CN108931546A - Hyperspectrum-based lithium-containing pegmatite identification method - Google Patents
Hyperspectrum-based lithium-containing pegmatite identification method Download PDFInfo
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Abstract
The identification method of spodumene-containing pegmatite based on hyperspectrum, provided by the invention, firstly starts spectrum research of methylcard type lithium ore, performs spectrum test on a core sample by using a surface feature spectrometer, establishes a spectrum library of typical rocks and minerals of a methylcard ore deposit, summarizes spectrum characteristics of surrounding rocks, spodumene-containing pegmatite, spodumene-free pegmatite, spodumene single crystals and the like, establishes a quantitative inversion model of lithium content, and lays a foundation for the research of spodumene-containing pegmatite for prospecting ores. The method comprises the following steps: 1) performing a spectrum measurement on the sample; 2) analyzing the spectral characteristics of various rocks contained in the sample to obtain the spectral characteristics of the surrounding rock, the spodumene-containing pegmatite, the spodumene-free pegmatite and the spodumene single crystal; 3) analyzing spectral characteristics of surrounding rock, spodumene-containing pegmatite, spodumene-free pegmatite and spodumene single crystals, and searching for an indication meaning wave band of the spodumene-containing pegmatite; 4) and establishing a quantitative inversion model for identifying the spodumene-containing pegmatite.
Description
Technical field
The invention belongs to EO-1 hyperion research and applied technical fields, contain spodumene based on EO-1 hyperion more particularly to a kind of
Pegmatite recognition methods.
Background technique
In recent years, with the fast development of China's new-energy automobile industry, the demand of lithium battery is improved rapidly, lithium is made
Industry becomes maximum growth industry, simultaneously because industrial requirement extensive market, also causes lithium ore resources price to climb up and up.Lithium
Pyroxene is mainly therefore, to look for the research of mine to have important practical significance spodumene containing one of lithium minerals.
Sichuan methyl card ore field is located at western Sichuan methyl card area, is China or even lithium ore resources are most concentrated in the world
One of area, and spodumene is that Sichuan methyl card area finds main lithium ore resources.Feel the pulse (X03 in methyl card area new three
Feel the pulse) it is that this area finds newfound larger arteries and veins body, it is located at methyl card two-mica granite stock the north, apart from rock mass straight line
Distance about 3km moves towards nearly north and south, and tendency west, 25 °~35 ° of inclination angle, length is greater than 1050m, average thickness 66.4m, most thick to reach
110.17m.The full lode of arteries and veins body, lithia average grade 1.51%.The discovery that X03 feels the pulse is for methyl card area ultra-large type
Lithium mine is found to have significance.
Currently, being also short of very much for understanding of the people to the spectroscopy of lithium deposite, the present invention utilizes new No. three mines of methyl card
The control drilling hole ZK1101 of arteries and veins, opens the Spectroscopy Study of methyl card-type lithium mine for the first time.
This project is by China Geological Survey Bureau's geologic survey secondary items --- river Division A League Matches of Spanish Football base card large size lithium ore resources base
Comprehensive survey evaluates (project number：DD20160055 it) subsidizes.
Summary of the invention
The recognition methods of pegmatite containing spodumene based on EO-1 hyperion that the purpose of the present invention is to propose to a kind of, with river Division A League Matches of Spanish Football base card
Pegmatite type lithium mine is research area, the Spectroscopy Study of methyl card-type lithium mine is opened for the first time, with ground-object spectrum instrument to core sample
Product carry out wave spectrum test, establish the typical rocks in methyl card mineral deposit and the spectrum database of mineral, summarize research area's country rock, contain spodumene
Pegmatite, the Spectral Characteristic without spodumene pegmatite, spodumene monocrystalline etc., establish lithium content quantitative inversion model, are rock
Theoretical basis has been established in the summary of property data separation and indicator for deposit.
The technical scheme is that：
1. a kind of recognition methods of pegmatite containing spodumene based on EO-1 hyperion, which is characterized in that include the following steps：
1) wave spectrum measurement is carried out to sample；
2) analyze sample contained by each rocks Spectral Characteristic, obtain country rock, pegmatite containing spodumene, be free of spodumene it is big
The Spectral Characteristic of brilliant rock, spodumene monocrystalline；
3) country rock, pegmatite containing spodumene, the Spectral Characteristic without spodumene pegmatite, spodumene monocrystalline are analyzed, is found
Containing the pegmatitic indicative significance wave band of spodumene；
4) identification pegmatitic quantitative inversion model containing spodumene is established.
