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Burroughs Mine (Traut-Rudin-Anderson Pegmatite; Sunrise Peak Mine), Clear Creek pegmatite Province, Jefferson Co., Colorado, USA

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Latitude & Longitude (WGS84): 39° 40' 53'' North , 105° 19' 22'' West
Latitude & Longitude (decimal): 39.68139,-105.32278
GeoHash:G#: 9xj1erf2c
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


A feldspar mine located in the NE ¼ sec. 27, T. 4 S., R. 71 W. It is in Kerr Gulch, between Evergreen Parkway and the Bear Creek Road (state highway 74). At a point on the Kerr Gulch Road 2.1 mi south of Evergreen Parkway, walk up the hill (east) to a large open cut in a pegmatite dike.

[Note: possibly part of Swede - Kerr Gulches Pegmatites? (http://www.mindat.org/loc-114774.html)]

A pegmatite mine located in the SW¼ sec. 22, T.4S., R.71W.


Mineralization is several zoned outcrops. Core zone: quartz-mica; intermediate zone: microcline-quartz-cleavelandite-mica; wall zone: quartz-tourmaine-garnet.

Workings include a large open cut and 6 small pits.

Commodities (Major) - Mica, Feldspar, Beryllium; (Minor) - Niobium (Columbium), Tantalum; (Trace) - Lithium, Thorium, Uranium, REE, Bismuth
Development Status: Past Producer
Host Rock Unit: Idaho Springs Formation---Hornblende Gneiss And Amphibolite
Structure: Floyd Hill Fault Zone, Front Range Uplift, Denver Basin
Host Rock: Gneiss
Tectonic Structure: Central Cordillera (Southern Rocky Mtns)

Regions containing this locality

Rocky Mountains, North America

Mountain Range - 2,039 mineral species & varietal names listed

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


19 valid minerals. 1 erroneous literature entry.

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:

Albite
Formula: Na(AlSi3O8)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Beryl
Formula: Be3Al2(Si6O18)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Biotite'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Bismuthinite
Formula: Bi2S3
Reference: Minerals of Colorado (1997) Eckel, E. B.
Bismutite
Formula: (BiO)2CO3
Reference: Minerals of Colorado (1997) Eckel, E. B.
Columbite-(Fe)
Formula: FeNb2O6
Reference: Buckskin Minerals
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Cryolite
Formula: Na2NaAlF6
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Feldspar'
Reference: From USGS MRDS database
'Gadolinite'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Gneiss'
Reference: From USGS MRDS database
Lithiophilite
Formula: LiMn2+PO4
Reference: Minerals of Colorado (1997) E.B. Eckel
'commodity:Mica'
Reference: From USGS MRDS database
Microcline
Formula: K(AlSi3O8)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; USGS Prof. Paper 227
Microlite Group
Formula: A2-mTa2X6-wZ-n
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Rudy Bolona
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Niobium (Columbium)'
Formula: Nb
Reference: From USGS MRDS database
Pyrochlore Group
Formula: A2Nb2(O,OH)6Z
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Quartz
Formula: SiO2
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).; USGS Prof. Paper 227
Quartz var: Rose Quartz
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Tantalite' ?
Formula: (Mn,Fe)(Ta,Nb)2O6
Description: No data. Typical geologist's nomenclature.
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'commodity:Tantalum'
Formula: Ta
Reference: From USGS MRDS database
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Triphylite
Formula: LiFe2+PO4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; USGS Prof. Paper 227
Xenotime-(Y)
Formula: Y(PO4)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Zircon
Formula: Zr(SiO4)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Bismuthinite'2.DB.05Bi2S3
Group 3 - Halides
Cryolite ?3.CB.15Na2NaAlF6
Group 4 - Oxides and Hydroxides
Columbite-(Fe)4.DB.35FeNb2O6
Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Microlite Group4.00.A2-mTa2X6-wZ-n
Pyrochlore Group4.00.A2Nb2(O,OH)6Z
Quartz4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
Samarskite-(Y)4.DB.25(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Group 5 - Nitrates and Carbonates
'Bismutite'5.BE.25(BiO)2CO3
Group 8 - Phosphates, Arsenates and Vanadates
Lithiophilite8.AB.10LiMn2+PO4
Monazite-(Ce)8.AD.50Ce(PO4)
Triphylite8.AB.10LiFe2+PO4
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
'Allanite-(Ce)'9.BG.05b{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
'Beryl'9.CJ.05Be3Al2(Si6O18)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Topaz9.AF.35Al2(SiO4)(F,OH)2
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Biotite'-
Columbite-(Fe)-Columbite-(Mn) Series-
Gadolinite-
Garnet Group-X3Z2(SiO4)3
Gneiss-
Tantalite ?-(Mn,Fe)(Ta,Nb)2O6
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Samarskite-(Y)8.1.11.1(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
A2B2O6(O,OH,F)
Microlite Group8.2.2.1A2-mTa2X6-wZ-n
Pyrochlore Group8.2.1.1A2Nb2(O,OH)6Z
AB2O6
Columbite-(Fe)8.3.2.2FeNb2O6
Euxenite-(Y)8.3.8.2(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Group 11 - HALIDE COMPLEXES
Aluminofluorides - Isolated Octahedra
Cryolite ?11.6.1.1Na2NaAlF6
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
ABXO4
Lithiophilite38.1.1.2LiMn2+PO4
Triphylite38.1.1.1LiFe2+PO4
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Allanite-(Ce)58.2.1a.1{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
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
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
'Biotite'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Gadolinite'-
'Garnet Group'-X3Z2(SiO4)3
'Gneiss'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Rose Quartz
-SiO2
'Tantalite' ?-(Mn,Fe)(Ta,Nb)2O6
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Pyrochlore GroupA2Nb2(O,OH)6Z
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H TopazAl2(SiO4)(F,OH)2
LiLithium
Li LithiophiliteLiMn2+PO4
Li TriphyliteLiFe2+PO4
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C Bismutite(BiO)2CO3
OOxygen
O AlbiteNa(AlSi3O8)
O Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
O BerylBe3Al2(Si6O18)
O Bismutite(BiO)2CO3
O Albite (var: Cleavelandite)Na(AlSi3O8)
O Columbite-(Fe)FeNb2O6
O Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
O Garnet GroupX3Z2(SiO4)3
O LithiophiliteLiMn2+PO4
O MicroclineK(AlSi3O8)
O Monazite-(Ce)Ce(PO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Pyrochlore GroupA2Nb2(O,OH)6Z
O QuartzSiO2
O Quartz (var: Rose Quartz)SiO2
O Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Tantalite(Mn,Fe)(Ta,Nb)2O6
O TopazAl2(SiO4)(F,OH)2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O TriphyliteLiFe2+PO4
O Xenotime-(Y)Y(PO4)
O ZirconZr(SiO4)
FFluorine
F CryoliteNa2NaAlF6
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na CryoliteNa2NaAlF6
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Al BerylBe3Al2(Si6O18)
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al CryoliteNa2NaAlF6
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al TopazAl2(SiO4)(F,OH)2
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Si BerylBe3Al2(Si6O18)
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si Garnet GroupX3Z2(SiO4)3
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Quartz (var: Rose Quartz)SiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si TopazAl2(SiO4)(F,OH)2
Si ZirconZr(SiO4)
PPhosphorus
P LithiophiliteLiMn2+PO4
P Monazite-(Ce)Ce(PO4)
P TriphyliteLiFe2+PO4
P Xenotime-(Y)Y(PO4)
SSulfur
S BismuthiniteBi2S3
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ca Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ca Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
TiTitanium
Ti Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
MnManganese
Mn LithiophiliteLiMn2+PO4
Mn Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Fe Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Fe Columbite-(Fe)FeNb2O6
Fe Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Fe Tantalite(Mn,Fe)(Ta,Nb)2O6
Fe TriphyliteLiFe2+PO4
YYttrium
Y Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Y Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Columbite-(Fe)FeNb2O6
Nb Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
Nb Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Nb Tantalite(Mn,Fe)(Ta,Nb)2O6
CeCerium
Ce Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ce Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ce Monazite-(Ce)Ce(PO4)
TaTantalum
Ta Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ta Microlite GroupA2-mTa2X6-wZ-n
Ta Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Ta Tantalite(Mn,Fe)(Ta,Nb)2O6
BiBismuth
Bi BismuthiniteBi2S3
Bi Bismutite(BiO)2CO3
ThThorium
Th Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Th Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
UUranium
U Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
U Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8

