CN102879329A - Hydromica alteration comprehensive mapping method - Google Patents
Hydromica alteration comprehensive mapping method Download PDFInfo
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- CN102879329A CN102879329A CN 201110192334 CN201110192334A CN102879329A CN 102879329 A CN102879329 A CN 102879329A CN 201110192334 CN201110192334 CN 201110192334 CN 201110192334 A CN201110192334 A CN 201110192334A CN 102879329 A CN102879329 A CN 102879329A
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Abstract
The invention relates to a hydromica alteration comprehensive mapping method which successively comprises the following steps of: 1, carrying out net setting on an area to be measured according to the scale of 1:250000-1:5000; 2, carrying out alteration observation and preliminary calibration of alteration intensity; 3, acquiring several samples on each observation point of the net, carrying out flake observation on the samples, and carrying out precision calibration on alteration intensity; 4, letting a final judgment be consistent with a preliminary judgment and a precision judgment when the preliminary judgment is consist with the precision judgment; keeping the final judgment consistent with the precision judgment when the preliminary judgment is not strong hydromica alteration and the precision judgment is inconsistent with the preliminary judgment; and letting the final judgment be strong hydromica alteration when the preliminary judgment is strong hydromica alteration; and 5, carrying out hydromica alteration comprehensive mapping on the area to be measured according to the final judgment. The method provided by the invention is used to realize complete hydromica alteration mapping, has strong operationality and is of strong referential significance for prospecting of hydrothermal uranium ore.
Description
Technical field
The present invention relates to the comprehensive map plotting method of a kind of hydromica alteration, particularly relate to a kind of complete charting that realized, workable, and the hot-liquid type Prospecting For Uranium is had the comprehensive map plotting method of hydromica alteration of very strong reference significance.
Background technology
Alteration becomes the importance forefathers of ore control effect that sufficient understanding has been arranged to hot-liquid type uranium, and has divided the uranium mineralization types such as alkali explanation, acid explanation with the array configuration of alteration type.The research of alteration type becomes hot-liquid type uranium ore mineral deposit and dissects the content that must relate to.The relevant typical hot-liquid type uranium deposit achievement in research of forefathers, without unexceptional this partial content arranged all, and precedence relationship and array configuration according to alteration and uranium mineralization, uranium mineralization is divided into a plurality of minerogenetic serieses, such as hydromica-haematization-carbonic acid lithification uranium minerogenetic series etc., and set up the alteration phase time divide, the Alteration Zoning sign, be masked as foundation with these, predict the distant view target area of multi-disc success, obtained huge economic benefit.Therefore, alteration features research all is the key content of hot-liquid type uranium ore analysis-by-synthesis no matter be in the past, now or in the future.But up to now, also do not see the comprehensive map plotting method of complete alteration, and alteration has irreplaceable effect to prediction deep blind ore.
The hydromica alteration is a kind of formula alteration, show as peak green at rock, be easy to identification in the open air, at the numerous hot-liquid type uranium deposit of south China development area, this alteration all has demonstration on the earth's surface, field geology alteration charting workable, and instant effect have the effect of getting twice the result with half the effort to seeking the deep blind ore.Therefore needing badly provides a kind of hydromica alteration comprehensive map plotting method, to provide reference to the hot-liquid type Prospecting For Uranium.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of complete charting that realized, and is workable, and the hot-liquid type Prospecting For Uranium had the comprehensive map plotting method of hydromica alteration of very strong reference significance.