2. in the step 1), carrying out wave spectrum measurement using ASD ground-object spectrum instrument, being taken at different drilling depth intervals
Spectrometer contact probe is directed at sample by sample, and the sample Spectral Characteristic of the depth is saved after Spectral Characteristic is stablized, completes wave
Spectrometry.
3. in the step 1), including the steps that the spectrum database for establishing typical rocks and mineral；The spectrum database of foundation includes
According to the sample lithology and spectral information of drilling depth order recording where sample, sample serial number that main storage measurement obtains,
Photo, essential mineral description, the analysis of wave spectrum measurement result figure, Spectral Characteristic and conclusion under spectra number, drilling depth, mirror.
4. in the step 2), country rock, pegmatite containing spodumene, the wave spectrum without spodumene pegmatite, spodumene monocrystalline
Feature is respectively：Country rock overall reflectivity is lower, 0.2 hereinafter, whole wave spectrum is than more gentle, without apparent characteristic absorption；
The overall reflectivity of pegmatite containing spodumene is medium, 0.5 hereinafter, having obvious absorption special at 1413nm, 1900nm, 2207nm
Sign；It is medium on the upper side without spodumene pegmatite overall reflectivity, 0.7 hereinafter, having obvious absorb at 1413nm, 2197nm
Feature has faint Absorption Characteristics at 1900nm, 2345nm；Spodumene monocrystalline overall reflectivity is medium, 0.5 hereinafter,
There is absorption paddy at 1413nm, 1900nm, 2207nm, there are a wide slow Absorption Characteristics at 1000nm.
5. in the step 3), the wave band of the indicative significance of pegmatite containing spodumene is 1900nm, and pegmatite containing spodumene exists
The characteristic absorption of 1900nm can distinguish spodumene pegmatite with without spodumene pegmatite and country rock.
6. the step 4) includes：Sample different depth is calculated first in the absorption depth of the indicative significance wave band；Again
Measure the lithium content of corresponding depth；Make the lithium content trend that depth and corresponding depth are absorbed with the wave spectrum of change in depth
Figure show that the wave spectrum of different depth absorbs the quantitative inversion model of depth and lithium content.
7. in the step 4), when calculating indicative significance wave band absorption depth：It is tested according to the wave spectrum of sample difference hole depth
As a result, the wave spectrum for choosing 1880nm and 1895nm, which absorbs depth difference as wave spectrum at 1900nm, absorbs depth.
8. in the step 4), measure the lithium content of sample with Xray fluorescence spectrometer, the measurement method used for
JY/T016-1996-- Wavelength dispersion type x ray fluorescence spectrum method.
9. in the step 4), according to the principle of least square, show that the wave spectrum of different depth absorbs depth and lithium content
Quantitative inversion model and coefficient R2As a result it is：
Y=163704x+494.67
R2=0.7459.
Technical effect of the invention：
A kind of recognition methods of pegmatite containing spodumene based on EO-1 hyperion proposed by the present invention, with river Division A League Matches of Spanish Football base card pegmatite
Type lithium mine is research area, opens the Spectroscopy Study of methyl card-type lithium mine for the first time, is carried out with ground-object spectrum instrument to core sample
Wave spectrum test, establishes the typical rocks in methyl card mineral deposit and the spectrum database of mineral, summarizes research area's country rock, containing spodumene
Pegmatite, the Spectral Characteristic without spodumene pegmatite, spodumene monocrystalline etc., search out the indicative significance of pegmatite containing spodumene
Wave band establishes lithium content quantitative inversion model, and theoretical basis has been established in the summary distinguished for lithological information with indicator for deposit.
Detailed description of the invention
Fig. 1 is the Technology Roadmap of the method for the present invention.
Fig. 2 a is photo under certain sample mirror in the spectrum database established of the present invention.
Fig. 2 b is certain sample wave spectrum test result figure in the spectrum database of the invention established.
