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Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USAi
Regional Level Types
Brown Derby MineMine
Quartz Creek Pegmatite DistrictMining District
Gunnison Co.County
ColoradoState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84):
38° 32' 30'' North , 106° 37' 32'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Gunnison6,076 (2018)26.1km
Maysville135 (2011)37.8km
Crested Butte1,579 (2017)48.1km
Mount Crested Butte801 (2012)49.8km


A REE (microlite)-Li-Be mine on 2 claims located in the NW¼ NE¼ sec 3, .49N., R.R.3E. New Mexico principal meridian), near Ohio City.
Mineralization is a series of 15 zoned pegmatite dikes (3 detailed), in metadiorite.
Workings include 16 pits, 2 inclines and 2 tunnels.

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 from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

26 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.; USGS Prof. Paper 227
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.; Rocks & Min.: 24:233-234; 71(3):193.; American Mineralogist (1936): 20: 319-333; USGS Prof. Paper 227
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Hanley, J. B, Heinrich, E. W., ans Page, L., 1950, Pegmatite Investigations in Colorado, Wyoming, and Ytah, 1942-1944, US Geological Survey Professional Paper 227. pp 125.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Rocks & Min. Vol.71, No.3, p.193
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: 26 (Table A-1).; American Mineralogist (1936): 20: 319-333; USGS Prof. Paper 227
Beryl var: Alkali-beryl
Formula: Be3Al2(Si6O18)
Reference: Rocks & Min. Vol.71, No.3, p.193
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Reference: American Mineralogist (1936): 20: 319-333
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Reference: Rocks & Min.: 24:233-234.; American Mineralogist (1936): 20: 319-333
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Rocks & Min.: 24:233-234.; USGS Prof. Paper 227
Columbite-(Fe)
Formula: Fe2+Nb2O6
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1); Rocks & Min.: 24:233-234.
'Columbite-(Fe)-Columbite-(Mn) Series'
Columbite-(Mn)
Formula: Mn2+Nb2O6
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Columbite-Tantalite'
Reference: USGS Proffesional Paper 265
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1); Rocks & Min. Vol.71, No.3, p.193; Am Min 50:96-104; Mineralogical Magazine 1963 33 : 458-466; American Mineralogist (1936): 20: 319-333
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
'Feldspar Group'
'Feldspar Group var: Perthite'
Fergusonite-(Y)
Formula: YNbO4
Reference: Miller, 1957
Fluorite
Formula: CaF2
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.; Am Min 50:96-104; USGS Prof. Paper 227
Gahnite
Formula: ZnAl2O4
Reference: Pearl, 1958. Colorado Gem Trails & Mineral Guide, p.61.; Am Min 50:96-104; USGS Prof. Paper 227
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Pearl, 1958. Colorado Gem Trails & Mineral Guide, p.61.; USGS Prof. Paper 227
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Van King
'K Feldspar'
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.
'Lepidolite'
Description: Purchased in April 2001 at "Spring Show of the Rockies" in Denver, Colorado, USA.