For solving the problems of the technologies described above, the comprehensive map plotting method of a kind of hydromica alteration of the present invention may further comprise the steps successively:
(1) survey grid is laid
According to the requirement to Regional Alteration charting precision to be measured, zone to be measured is laid according to the survey grid that 1: 250000～1: 5000 engineer's scale carries out, represent the survey grid that the net spacing is 2.5km at 1: 250000, represent the survey grid that the net spacing is 50m at 1: 5000; In the survey grid survey line each other joint be observation point; Zone to be measured is volcanics and/or grouan distributive province;
(2) alteration observation and alteration intensity are tentatively demarcated
Observation point on the survey grid is observed the rock in zone to be measured, gathers color, rock texture and the alteration type of regional rock to be measured;
Granular damouritization altered mineral all appears in rock forming mineral and stuff in green, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as strong hydromica alteration;
Granular damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and occurs planar damouritization altered mineral in the stuff, tentatively is judged as medium hydromica alteration;
The damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and does not occur planar damouritization altered mineral in the stuff, tentatively is judged as the weak hydromica alteration that waits;
The damouritization altered mineral does not all appear in rock forming mineral and stuff in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as normal rock;
(3) collected specimens and Accurate Calibration
Each observation point on the survey grid is gathered several samples;
The sample that collects is carried out thin slice observe, carry out alteration intensity Accurate Calibration;
Being replaced, when the alteration type is the hydromica alteration, accurately being judged as strong hydromica alteration by the alteration mineral greater than 50% percent by volume when rock forming mineral in the rock texture of sample;
When the percent by volume of rock forming mineral 20%～50% in the rock texture of sample is replaced, when the alteration type is the hydromica alteration, accurately is judged as medium hydromica alteration by the alteration mineral;
When the percent by volume of rock forming mineral in the rock texture of sample more than or equal to 5%, less than 20% replaced, when the alteration type is the hydromica alteration, accurately is judged as the weak hydromica alteration that waits by the alteration mineral;
Being replaced by the alteration mineral less than 5% percent by volume of rock forming mineral in the rock texture of sample accurately is judged as normal rock;
(4) alteration intensity contrast is analyzed and final deciding grade and level
When preliminary judgement when accurately judging that conclusion is consistent, finally judge conclusion and tentatively judge, accurately judgement is consistent;
When the conclusion of preliminary judgement is not strong hydromica alteration, accurately judges with preliminary when judging that conclusion is inconsistent, judge that finally conclusion is consistent with accurately judging;
When preliminary judgement conclusion is strong hydromica alteration, judge that finally conclusion is strong hydromica alteration;
(5) according to finally judging, the comprehensive charting of hydromica alteration is carried out in zone to be measured.
When ore field or mineral deposit are predicted, select 1: 250000～1: 100000 engineer's scale, when ore body is predicted, selected 1: 100000～1: 5000.
Each observation point on the survey grid is gathered 3 samples, and single sample is of a size of 5 * 5 * 5cm.
Adopt GIS software, final judgement conclusion is carried out the alteration numbering, strong hydromica alteration point is made as numeral 4, medium hydromica alteration is made as numeral 3, and weak hydromica alteration is made as numeral 2, and normal rock is made as numeral 1, observation point is projected on the GIS software with latitude and longitude coordinates or terrestrial coordinate, be numbered variable with alteration, drawing isoline figure finally finishes hydromica alteration charting; Utilize the comprehensive charting of hydromica alteration to carry out the hot-liquid type Prospecting For Uranium.
The present invention has realized complete hydromica alteration charting, and is workable, and the hot-liquid type Prospecting For Uranium is had very strong directive significance, has considerable economic benefit.
Utilize this method the comprehensive charting of hydromica alteration to be carried out in area, Quzhou, Zhejiang Province, area, white poplar river, Xinjiang and area, Huichang County, Jiangxi, utilize the comprehensive charting of hydromica alteration that obtains to carry out the hot-liquid type Prospecting For Uranium.Find that known mineral deposit all is positioned at strong hydromica alteration area, indicating strong hydromica alteration area is one of local area Prospecting For Uranium important symbol.The strong hydromica alteration area that has no mineral deposit, the distribution of ore deposit point in the comprehensive charting of hydromica alteration then is the key area of Prospecting For Uranium breakthrough in new district, only is distributed with the strong hydromica alteration area of ore deposit point, the ore deposit point can be developed into the mineral deposit by further work.
