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Schaaf prospect, Cotopaxi Pegmatite area, Cotopaxi, Cotopaxi District, Fremont Co., Colorado, USAi
Regional Level Types
Schaaf prospectProspect
Cotopaxi Pegmatite areaArea
Cotopaxi- not defined -
Cotopaxi DistrictMining District
Fremont Co.County
ColoradoState
USACountry

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Latitude & Longitude (WGS84): 38° 28' 27'' North , 105° 45' 46'' West
Latitude & Longitude (decimal): 38.47417,-105.76278
GeoHash:G#: 9wufck1bk
Locality type:Prospect
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Howard723 (2011)6.9km
Coaldale255 (2011)12.1km
Salida5,467 (2017)21.6km
Smeltertown120 (2011)23.4km
Poncha Springs777 (2017)27.7km


Commodities (Major) - Feldspar, Mica
Development Status: Occurrence
Host Rock: Granite

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Biotite'
Reference: USGS Prof. Paper 227
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: USGS Prof. Paper 227
'K Feldspar'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Microcline
Formula: K(AlSi3O8)
Reference: USGS Prof. Paper 227
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: USGS Prof. Paper 227
Quartz
Formula: SiO2
Reference: USGS Prof. Paper 227

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Biotite'-
'K Feldspar'-

List of minerals arranged by Dana 8th Edition classification

Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Biotite'-
'K Feldspar'-
Kaolinite-Al2(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H KaoliniteAl2(Si2O5)(OH)4
OOxygen
O QuartzSiO2
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O KaoliniteAl2(Si2O5)(OH)4
AlAluminium
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si KaoliniteAl2(Si2O5)(OH)4
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleoproterozoic
1600 - 2500 Ma



ID: 2827802
Felsic and hornblendic gneisses, either separate or interlayered

Age: Proterozoic (1600 - 2500 Ma)

Description: Includes metabasalt, metatuff, and interbedded metagraywacke; locally contains interlayered biotite gneiss. Derived principally from volcanic rocks

Comments: Original map source: Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-0507, 9 p., scale 1:500,000.

Lithology: Major:{gneiss}, Minor:{metabasalt,metagraywacke}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186950
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hanley, J.B., Heinrich, E.W., and Page, L.R. (1950), Pegmatite investigations in Colorado, Wyoming, and Utah 1942-1944, A report on resources of beryllium, tantalum, and lithium minerals and of muscovite, USGS Professional Paper 227, 125 pp.: 62.
Conservation Division completion date, 1-64.


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