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1); Rocks & Min.: 24:233-234.; Mineralogical Magazine 1963 33 : 458-466; American Mineralogist (1936): 20: 319-333; USGS Prof. Paper 227
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Am Min 50:96-104
'Manganese Oxides'
Reference: Bob Cobban
Microcline
Formula: K(AlSi3O8)
Reference: Rocks & Min.: 24:233-234.; American Mineralogist (1936): 20: 319-333; 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: 26 (Table A-1); Rocks & Min.: 24:233-234; 71(3):193.; Am Min 50:96-104; Mineralogical Magazine 1963 33 : 458-466; USGS Prof. Paper 227
'Monazite'
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1); Pearl, 1958. Colorado Gem Trails & Mineral Guide, p.61.; USGS Prof. Paper 227
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Minerals of Colorado (1997) Eckel, E. B.
Monazite-(Sm)
Formula: Sm(PO4)
Reference: Collected by Rudy Bolona; confirmed analysis by George B. Morgan University of Oklahoma, Oct. 2009.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.; Am Min 50:96-104; USGS Prof. Paper 227
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bull. Minéral. , 1984, 107, pp. 369-384.
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Reference: Rocks & Min. Vol.71, No.3, p.193
Polylithionite ?
Formula: KLi2Al(Si4O10)(F,OH)2
Description: Identification made by comparison of old optical data with new mica nomenclature previous to its publication. No chemical data known to verify this listing. Raman may not be able to differentiated between lepidolite and polylithionite.
Reference: Cobban, R., et a., 1997, Mineralogy of Colorado.
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Reference: Minerals of Colorado (1997) E.B. Eckel
'Pyrochlore Supergroup' ?
Formula: A2-mD2X6-wZ1-n
'Pyrochlore Supergroup var: Betafite (of Hogarth 1977)' ?
Formula: A2-mD2X6-wZ1+w
Quartz
Formula: SiO2
Reference: Rocks & Min. Vol.71, No.3, p.193; American Mineralogist (1936): 20: 319-333; USGS Prof. Paper 227
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Bob Cobban
Rynersonite
Formula: CaTa2O6
Reference: Rocks & Min. Vol.71, No.3, p.193
Samarskite-(Y)
Formula: YFe3+Nb2O8
Reference: Rocks & Min.: 24:233-234.; American Mineralogist (1936): 20: 319-333
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Minerals of Colorado (1997) E.B. Eckel
'Stibiconite'
Formula: Sb3+Sb5+2O6(OH)
Reference: Minerals of Colorado (1997) E.B. Eckel
Stibiotantalite
Formula: Sb(Ta,Nb)O4
Reference: Rocks & Min. Vol.71, No.3, p.193; Mineralogical Magazine 1963 33 : 458-466
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Reference: Ref.: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1).
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Rocks & Min.: 24:233-234; 71(3):193.; Am Min 50:96-104; American Mineralogist (1936): 20: 319-333; USGS Prof. Paper 227
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
'Tourmaline var: Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rocks & Min.: 24:233-234.
'Tourmaline var: Verdelite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rocks & Min.: 24:233-234.
Trilithionite
Formula: K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Reference: University of Arizona Mineral Museum 5528
'Uranpyrochlore (of Hogarth 1977)'
Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Reference: Minerals of Colorado (1997) E.B. Eckel
Wodginite ?
Formula: Mn2+Sn4+Ta2O8
Reference: Bob Cobban
'Zinnwaldite'

