sensing image interpretation, determine alkali metasomatic rock structure development situation, division construction Phase time.
- A kind of 6. method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 5, it is characterised in that：Described The existence form of the chemical constituent that uranium mineral is analyzed using JXA-8100 electron microprobe examinations and uranium in step 2.2.
- A kind of 7. method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 6, it is characterised in that：Described Host element measure is measured in step 2.3 and uses AB-104LX ray fluorescence spectrometers or PW2404X ray fluorescence spectras Instrument.
- A kind of 8. method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 7, it is characterised in that：Described Trace element is measured in step 2.3 and uses ELEMENT Plasma Mass Spectrometers.
- 9. a kind of method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 8, it is characterised in that described Step 3 specifically comprises the following steps：Alkali metasomatic rock variable is extracted according to the alkali metasomatic rock scale obtained in step 2.1；Obtained according in step 2.2, step 2.3 Lithology contact surface both sides rock forming mineral and chemical composition extraction lithology contact surface variable；According to obtained in step 2.4 based on Remote sensing image interpretation, rock-structure section measurement etc. determines structure development situation and division tectonic episodes, extracts constructed variable； And above-mentioned alkali metasomatic rock variable, lithology contact surface variable, constructed variable are superimposed upon the mineralization basic space that step 1 is established In database, carry out variable combination and seek common ground, be extracted into ore deposit actuation variable.
- 10. a kind of method for building alkalic-metasomatism type uranium deposit ore_forming model according to claim 9, it is characterised in that described Step 4 specifically comprise the following steps：According to the ore deposit actuation variable obtained in above-mentioned steps 3, lithotype is handed over using GIS platform or Corel-DRAW Software on Drawing alkali Uranium Deposits ideograph.
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| CN109813711A (en) * | 2018-12-25 | 2019-05-28 | 核工业北京地质研究院 | A kind of method of determining throrium ore metallogenic geochronology |
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| CN113534285A (en) * | 2021-06-17 | 2021-10-22 | 核工业北京地质研究院 | Method for constructing ore formation mode of hydrothermal thorium ore deposit |
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Application publication date: 20180112 |