Embodiment
Embodiment one
(1) survey grid is laid
According to the requirement to Regional Alteration charting precision to be measured, zone to be measured is laid according to the survey grid that 1: 250000～1: 5000 engineer's scale carries out, represent the survey grid that the net spacing is 2.5km at 1: 250000, represent the survey grid that the net spacing is 50m at 1: 5000; When ore field or mineral deposit are predicted, select 1: 250000～1: 100000 engineer's scale, when ore body is predicted, selected 1: 100000～1: 5000; In the survey grid survey line each other joint be observation point; Zone to be measured is volcanics and/or grouan distributive province;
(2) alteration observation and alteration intensity are tentatively demarcated
Observation point on the survey grid is observed the rock in zone to be measured, gathers color, rock texture and the alteration type of regional rock to be measured;
Granular damouritization altered mineral all appears in rock forming mineral and stuff in green, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as strong hydromica alteration;
Granular damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and occurs planar damouritization altered mineral in the stuff, tentatively is judged as medium hydromica alteration;
The damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and does not occur planar damouritization altered mineral in the stuff, tentatively is judged as the weak hydromica alteration that waits;
The damouritization altered mineral does not all appear in rock forming mineral and stuff in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as normal rock;
(3) collected specimens and Accurate Calibration
Each observation point on the survey grid is gathered several samples, and single sample is 5 * 5 * 5cm;
The sample that collects is carried out thin slice observe, carry out alteration intensity Accurate Calibration;
Being replaced, when the alteration type is the hydromica alteration, accurately being judged as strong hydromica alteration by the alteration mineral greater than 50% percent by volume when rock forming mineral in the rock texture of sample;
When the percent by volume of rock forming mineral 20%～50% in the rock texture of sample is replaced, when the alteration type is the hydromica alteration, accurately is judged as medium hydromica alteration by the alteration mineral;
When the percent by volume of rock forming mineral in the rock texture of sample more than or equal to 5%, less than 20% replaced, when the alteration type is the hydromica alteration, accurately is judged as the weak hydromica alteration that waits by the alteration mineral;
Being replaced by the alteration mineral less than 5% percent by volume of rock forming mineral in the rock texture of sample accurately is judged as normal rock;
(4) alteration intensity contrast is analyzed and final deciding grade and level
When preliminary judgement when accurately judging that conclusion is consistent, finally judge conclusion and tentatively judge, accurately judgement is consistent;
When the conclusion of preliminary judgement is not strong hydromica alteration, accurately judges with preliminary when judging that conclusion is inconsistent, judge that finally conclusion is consistent with accurately judging;
When preliminary judgement conclusion is strong hydromica alteration, judge that finally conclusion is strong hydromica alteration;
(5) according to finally judging, the comprehensive charting of hydromica alteration is carried out in zone to be measured.The preferred GIS software that adopts, final judgement conclusion is carried out the alteration numbering, strong hydromica alteration point is made as numeral 4, medium hydromica alteration is made as numeral 3, and weak hydromica alteration is made as numeral 2, and normal rock is made as numeral 1, observation point is projected on the GIS software with latitude and longitude coordinates or terrestrial coordinate, be numbered variable with alteration, drawing isoline figure finally finishes hydromica alteration charting.
Utilize the comprehensive charting of hydromica alteration to carry out the hot-liquid type Prospecting For Uranium.
Embodiment two
(1) survey grid is laid
Zone to be measured is area, Quzhou, Zhejiang Province, and the scope in zone to be measured is: 118 ° 30 ' 00 of east longitude "～119 ° 30 ' 00 ", and 28 ° 40 ' 00 of north latitude "～29 ° 20 ' 00 ", area is about 7100 square kilometres; Select the survey grid laying that engineer's scale carried out in 1: 100000, represent the survey grid that the net spacing is 1km; In the survey grid survey line each other joint be observation point;
(2) alteration observation and alteration intensity are tentatively demarcated