Fig. 3 is the wave spectrogram of methyl card main rock and mineral.
Fig. 4 is country rock, pegmatite containing spodumene, without spodumene pegmatite, spodumene monocrystalline comparison diagram.
Fig. 5 is the hole ZK1101 with absorption depth tendency chart at the 1900nm of change in depth.
Fig. 6 is Li content tendency chart of the hole ZK1101 with change in depth.
Fig. 7 is the hole ZK1101 Li content and the correlativity figure for absorbing depth.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
A kind of recognition methods of pegmatite containing spodumene based on EO-1 hyperion, includes the following steps：
1) wave spectrum measurement is carried out to sample；
2) analyze sample contained by each rocks Spectral Characteristic, obtain country rock, pegmatite containing spodumene, be free of spodumene it is big
The Spectral Characteristic of brilliant rock, spodumene monocrystalline；
3) country rock, pegmatite containing spodumene, the Spectral Characteristic without spodumene pegmatite, spodumene monocrystalline are analyzed, is found
Containing the pegmatitic indicative significance wave band of spodumene；
4) identification pegmatitic quantitative inversion model containing spodumene is established.
As shown in Figure 1, being that the present invention is based on the Technology Roadmaps of the pegmatite containing spodumene of EO-1 hyperion recognition methods.
The hole ZK1101 of research of the embodiment of the present invention is one of control drilling of new No. three mineral ores of methyl card, is located at new No. three
Southern side is leaned at the middle part of arteries and veins, and the aperture date is 2013.09.09, and the whole hole date is 2013.09.10, borehole coordinate X=3355114, Y
=429389, H=4336, bore direction angle are 90 °, and dip angle of hole is 60 °, drilling depth 126.49m.It is adopted altogether from the drilling
Collection core sample 123, grinds light thin slice 123.In terms of the lithology combination that ZK1101 drilling discloses, generally may be used from top to bottom
To be divided into 4 big sections：1. 0m~41.97m is pegmatite containing spodumene；2. 42.97m~69.80m is two mica quartz plate of andalusite
Rock；3. 69.80m~80m is pegmatite containing spodumene；4. 80m~126.49m is two Mica-quartzose schist of andalusite.
The wave spectrum of the hole ZK1101 core sample mainly carries out test with U.S. ASD ground-object spectrum instrument.ASD ground-object spectrum
Instrument be ASD company of the U.S. research and development a kind of hyperspectral measurement instrument, this use wave spectrum measuring instrument spectral range be 350nm~
2500nm includes mainly visible light, near-infrared and short infrared wave band, and the section band spectrum is sensitive to molecular composition, can be with
For measuring the subtle variation of mineral, composition and degree of metamorphism.
ASD basic functional principle：By spectrometer by the spectrum of probe intake target sample, become via analog-digital converter
Results of spectral measurements is shown on computer screen by digital value number, the portable computer for being connected to spectrometer in real time.In order to
The spectrum for measuring target sample, needs to measure three classes spectrum, and the first kind is known as half-light spectrum, i.e., when no light enters spectrometer by
The spectrum of instrument record (the usually noise figure of system itself depends on environment and instrument self-temperature)；Second class is reference
Spectrum or standard white plate spectrum, actually perfect diffusing radiation body --- the spectrum measured on standard white plate；Third class is sample
This spectrum or target optical spectrum are from the spectrum for needing to measure on the object studied.Finally, the reflectance spectrum of goal in research be
Target light spectrum is obtained divided by reference white plate spectral value under identical illumination condition.The instrument that the present embodiment spectral measurement uses
Parameter for ASDFieldspec-4 spectrometer, the spectrometer is as shown in table 1.
