CN113624689A - Rock and ore identification method - Google Patents
Rock and ore identification method Download PDFInfo
- Publication number
- CN113624689A CN113624689A CN202010371413.6A CN202010371413A CN113624689A CN 113624689 A CN113624689 A CN 113624689A CN 202010371413 A CN202010371413 A CN 202010371413A CN 113624689 A CN113624689 A CN 113624689A
- Authority
- CN
- China
- Prior art keywords
- rock
- mineral
- polaroid
- ore
- observing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 56
- 239000011707 mineral Substances 0.000 claims abstract description 56
- 239000002245 particle Substances 0.000 claims abstract description 30
- 230000008033 biological extinction Effects 0.000 claims abstract description 19
- 230000000007 visual effect Effects 0.000 claims abstract description 11
- 230000010287 polarization Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/21—Polarisation-affecting properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/0092—Polarisation microscopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0294—Particle shape
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/21—Polarisation-affecting properties
- G01N2021/217—Measuring depolarisation or comparing polarised and depolarised parts of light
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention belongs to the field of rock and ore identification, and particularly discloses a rock and ore identification method, which comprises the following steps: step 1, placing a sheet between two orthogonal polarizing plates; step 2, enabling a light source to enter from a polaroid on one side; step 3, observing the thin sheet from the light emergent side; step 4, rotating the two polaroids simultaneously; step 5, observing the thin slice again; step 6, repeating the step 4 and the step 5 until the interference color and the extinction angle characteristics of the minerals on the slice are completely mastered; step 7, determining the mineral type according to the interference color and the extinction angle characteristics; step 8, observing the characteristics of the mineral particles such as shape, granularity, arrangement mode and the like; and 9, carrying out rock naming according to the mineral type determined in the step 7 and the characteristics of the mineral particles observed in the step 8. The invention has the advantages that: the position of the mineral in the visual field can be kept unchanged all the time, the whole image effect of the sheet is highlighted, and the operation flow of identification is simplified.
Description
Technical Field
The invention belongs to the field of rock and ore identification, and particularly discloses a rock and ore identification method.
Background
Rock and ore identification is a basic working method in the geological and mineral field, and has important application in many fields such as basic geological survey, geological scientific research, geological engineering, mineral exploration, mineral deposit cause research, deposition environment research, geological environment protection and the like. Traditional rock and ore identification methods rely primarily on polarizing microscopes. The rock and mineral slice is placed on a stage of a polarizing microscope, one polarizing film is fixed on each stage, and the polarization directions of the two polarizing films are orthogonal to each other. During identification, the object stage is rotated to drive the rock and ore slice to rotate, and the type of the mineral is judged by observing the interference color and the extinction position of mineral particles in the slice. As the mineral flakes rotate, only the mineral particles in the very center of the field of view remain in place, while the other mineral particles change position as the flakes rotate. If one wants to identify a mineral particle, the particle must first be moved to the middle of the field of view, thereby adding an operation step. In addition, in some microscopes with photographing function, the positions of many mineral particles in the photographs before and after the rotation of the rock slice are changed, which is not convenient for comparison.
Disclosure of Invention
The invention aims to provide a rock and ore identification method, which ensures that the positions of all mineral particles in the identification process are kept unchanged by fixing a rock and ore slice and rotating a polaroid, is convenient for integral image comparison, can identify the mineral on the premise of not moving a certain mineral particle to the center of a visual field, highlights the integral image effect of the rock and ore slice, and simplifies the operation flow in identification.
The technical scheme for realizing the purpose of the invention is as follows: a rock and ore identification method is characterized in that: the method comprises the following steps:
step 1, placing a rock and ore slice between two polaroids with scales, the polarization directions of which are orthogonal to each other;
step 2, enabling a light source to enter from the polaroid on one side and penetrate through the sheet and the other polaroid;
step 3, observing minerals on the sheet from one side of the polaroid from which light exits;
step 4, rotating the two polaroids simultaneously, and keeping the polarization directions of the two polaroids orthogonal to each other;
step 5, observing the interference color and the extinction position of the minerals on the slice through the polaroid again;
step 6, repeating the step 4 and the step 5 until the interference color and the extinction angle characteristics of the minerals on the slice are completely mastered;
step 7, determining the mineral type according to the interference color and the extinction angle characteristics;
step 8, observing the characteristics of the mineral particles such as shape, granularity, arrangement mode and the like;
and 9, carrying out rock naming according to the mineral type determined in the step 7 and the characteristics of the mineral particles observed in the step 8.