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Columbite-(Mn)4.DB.35Mn2+Nb2O6
Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Gahnite4.BB.05ZnAl2O4
Magnetite4.BB.05Fe2+Fe3+2O4
'Microlite Group'4.00.A2-mTa2X6-wZ-n
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rynersonite4.DF.05CaTa2O6
Samarskite-(Y)4.DB.25YFe3+Nb2O8
'Stibiconite'4.DH.20Sb3+Sb5+2O6(OH)
Stibiotantalite4.DE.30Sb(Ta,Nb)O4
'Uranpyrochlore (of Hogarth 1977)'4.DH.15(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Wodginite ?4.DB.40Mn2+Sn4+Ta2O8
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Fergusonite-(Y)7.GA.05YNbO4
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Monazite-(Sm)8.AD.50Sm(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Almandine9.AD.25Fe2+3Al2(SiO4)3
Beryl9.CJ.05Be3Al2(Si6O18)
var: Alkali-beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
var: Morganite9.CJ.05Be3Al2(Si6O18)
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Pollucite9.GB.05(Cs,Na)2(Al2Si4O12) · 2H2O
Polylithionite ?9.EC.20KLi2Al(Si4O10)(F,OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Topaz9.AF.35Al2(SiO4)(F,OH)2
Trilithionite9.EC.20K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Columbite-Tantalite'-
'Feldspar Group'-
'var: Perthite'-
'Garnet Group'-X3Z2(SiO4)3
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Lepidolite'-
'Manganese Oxides'-
'Monazite'-
'Pyrochlore Supergroup' ?-A2-mD2X6-wZ1-n
'var: Betafite (of Hogarth 1977)' ?-A2-mD2X6-wZ1+w
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Verdelite'-A(D3)G6(T6O18)(BO3)3X3Z
'Zinnwaldite'-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Gahnite7.2.1.4ZnAl2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Fergusonite-(Y)8.1.1.1YNbO4
Samarskite-(Y)8.1.11.1YFe3+Nb2O8
Stibiotantalite8.1.6.2Sb(Ta,Nb)O4
Wodginite ?8.1.8.1Mn2+Sn4+Ta2O8
A2B2O6(O,OH,F)
'Microlite Group'8.2.2.1A2-mTa2X6-wZ-n
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
'Pyrochlore Supergroup
var: Betafite (of Hogarth 1977)' ?
8.2.3.1A2-mD2X6-wZ1+w
'Uranpyrochlore (of Hogarth 1977)'8.2.1.7(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
AB2O6
Columbite-(Fe)8.3.2.2Fe2+Nb2O6
Columbite-(Mn)8.3.2.4Mn2+Nb2O6
Euxenite-(Y)8.3.8.2(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Rynersonite8.3.7.2CaTa2O6
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 44 - ANTIMONATES
A2X2O6(O,OH,F)
'Stibiconite'44.1.1.1Sb3+Sb5+2O6(OH)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
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 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Polylithionite ?71.2.2b.8KLi2Al(Si4O10)(F,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)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Pollucite77.1.1.2(Cs,Na)2(Al2Si4O12) · 2H2O
Unclassified Minerals, Mixtures, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Beryl
var: Alkali-beryl
-Be3Al2(Si6O18)
var: Aquamarine-Be3Al2Si6O18
var: Morganite-Be3Al2(Si6O18)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Columbite-Tantalite'-
'Feldspar Group'-
'var: Perthite'-
'Garnet Group'-X3Z2(SiO4)3
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Lepidolite'-
'Manganese Oxides'-
'Monazite'-
Monazite-(Sm)-Sm(PO4)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Pyrochlore Supergroup' ?-A2-mD2X6-wZ1-n
Quartz
var: Smoky Quartz
-SiO2
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Verdelite'-A(D3)G6(T6O18)(BO3)3X3Z
Trilithionite-K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
'Zinnwaldite'-