1 ASDFieldspec-4 spectrometer parameter list of table
Spectral measurement process：
1, the installation of instrument
(1) instrument power source line is external to power outlet
(2) communication connection
(3) computer and power outlet are linked
(4) accessory light source is connect with accessory power port on spectrometer unit
(5) fiber optic cable front end can connect pistol grip
(6) remote trigger is installed
(7) it connects fiber on contact probe head, and connects the power supply line of contact probe head
2, booting setting work
(1) spectrometer unit power switch is opened
(2) preheater apparatus 15 minutes, and every one suboptimization of progress in ten minutes when testing
(3) the RS3 software of ASD on computer is opened, new folder is for saving spectrum
(4) setting communication
(5) probe light source when opening contact
(6) test correction is carried out to blank
3, spectral measurement
Wave spectrum measurement work mainly carries out indoors, and about 25 DEG C of temperature, illumination condition is the searchlight that ASD is carried, and utilizes
The ASD ground-object spectrum instrument that above step has been debugged is sampled according to different drilling depth interval, and the present embodiment 1.8m that is averaged takes one
Contact probe is directed at the hole ZK1101 sample by a sample, saves sample spectra after spectral signature is stablized by 30 second time
Feature simultaneously completes wave spectrum test, last to be saved according to drilling depth number.When wave spectrum is tested, for the sample wave spectrum for making measurement
Accurate as far as possible, blank scaled time is primary every calibration in 10 minutes；For make the wave spectrum of sample eliminate as far as possible external interference because
Element measures 5 data for each sample, 5 data of measurement is averaging to obtain the spectrum of each sample.
One sample test information record sheet is all established for each sample, content mainly includes sample serial number, spectrum
Photo, essential mineral description, the analysis of wave spectrum measurement result figure, Spectral Characteristic and conclusion under number, drilling depth, mirror.
Next the spectrum database and test information record sheet of typical rocks and mineral are established；The above test information is established into wave
Library, entitled JJKZK1101 spectrum database are composed, the present embodiment spectrum database includes the sample test letter of 38 different drilling depth samples
Cease record sheet.The spectrum database of foundation includes according to the sample lithology and spectral information of drilling depth order recording where sample, master
It stores and measures photo under obtained sample serial number, spectra number, drilling depth, sample mirror, essential mineral description, wave spectrum measurement
The information such as result figure, Spectral Characteristic analysis and conclusion.It as shown in table 2, is the sample test information of some sample in spectrum database
Record sheet.
2 sample test information record sheet of table
All kinds of Spectrum of rock Characteristic Contrast analyses：The wave spectrum test result figure for analyzing each rocks in spectrum database, can obtain
The Spectral Characteristic of typical rocks and mineral out.
As shown in figure 3, being the wave spectrogram of methyl card sample main rock and mineral.
Fig. 3 a is the wave spectrogram of biotite schist.Analyzing its Spectral Characteristic is：Reflectivity is lower, generally below 0.2.
Whole wave spectrum is more gentle, and Absorption Characteristics are unobvious, there is slight absorption at 2205nm.
Fig. 3 b is the wave spectrogram of staurolite schist.Analyzing its Spectral Characteristic is：Reflectivity is lower, generally below 0.2.
Whole wave spectrum is more gentle, and Absorption Characteristics are unobvious, there is slight absorption at 2205nm.
The wave spectrogram of Fig. 3 c staurolite cordierite schist.Analyzing its Spectral Characteristic is：Reflectivity is lower, generally 0.2
Below.Whole wave spectrum is more gentle, and Absorption Characteristics are unobvious, there is slight absorption at 2205nm.
Fig. 3 d is the pegmatitic wave spectrogram containing spodumene.Analyzing its Spectral Characteristic is：Overall reflectivity is medium, 0.5
Below.There are obvious Absorption Characteristics at 1413nm, 1900nm, 2207nm, coincide with the Absorption Characteristics of spodumene.
Fig. 3 e is free from the pegmatitic wave spectrogram of spodumene.Analyzing its Spectral Characteristic is：Overall reflectivity is medium on the upper side,
Below 0.7.There are obvious Absorption Characteristics at 1413nm, 2197nm, there is Weak Absorption feature at 1900nm, 2345nm.
Fig. 3 f is the wave spectrogram of spodumene.Analyzing its Spectral Characteristic is that overall reflectivity is medium, below 0.5.?
There is absorption paddy at 1413nm, 1900nm, 2207nm, there are a wide slow Absorption Characteristics at 1000nm.