Observation point on the survey grid is observed the rock in zone to be measured, gathers color, rock texture and the alteration type of regional rock to be measured;
Granular damouritization altered mineral all appears in rock forming mineral and stuff in green, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as strong hydromica alteration;
Granular damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and occurs planar damouritization altered mineral in the stuff, tentatively is judged as medium hydromica alteration;
The damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and does not occur planar damouritization altered mineral in the stuff, tentatively is judged as the weak hydromica alteration that waits;
The damouritization altered mineral does not all appear in rock forming mineral and stuff in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as normal rock;
(3) collected specimens and Accurate Calibration
Each observation point on the survey grid is gathered 3 samples, and single sample is 5 * 5 * 5cm;
The sample that collects is carried out thin slice observes, carry out alteration intensity Accurate Calibration,
Being replaced, when the alteration type is the hydromica alteration, accurately being judged as strong hydromica alteration by the alteration mineral greater than 50% percent by volume when rock forming mineral in the rock texture of sample;
When the percent by volume of rock forming mineral 20%～50% in the rock texture of sample is replaced, when the alteration type is the hydromica alteration, accurately is judged as medium hydromica alteration by the alteration mineral;
When the percent by volume of rock forming mineral in the rock texture of sample more than or equal to 5%, less than 20% replaced, when the alteration type is the hydromica alteration, accurately is judged as the weak hydromica alteration that waits by the alteration mineral;
Being replaced by the alteration mineral less than 5% percent by volume of rock forming mineral in the rock texture of sample accurately is judged as normal rock;
(4) alteration intensity contrast is analyzed and final deciding grade and level
When preliminary judgement when accurately judging that conclusion is consistent, finally judge conclusion and tentatively judge, accurately judgement is consistent;
When the conclusion of preliminary judgement is not strong hydromica alteration, accurately judges with preliminary when judging that conclusion is inconsistent, judge that finally conclusion is consistent with accurately judging;
When preliminary judgement conclusion is strong hydromica alteration, judge that finally conclusion is strong hydromica alteration;
(6) achievement map compilation
According to final judgement, the comprehensive charting of hydromica alteration is carried out in zone to be measured;
Adopt GIS software, final judgement conclusion is carried out the alteration numbering, strong hydromica alteration point is made as numeral 4, medium hydromica alteration is made as numeral 3, weak hydromica alteration is made as numeral 2, normal rock is made as numeral 1, observation point is projected on a certain GIS software with latitude and longitude coordinates or terrestrial coordinate, be numbered variable with alteration, drawing isoline figure, according to the Arcmap-Atcinfor-geostatistical Analyst module in the ARCGIS9.1 software, adopt inverse distance weighting interpolation method, finish the comprehensive charting of hydromica alteration.
Utilize the comprehensive charting of hydromica alteration to carry out the hot-liquid type Prospecting For Uranium.Find that known mineral deposit all is positioned at strong hydromica alteration area, indication hydromica alteration high field region is one of local area Prospecting For Uranium important symbol.The strong hydromica alteration area that has no mineral deposit, the distribution of ore deposit point in the comprehensive charting of hydromica alteration then is the key area of Prospecting For Uranium breakthrough in new district, only is distributed with the strong hydromica alteration area of ore deposit point, the ore deposit point can be developed into the mineral deposit by further work.
Embodiment three
Only be that with embodiment two differences zone to be measured is Huichang County, Jiangxi, Huichang County, Jiangxi is the grouan development area, and the total area is about 10,000 square kilometres; Select the survey grid laying that engineer's scale carried out in 1: 250000.
Embodiment four
Only be that with embodiment two differences zone to be measured is area, white poplar river, Xinjiang, area, white poplar river, Xinjiang is Search for Ore Deposits in Volcanic Areas, and the total area is about 5000 square kilometres; Select the survey grid laying that engineer's scale carried out in 1: 5000.