In the step 1, the rock and ore slices are required to be fixed after being placed, and the rock and ore slices cannot move randomly in the process of rotating the polaroid; the connecting line of 0 degree and 180 degrees of the scale on the polaroid is the polarization direction of the polaroid; the initial polarization positions of the two polarizers need to be parallel to the central warp or the central weft of the visual field;
in the step 2, the light source is an LED or halogen lamp light source;
in the step 4, the two polarizing films are connected through a transmission device to ensure that the two polarizing films rotate at the same angular speed, or each polarizing film is connected with a motor respectively to ensure that the two polarizing films rotate at the same angular speed by controlling the two motors to rotate simultaneously; the polarization directions of the two polaroids are ensured to be orthogonal all the time in the rotating process;
in the step 5, observing the color of the mineral particles when the mineral particles are brightest in the visual field, namely, the interference color, and recording the scale on the polarizing plate in the step 1 corresponding to the central warp or the central weft of the visual field when the mineral particles are darkest, namely, the extinction position;
in the step 6, the included angles of the mineral particle joints, the bicrystal seams and the crystal edges and the middle meridian of the vision field in the vision field are measured, and the difference between the included angles and the extinction positions recorded in the step 5 is made to calculate the extinction angle.
The invention has the beneficial technical effects that: (1) the position of the mineral particles in the visual field is always unchanged, which is convenient for the overall comparison of images, and (2) the mineral can be identified on the premise of not moving a certain mineral particle to the center of the visual field, thereby simplifying the operation flow during identification.
Detailed Description
The present invention will be described in further detail with reference to examples.
The specific operation mode is as follows:
step 1, placing and fixing a rock and ore slice between two polaroids with scales, the polarization directions of which are orthogonal to each other, so as to ensure that the rock and ore slice cannot move randomly when the polaroids are rotated; adjusting the connecting line of the 0-degree scale and the 180-degree scale on the polarizer to be parallel to the central warp or the central weft of the vision field;
step 2, enabling the LED or halogen lamp light source to enter from the polaroid on one side and penetrate through the sheet and the other polaroid;
step 3, observing minerals on the sheet from one side of the polaroid from which light exits;
step 4, rotating the polaroids, wherein the two polaroids are connected through a transmission device to ensure that the two polaroids rotate at the same angular speed, or each polaroid is respectively connected with a motor, and the two polaroids rotate at the same angular speed by controlling the two motors to rotate simultaneously, so that the polarization directions of the two polaroids are always orthogonal in the rotating process;
step 5, observing the minerals on the sheet through the polaroid again, wherein the color of the mineral particles observed when the mineral particles are brightest in the visual field is an interference color, and the scale on the polaroid in the step 1 corresponding to the central warp or the central weft of the visual field is recorded when the mineral particles are darkest is an extinction position;
step 6, repeating the step 4 and the step 5 until the interference color of the mineral on the slice is completely mastered; measuring the included angles of mineral particle joints, bicrystal seams, crystal edges and the middle meridian of the vision field in the vision field, and calculating the extinction angle by making a difference with the extinction position recorded in the step 5;
step 7, determining the mineral type according to the interference color and the extinction angle characteristics;
step 8, observing the characteristics of the mineral particles such as shape, granularity, arrangement mode and the like;
and 9, carrying out rock naming according to the mineral type determined in the step 7 and the characteristics of the mineral particles observed in the step 8.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (6)
1. A method for identifying rock ore, comprising the steps of:
step 1, placing a rock and ore slice between two polaroids with scales, the polarization directions of which are orthogonal to each other;
step 2, enabling a light source to enter from the polaroid on one side and penetrate through the sheet and the other polaroid;
step 3, observing minerals on the sheet from one side of the polaroid from which light exits;
step 4, rotating the two polaroids simultaneously, and keeping the polarization directions of the two polaroids orthogonal to each other;
step 5, observing the interference color and the extinction position of the minerals on the slice through the polaroid again;
step 6, repeating the step 4 and the step 5 until the interference color and the extinction angle characteristics of the minerals on the slice are completely mastered;
step 7, determining the mineral type according to the interference color and the extinction angle characteristics;
step 8, observing the characteristics of the mineral particles such as shape, granularity, arrangement mode and the like;
and 9, carrying out rock naming according to the mineral type determined in the step 7 and the characteristics of the mineral particles observed in the step 8.
2. The method of claim 1, wherein: in the step 1, the rock and ore slices are required to be fixed after being placed, and the rock and ore slices cannot move randomly in the process of rotating the polaroid; the connecting line of 0 degree and 180 degrees of the scale on the polaroid is the polarization direction of the polaroid; the initial polarization positions of the two polarizers are required to be parallel to the central warp or weft of the field of view.