According to the Spectral Characteristic of above-mentioned each rocks, ZK1101 lithology can be mainly divided into pegmatite containing spodumene, be free of
Spodumene pegmatite, spodumene monocrystalline and country rock etc..Measurement result is sorted out, it can be deduced that draw a conclusion：
(1) the main rock of ZK1101 includes pegmatite containing spodumene, without spodumene pegmatite, country rock etc..Every kind of rock
Property wave spectrum all there is its unique Spectral Characteristic, can be used as distinguish every kind of lithology mark.
(2) 3 kinds of country rock Spectral Characteristics are almost the same, and overall reflectivity is lower, below 0.2.Whole wave spectrum than more gentle,
There is no apparent characteristic absorption.
(3) pegmatite containing spodumene is similar to the wave spectrum of spodumene monocrystalline, has the unique Absorption Characteristics of spodumene, can
Using as the high-spectrum remote-sensing indicator for deposit for looking for lithium mine from now on.
(4) pegmatite containing spodumene can be distinguished with without spodumene pegmatite by wave spectrum.
Find the wave band of the indicative significance of pegmatite containing spodumene：By country rock, pegmatite containing spodumene, be free of spodumene giant crystal
Rock wave spectrum is compared, as shown in Figure 4.Pegmatite wave spectrum has Absorption Characteristics, and country rock entirety wave spectrum is than more gentle, not bright
Aobvious Absorption Characteristics.Pegmatite characteristic absorption has at three, pegmatite containing spodumene, without spodumene pegmatite in 1413nm and
Characteristic absorption near 2200nm has nuance, has apparent difference at 1900nm.Pegmatite containing spodumene is in 1413nm
Absorption paddy in place's is more wide slow, and it is relatively narrow that paddy is absorbed at 1413nm without spodumene pegmatite, but it is little to absorb depth difference；Containing lithium
Pyroxene pegmatite absorbs paddy in 2207nm, absorbs the offset that paddy has 10nm without spodumene pegmatite, and at 2197nm, it absorbs
Depth difference is little；The Absorption Characteristics at 1900nm of pegmatite containing spodumene are obvious, but without spodumene pegmatite in 1900nm
Place's Absorption Characteristics are faint, and the two Absorption Characteristics differ greatly.Therefore, the characteristic absorption of 1900nm can be very good that spodumene will be contained
Pegmatite is distinguished with without spodumene pegmatite and country rock, is the pegmatitic instruction wave band containing spodumene.
It calculates indicative significance wave band and absorbs depth：For the hole ZK1101, ASD ground-object spectrum instrument measures 38 drill holes altogether
Wave spectrum, according to the wave spectrum test result of 38 different hole depths, the wave spectrum for choosing 1880nm and 1895nm absorbs depth difference conduct
Wave spectrum absorbs depth at 1900nm, and it is as shown in table 3 that the wave spectrum being calculated absorbs depth.
Wave spectrum absorbs depth at the drill hole 1900nm of 38,3 hole ZK1101 of table
Measure the hole ZK1101 lithium content：The Li content of 38, the hole ZK1101 spectral measurement depth is as shown in table 3, lithium content
Detection mainly use Xray fluorescence spectrometer (2100), the monitoring method used is JY/T 016-1996-- Wavelength dispersion type
X-ray fluorescence spectra method, measuring unit are Country Geological Experimental Testing Center of Chinese Academy of Geological Sciences.
The content of 3 hole ZK1101 sampled point Li of table
The quantitative inversion of ZK1101 sample lithium content based on EO-1 hyperion：By the wave of the calculated hole ZK1101 different depth
The Li content (table 3) that spectrum absorbs depth (table 2) corresponding depth compares and analyzes, and production has obtained the wave with change in depth
Spectrum absorbs depth and the Li content tendency chart with change in depth, as shown in Figure 5, Figure 6, is identical both known to comparison,
Absorption depth is higher at 1900nm, and Li content is higher.Depth is absorbed in country rock is generally less than 0.01, Li content several hundred to 2000
μg/g；Pegmatite containing spodumene absorbs depth between 0.02-0.08, and Li content is in 5000 to 18000 μ g/g, significantly larger than not
The absorption depth of pegmatite containing spodumene and country rock, Gu1900nmChu has indicative significance to spodumene content analysis, from now on may be used
And then spodumene content to be quantitatively evaluated using the absorption depth at 1900nm as the foundation for finding spodumene.