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: 2443529
Amphibolite, hornblendite, and related rocks

Age: Proterozoic (1600 - 2500 Ma)

Description: Dark-colored rocks composed mainly of hornblende, quartz, plagioclase, biotite, and clinopyroxene in varying amounts. Commonly consists of interlayered hornblende gneiss, amphibolite, and other gneisses, including calc-silicate gneiss. Amounts of amphibolite and hornblende in unit not uniform but always sufficient to give an unusually dark appearance.

Reference: Trimble, D.E., M.N. Machette. Geologic Map of the Greater Denver Area, Front Range Urban Corridor, Colorado. U.S. Geological Survey Geologic Investigations Series I-856-H. [64]

Paleoproterozoic
1600 - 2500 Ma



ID: 2957947
Biotitic gneiss, schist, and migmatite

Age: Proterozoic (1600 - 2500 Ma)

Description: Locally contains minor hornblende gneiss, calc-silicate rock, quartzite, and marble. Derived principally from sedimentary 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:{biotite gneiss,schist,migmatite}, Minor:{gneiss,calc silicate schist,marble}

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: 2209532
Hornblende gneiss and clac-silicate gneiss

Age: Proterozoic (1600 - 2500 Ma)

Description: Interlayered hornblende-plagioclase gneiss and amphibolite (Xh), with lesser amounts of interlayered, commonly lensoidal or pod-shaped bodies of calc-silicate gneiss (Xc). Mapped widely in Ralston Buttes, Squaw Pass, and Evergreen 7.5-minute quadrangles (Sheridan and others, 1972; Sheridan and Marsh, 1976; Sheridan and others, 1967) and in northwest corner of quadrangle (Eppinger and others, 1984)

Reference: Kellogg, K.S., Shroba, R.R., Bryant, Bruce, and Premo, W.R. Geologic Map of the Denver West 30' x 60' Quadrangle, North- Central Colorado. USGS Geologic Investigations Series 3000. [35]

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)
- Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
- Eckel, Edwin B. (1997), Minerals of Colorado, updated & revised: 18.
- HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 84
- OLSON, J.C., AND ADAMS, J.W., 1962, THORIUM AND RARE EARTHS IN THE UNITED STATES: USGS MAP MR-28


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