3. The method of claim 1, wherein: in the step 2, the light source is an LED or halogen lamp light source.
4. The method of claim 1, wherein: in the step 4, the two polarizing films are connected through a transmission device to ensure that the two polarizing films rotate at the same angular speed, or each polarizing film is connected with a motor respectively to ensure that the two polarizing films rotate at the same angular speed by controlling the two motors to rotate simultaneously; and the polarization directions of the two polaroids are ensured to be orthogonal all the time in the rotating process.
5. The method of claim 1, wherein: in the step 5, the color of the mineral particles is observed when the mineral particles are brightest in the visual field, namely the interference color, and the scale on the polarizing plate in the step 1 corresponding to the central warp or the central weft of the visual field is recorded when the mineral particles are darkest, namely the extinction position.
6. The method of claim 1, wherein: in the step 6, the included angles of the mineral particle joints, the bicrystal seams and the crystal edges and the middle meridian of the vision field in the vision field are measured, and the difference between the included angles and the extinction positions recorded in the step 5 is made to calculate the extinction angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371413.6A CN113624689A (en) | 2020-05-06 | 2020-05-06 | Rock and ore identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371413.6A CN113624689A (en) | 2020-05-06 | 2020-05-06 | Rock and ore identification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113624689A true CN113624689A (en) | 2021-11-09 |
Family
ID=78376479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010371413.6A Pending CN113624689A (en) | 2020-05-06 | 2020-05-06 | Rock and ore identification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113624689A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393355A (en) * | 2011-10-21 | 2012-03-28 | 中国石油天然气股份有限公司 | Method for measuring analcime in clastic rock |
| CN202794020U (en) * | 2012-07-27 | 2013-03-13 | 成都西图科技有限公司 | Polarization image observation and acquisition device |
| CN103439781A (en) * | 2013-09-06 | 2013-12-11 | 成都西图科技有限公司 | Polarizing microscopic image automatic acquisition and analysis device |
| CN203490417U (en) * | 2013-09-22 | 2014-03-19 | 成都西图科技有限公司 | Novel microscope used for observation of rock thin section |
-
2020
- 2020-05-06 CN CN202010371413.6A patent/CN113624689A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393355A (en) * | 2011-10-21 | 2012-03-28 | 中国石油天然气股份有限公司 | Method for measuring analcime in clastic rock |
| CN202794020U (en) * | 2012-07-27 | 2013-03-13 | 成都西图科技有限公司 | Polarization image observation and acquisition device |
| CN103439781A (en) * | 2013-09-06 | 2013-12-11 | 成都西图科技有限公司 | Polarizing microscopic image automatic acquisition and analysis device |
| CN203490417U (en) * | 2013-09-22 | 2014-03-19 | 成都西图科技有限公司 | Novel microscope used for observation of rock thin section |
Non-Patent Citations (1)
| Title |
|---|
| 徐南平: "《钢铁冶金实验技术及研究方法》", 冶金工业出版社, pages: 92 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101360989B (en) | Layered film fabrication method, layered film defect detection method, layered film defect detection device, layered film, and image display device | |
| CN102124398B (en) | Liquid crystal display device | |
| CN102725682B (en) | High speed liquid crystal polarization modulator | |
| CN101360990B (en) | Layered film fabrication method, layered film defect detection method, layered film defect detection device, layered film, and image display device | |
| WO2015101352A1 (en) | Optical polarisation modulation and detection apparatus and detection method | |
| CN102096241B (en) | Blue phase mode liquid crystal display device and method of manufacturing the same | |
| CN105388659B (en) | In-plane switching mode liquid crystal display device and display device | |
| US20140293198A1 (en) | Liquid crystal display device | |
| CN201654336U (en) | 3D liquid crystal glasses | |
| CN1963635A (en) | Infiltration type liquid crystal display | |
| US6492635B2 (en) | Method and device for automatically controlling a polarizing filter | |
| CA2065500C (en) | Light-polarizing material based on quinaldic acid derivatives | |
| JP2015230386A (en) | Antireflection film and image display device | |
| CN109863432A (en) | Dyestuff system polarizer for infrared wavelength regions | |
| JPH031649B2 (en) | ||
| TW557396B (en) | Liquid crystal display device | |
| CN113624689A (en) | Rock and ore identification method | |
| US2409407A (en) | Reflecting element for polarized light | |
| JP2000212310A (en) | Oriented film, its production and liquid crystal display device | |
| Fueten et al. | Quartz c-axes orientation determination using the rotating polarizer microscope | |
| Wang et al. | Polarimetric camera calibration using an LCD monitor | |
| CN105872403B (en) | The dynamic rage extension method of Mueller matrix imaging | |
| CN105093767A (en) | Liquid crystal display apparatus | |
| CN108267896A (en) | polarization imaging device and method | |
| JPH02503360A (en) | ferroelectric liquid crystal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211109 |