According to the principle of least square, obtaining linear analogue equation is Y=b X+a, and acquires coefficient R；Wherein, Y table
Show that lithium content, X are the absorption depth at 1900nm, b and a pass through the lithium content value of each hole depth measured and the absorption of 1900nm
Depth value acquires, and the calculation formula of a, b, R are as follows：
The wave spectrum of the hole ZK1101 different depth absorbs the quantitative inversion model and coefficient R of depth and lithium content2As a result
For：
Y=163704x+494.67
R2=0.7459
It can be by determining sample high-spectral data by the above quantitative inversion model, and calculate it and inhaled at 1900nm
Receive depth, can Inversion Calculation go out the lithium content information of sample, and then identify whether it is pegmatite containing spodumene, ordinary circumstance
Under, lithium content is that 2300 μ g/g or more can be identified as pegmatite containing spodumene.
It should be pointed out that specific embodiment described above can make those skilled in the art that the present invention be more fully understood
It creates, but do not limit the invention in any way is created.All do not depart from the technical solution of the spirit and scope of the invention
And its improve, it is encompassed by the protection scope of the invention patent.
Claims (9)
1. a kind of recognition methods of pegmatite containing spodumene based on EO-1 hyperion, which is characterized in that include the following steps：
1) wave spectrum measurement is carried out to sample；
2) Spectral Characteristic for analyzing each rocks contained by sample obtains country rock, pegmatite containing spodumene, without spodumene giant crystal
The Spectral Characteristic of rock, spodumene monocrystalline；
3) country rock, pegmatite containing spodumene, the Spectral Characteristic without spodumene pegmatite, spodumene monocrystalline are analyzed, finds and contains lithium
The pegmatitic indicative significance wave band of pyroxene；
4) identification pegmatitic quantitative inversion model containing spodumene is established.
2. the method according to claim 1, wherein carrying out wave using ASD ground-object spectrum instrument in the step 1)
Spectrometry, samples at different drilling depth intervals, and spectrometer contact probe is directed at sample, protects after Spectral Characteristic is stablized
The sample Spectral Characteristic of the depth is deposited, wave spectrum measurement is completed.
3. according to the method described in claim 2, it is characterized in that, in the step 1), including establishing typical rocks and mineral
Spectrum database the step of；The spectrum database of foundation includes sample lithology and the wave spectrum letter according to drilling depth order recording where sample
Breath, main storage measures photo under obtained sample serial number, spectra number, drilling depth, mirror, essential mineral describes, wave spectrum is surveyed
Measure result figure, Spectral Characteristic analysis and conclusion.
4. according to the method described in claim 3, it is characterized in that, in the step 2), country rock, pegmatite containing spodumene, no
Pegmatite containing spodumene, spodumene monocrystalline Spectral Characteristic be respectively：Country rock overall reflectivity is lower, 0.2 hereinafter, whole wave
Spectrum is than more gentle, without apparent characteristic absorption；The overall reflectivity of pegmatite containing spodumene is medium, 0.5 hereinafter,
There are obvious Absorption Characteristics at 1413nm, 1900nm, 2207nm；It is medium on the upper side without spodumene pegmatite overall reflectivity,
0.7, hereinafter, having obvious Absorption Characteristics at 1413nm, 2197nm, there is faint Absorption Characteristics at 1900nm, 2345nm；
Spodumene monocrystalline overall reflectivity is medium, 0.5 hereinafter, having absorption paddy at 1413nm, 1900nm, 2207nm, in 1000nm
There are a wide slow Absorption Characteristics at place.
5. according to the method described in claim 4, it is characterized in that, in the step 3), the indicative significance of pegmatite containing spodumene
Wave band be 1900nm, pegmatite containing spodumene 1900nm characteristic absorption can by spodumene pegmatite be free of spodumene
Pegmatite and country rock are distinguished.
6. method according to claim 1 to 5, which is characterized in that the step 4) includes：Calculate sample not first
With depth the indicative significance wave band absorption depth；The lithium content of corresponding depth is measured again；It makes with change in depth
Wave spectrum absorb the lithium content tendency chart of depth and corresponding depth, show that the wave spectrum of different depth absorbs determining for depth and lithium content
Measure inverse model.