Claims (4)
1. comprehensive map plotting method of hydromica alteration may further comprise the steps successively:
(1) survey grid is laid
According to the requirement to Regional Alteration charting precision to be measured, zone to be measured is laid according to the survey grid that 1: 250000～1: 5000 engineer's scale carries out, represent the survey grid that the net spacing is 2.5km at 1: 250000, represent the survey grid that the net spacing is 50m at 1: 5000; In the survey grid survey line each other joint be observation point; Described zone to be measured is volcanics and/or grouan distributive province;
(2) alteration observation and alteration intensity are tentatively demarcated
Observation point on the survey grid is observed the rock in zone to be measured, gathers color, rock texture and the alteration type of regional rock to be measured;
Granular damouritization altered mineral all appears in rock forming mineral and stuff in green, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as strong hydromica alteration;
Granular damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and occurs planar damouritization altered mineral in the stuff, tentatively is judged as medium hydromica alteration;
The damouritization altered mineral appears in rock forming mineral in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and does not occur planar damouritization altered mineral in the stuff, tentatively is judged as the weak hydromica alteration that waits;
The damouritization altered mineral does not all appear in rock forming mineral and stuff in protolith true qualities, the rock texture when the color entire body of regional rock to be measured shows as, and tentatively is judged as normal rock;
(3) collected specimens and Accurate Calibration
Each observation point on the survey grid is gathered several samples;
The sample that collects is carried out thin slice observe, carry out alteration intensity Accurate Calibration;
Being replaced, when the alteration type is the hydromica alteration, accurately being judged as strong hydromica alteration by the alteration mineral greater than 50% percent by volume when rock forming mineral in the rock texture of sample;
When the percent by volume of rock forming mineral 20%～50% in the rock texture of sample is replaced, when the alteration type is the hydromica alteration, accurately is judged as medium hydromica alteration by the alteration mineral;
When the percent by volume of rock forming mineral in the rock texture of sample more than or equal to 5%, less than 20% replaced, when the alteration type is the hydromica alteration, accurately is judged as the weak hydromica alteration that waits by the alteration mineral;
Being replaced by the alteration mineral less than 5% percent by volume of rock forming mineral in the rock texture of sample accurately is judged as normal rock;
(4) alteration intensity contrast is analyzed and final deciding grade and level
When preliminary judgement when accurately judging that conclusion is consistent, finally judge conclusion and tentatively judge, accurately judgement is consistent;
When the conclusion of preliminary judgement is not strong hydromica alteration, accurately judges with preliminary when judging that conclusion is inconsistent, judge that finally conclusion is consistent with accurately judging;
When preliminary judgement conclusion is strong hydromica alteration, judge that finally conclusion is strong hydromica alteration;
(5) according to finally judging, the comprehensive charting of hydromica alteration is carried out in zone to be measured.
2. the comprehensive map plotting method of a kind of hydromica alteration according to claim 1 is characterized in that: when ore field or mineral deposit are predicted, select 1: 250000～1: 100000 engineer's scale, when ore body is predicted, selected 1: 100000～1: 5000.
3. the comprehensive map plotting method of a kind of hydromica alteration according to claim 1 is characterized in that: each observation point on the survey grid is gathered 3 samples, and single sample is of a size of 5 * 5 * 5cm.
4. the comprehensive map plotting method of a kind of hydromica alteration according to claim 1, it is characterized in that: adopt GIS software, final judgement conclusion is carried out the alteration numbering, strong hydromica alteration point is made as numeral 4, medium hydromica alteration is made as numeral 3, weak hydromica alteration is made as numeral 2, normal rock is made as numeral 1, and observation point is projected on the GIS software with latitude and longitude coordinates or terrestrial coordinate, is numbered variable with alteration, drawing isoline figure finally finishes hydromica alteration charting; Utilize the comprehensive charting of described hydromica alteration to carry out the hot-liquid type Prospecting For Uranium.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346038A (en) * | 2017-06-08 | 2017-11-14 | 昆明理工大学 | The method of " four step formulas " large scale coordinate detection deep hydrothermal deposit or ore body |
| 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 |
| CN110059434A (en) * | 2019-04-26 | 2019-07-26 | 中国地质大学（武汉） | The Visual Expression Method and system of a kind of uranium ore alteration type and intensity |
-
2011
- 2011-07-11 CN CN 201110192334 patent/CN102879329A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346038A (en) * | 2017-06-08 | 2017-11-14 | 昆明理工大学 | The method of " four step formulas " large scale coordinate detection deep hydrothermal deposit or ore body |
| CN107346038B (en) * | 2017-06-08 | 2019-02-19 | 昆明理工大学 | The method of " four step formulas " large scale coordinate detection deep hydrothermal deposit or ore body |
| 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 |
| CN109001422B (en) * | 2018-06-20 | 2019-10-01 | 华北水利水电大学 | A kind of geochemical discrimination method of granite choritization alteration extent |
| CN110059434A (en) * | 2019-04-26 | 2019-07-26 | 中国地质大学（武汉） | The Visual Expression Method and system of a kind of uranium ore alteration type and intensity |
| CN110059434B (en) * | 2019-04-26 | 2020-10-30 | 中国地质大学（武汉） | Visualized expression method and system for uranium ore alteration types and intensities |
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Application publication date: 20130116 |