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H TopazAl2(SiO4)(F,OH)2
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H ApatiteCa5(PO4)3(Cl/F/OH)
H Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Pyrochlore GroupA2Nb2(O,OH)6Z
H StibiconiteSb3+Sb25+O6(OH)
H Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Li TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Li PolylithioniteKLi2Al(Si4O10)(F,OH)2
BeBeryllium
Be Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Be Beryl (var: Morganite)Be3Al2(Si6O18)
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
B Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
OOxygen
O MuscoviteKAl2(AlSi3O10)(OH)2
O MicroclineK(AlSi3O8)
O StibiotantaliteSb(Ta,Nb)O4
O TopazAl2(SiO4)(F,OH)2
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O ApatiteCa5(PO4)3(Cl/F/OH)
O Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
O RynersoniteCaTa2O6
O Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
O QuartzSiO2
O Beryl (var: Morganite)Be3Al2(Si6O18)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
O Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
O Columbite-(Fe)Fe2+Nb2O6
O Samarskite-(Y)YFe3+Nb2O8
O GahniteZnAl2O4
O Garnet GroupX3Z2(SiO4)3
O BerylBe3Al2(Si6O18)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O Tantalite(Mn,Fe)(Ta,Nb)2O6
O K Feldspar (var: Adularia)KAlSi3O8
O AlbiteNa(AlSi3O8)
O Albite (var: Cleavelandite)Na(AlSi3O8)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Columbite-(Mn)Mn2+Nb2O6
O Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Monazite-(Ce)Ce(PO4)
O IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
O TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
O Pyrochlore GroupA2Nb2(O,OH)6Z
O SpessartineMn32+Al2(SiO4)3
O StibiconiteSb3+Sb25+O6(OH)
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
O MagnetiteFe2+Fe23+O4
O Monazite-(Sm)Sm(PO4)
O AlmandineFe32+Al2(SiO4)3
O Fergusonite-(Y)YNbO4
O Quartz (var: Smoky Quartz)SiO2
O WodginiteMn2+Sn4+Ta2O8
O PolylithioniteKLi2Al(Si4O10)(F,OH)2
FFluorine
F FluoriteCaF2
F TopazAl2(SiO4)(F,OH)2
F ApatiteCa5(PO4)3(Cl/F/OH)
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
F Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
F PolylithioniteKLi2Al(Si4O10)(F,OH)2
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Na AlbiteNa(AlSi3O8)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
Al TopazAl2(SiO4)(F,OH)2
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Al Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Al Beryl (var: Morganite)Be3Al2(Si6O18)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al GahniteZnAl2O4
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al K Feldspar (var: Adularia)KAlSi3O8
Al AlbiteNa(AlSi3O8)
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Al SpessartineMn32+Al2(SiO4)3
Al AlmandineFe32+Al2(SiO4)3
Al PolylithioniteKLi2Al(Si4O10)(F,OH)2
SiSilicon
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si TopazAl2(SiO4)(F,OH)2
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Si Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Si QuartzSiO2
Si Beryl (var: Morganite)Be3Al2(Si6O18)
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Garnet GroupX3Z2(SiO4)3
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si K Feldspar (var: Adularia)KAlSi3O8
Si AlbiteNa(AlSi3O8)
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Si SpessartineMn32+Al2(SiO4)3
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si AlmandineFe32+Al2(SiO4)3
Si Quartz (var: Smoky Quartz)SiO2
Si PolylithioniteKLi2Al(Si4O10)(F,OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P Monazite-(Ce)Ce(PO4)
P Monazite-(Sm)Sm(PO4)
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K K Feldspar (var: Adularia)KAlSi3O8
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
K PolylithioniteKLi2Al(Si4O10)(F,OH)2
CaCalcium
Ca FluoriteCaF2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca RynersoniteCaTa2O6
Ca Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ca Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
TiTitanium
Ti Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ti Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
MnManganese
Mn Tantalite(Mn,Fe)(Ta,Nb)2O6
Mn Columbite-(Mn)Mn2+Nb2O6
Mn SpessartineMn32+Al2(SiO4)3
Mn WodginiteMn2+Sn4+Ta2O8
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Columbite-(Fe)Fe2+Nb2O6
Fe Samarskite-(Y)YFe3+Nb2O8
Fe Tantalite(Mn,Fe)(Ta,Nb)2O6
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe MagnetiteFe2+Fe23+O4
Fe AlmandineFe32+Al2(SiO4)3
ZnZinc
Zn GahniteZnAl2O4
YYttrium
Y Samarskite-(Y)YFe3+Nb2O8
Y Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Y Fergusonite-(Y)YNbO4
NbNiobium
Nb Columbite-(Fe)Fe2+Nb2O6
Nb Samarskite-(Y)YFe3+Nb2O8
Nb Tantalite(Mn,Fe)(Ta,Nb)2O6
Nb Columbite-(Mn)Mn2+Nb2O6
Nb Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
Nb Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Nb Fergusonite-(Y)YNbO4
SnTin
Sn WodginiteMn2+Sn4+Ta2O8
SbAntimony
Sb StibiotantaliteSb(Ta,Nb)O4
Sb StibiconiteSb3+Sb25+O6(OH)
CsCaesium
Cs Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
CeCerium
Ce Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ce Monazite-(Ce)Ce(PO4)
Ce Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
SmSamarium
Sm Monazite-(Sm)Sm(PO4)
TaTantalum
Ta StibiotantaliteSb(Ta,Nb)O4
Ta Microlite GroupA2-mTa2X6-wZ-n
Ta RynersoniteCaTa2O6
Ta Tantalite(Mn,Fe)(Ta,Nb)2O6
Ta Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ta Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Ta WodginiteMn2+Sn4+Ta2O8
ThThorium
Th Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
U Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
U Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)

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: 2855885
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: 3192520
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)
Rocks & Minerals: 24:233-234; 71(3):193.
Pearl, 1958 Colorado Gem Trails & Mineral Guide, pp 59-61.
Oregon Mineralogist 2:23.
American Mineralogist 20:333.
Meeves, H., et al. (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 26 (Table A-1).

Localities in this Region
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