7. according to the method described in claim 6, it is characterized in that, calculating indicative significance wave band in the step 4) and absorbing deeply
When spending：According to the wave spectrum test result of sample difference hole depth, the wave spectrum for choosing 1880nm and 1895nm absorbs depth difference conduct
Wave spectrum absorbs depth at 1900nm.
8. the method according to the description of claim 7 is characterized in that the lithium content for measuring sample is penetrated with X in the step 4)
Line Fluorescence Spectrometer, the measurement method used is JY/T 016-1996-- Wavelength dispersion type x ray fluorescence spectrum method.
9. according to the method described in claim 8, it is characterized in that, according to the principle of least square, being obtained not in the step 4)
The quantitative inversion model and coefficient R of depth and lithium content are absorbed with the wave spectrum of depth2As a result it is：
Y=163704x+494.67
R2=0.7459.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672531A (en) * | 2019-10-12 | 2020-01-10 | 东华理工大学 | Method for identifying heavy sand minerals by utilizing microscopic hyperspectral images |
| CN111738562A (en) * | 2020-05-29 | 2020-10-02 | 核工业北京地质研究院 | Method for selecting dominant horizon of sandstone uranium ore |
| CN111999260A (en) * | 2020-08-03 | 2020-11-27 | 自然资源实物地质资料中心 | Method for identifying lithium-containing pegmatite by thermal infrared spectrum and application of thermal infrared spectrum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU443965A1 (en) * | 1972-06-26 | 1974-09-25 | Нижневолжский научно-исследовательский институт геологии и геофизики | A way to search for conversation structures |
| CN103076292A (en) * | 2012-12-27 | 2013-05-01 | 中国地质科学院矿产资源研究所 | System and method for quantitatively evaluating concentration of rare earth in water body based on ground reflection spectrum |
| CN103604823A (en) * | 2013-11-13 | 2014-02-26 | 宣化钢铁集团有限责任公司 | Method for measuring contents of potassium, sodium, lead and zinc in iron ore |
| CN106682377A (en) * | 2015-11-05 | 2017-05-17 | 核工业北京地质研究院 | Method for extracting and quantitatively estimating hyperspectra of drilling rock core altered mineral |
| CN107576619A (en) * | 2017-09-04 | 2018-01-12 | 华北理工大学 | Detect EO-1 hyperion test and the analysis method of concrete erosion product |
-
2018
- 2018-04-08 CN CN201810307415.1A patent/CN108931546B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU443965A1 (en) * | 1972-06-26 | 1974-09-25 | Нижневолжский научно-исследовательский институт геологии и геофизики | A way to search for conversation structures |
| CN103076292A (en) * | 2012-12-27 | 2013-05-01 | 中国地质科学院矿产资源研究所 | System and method for quantitatively evaluating concentration of rare earth in water body based on ground reflection spectrum |
| CN103604823A (en) * | 2013-11-13 | 2014-02-26 | 宣化钢铁集团有限责任公司 | Method for measuring contents of potassium, sodium, lead and zinc in iron ore |
| CN106682377A (en) * | 2015-11-05 | 2017-05-17 | 核工业北京地质研究院 | Method for extracting and quantitatively estimating hyperspectra of drilling rock core altered mineral |
| CN107576619A (en) * | 2017-09-04 | 2018-01-12 | 华北理工大学 | Detect EO-1 hyperion test and the analysis method of concrete erosion product |
Non-Patent Citations (2)
| Title |
|---|
| 代晶晶 等: "遥感技术在川西甲基卡大型锂矿基地找矿填图中的应用", 《中国地质》 * |
| 王登红 等: "锂能源金属矿产深部探测技术方法与找矿方向", 《中国地质调查》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672531A (en) * | 2019-10-12 | 2020-01-10 | 东华理工大学 | Method for identifying heavy sand minerals by utilizing microscopic hyperspectral images |
| CN111738562A (en) * | 2020-05-29 | 2020-10-02 | 核工业北京地质研究院 | Method for selecting dominant horizon of sandstone uranium ore |
| CN111999260A (en) * | 2020-08-03 | 2020-11-27 | 自然资源实物地质资料中心 | Method for identifying lithium-containing pegmatite by thermal infrared spectrum and application of thermal infrared spectrum |
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