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Brooklyn Mine, Brown's Gulch, Red Mountain District, San Juan Co., Colorado, USAi
Regional Level Types
Brooklyn MineMine
Brown's GulchGulch
Red Mountain DistrictMining District
San Juan Co.County
ColoradoState
USACountry

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Key
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Latitude & Longitude (WGS84):
37° 51' 38'' North , 107° 42' 53'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Silverton637 (2011)7.0km
Ophir169 (2017)10.3km
Telluride2,399 (2018)12.1km
Mountain Village1,395 (2017)14.7km
Ouray1,008 (2017)18.4km


A gold mine located about 6 miles NW of Silverton. Started about 1900 and sporadic ever since. major workings consist of the Richardson gold stope, 1 level & 2 level.

Ref.:
- Rocks & Min.:63:286-287 & 64:144-145.
- Rosemeyer, T. (2002). "History, geology and mineralogy of the Brooklyn mine, San Juan County, Colorado." Rocks & Minerals, 77(3),pp:154-167.

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Rocks & Min.:63:286.
Altaite
Formula: PbTe
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Rocks & Min.:64:144-145.
Chalcopyrite
Formula: CuFeS2
Reference: Minerals of Colorado (1997) E.B. Eckel; 2008 New Mexico Mineral Symposium abstracts
Coloradoite
Formula: HgTe
Reference: Minerals of Colorado (1997) Eckel, E. B.
Cosalite
Formula: Pb2Bi2S5
Reference: Rocks & Min.:64:144-145.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Minerals of Colorado (1997) Eckel, E. B.
Galena
Formula: PbS
Reference: Minerals of Colorado (1997) Eckel, E. B.
Gersdorffite
Formula: NiAsS
Reference: Minerals of Colorado (1997) Eckel, E. B.
Gold
Formula: Au
Reference: Rocks & Min.:64:144-145.; 2008 New Mexico Mineral Symposium abstracts
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Minerals of Colorado (1997) E.B. Eckel
Mercury
Formula: Hg
Reference: Rocks & Min.:64:144-145.
'Monazite'
Reference: Rocks & Min.:64:144-145.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks & Min.:64:144-145.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks & Min.:64:144-145.
Petzite
Formula: Ag3AuTe2
Reference: Rocks & Min.:64:144-145.
Pyrite
Formula: FeS2
Reference: Rocks & Min.:63:286.; 2008 New Mexico Mineral Symposium abstracts
Pyrophyllite
Formula: Al2Si4O10(OH)2
Reference: Minerals of Colorado (1997) E.B. Eckel
Quartz
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Rhodochrosite
Formula: MnCO3
Reference: Rocks & Min.:64:144-145.; 2008 New Mexico Mineral Symposium abstracts
Sphalerite
Formula: ZnS
Reference: Rocks & Min.:64:144-145.; 2008 New Mexico Mineral Symposium abstracts
Tetradymite
Formula: Bi2Te2S
Reference: Rocks & Min.:64:144-145.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Mercury1.AD.05Hg
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Altaite2.CD.10PbTe
Chalcopyrite2.CB.10aCuFeS2
Coloradoite2.CB.05aHgTe
Cosalite2.JB.10Pb2Bi2S5
Galena2.CD.10PbS
Gersdorffite2.EB.25NiAsS
Petzite2.BA.75Ag3AuTe2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tetradymite2.DC.05Bi2Te2S
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Rhodochrosite5.AB.05MnCO3
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Pyrophyllite9.EC.10Al2Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Monazite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Mercury1.1.7.1Hg
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
Petzite2.4.3.3Ag3AuTe2
AmXp, with m:p = 1:1
Altaite2.8.1.3PbTe
Coloradoite2.8.2.5HgTe
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Tetradymite2.11.7.1Bi2Te2S
AmBnXp, with (m+n):p = 1:2
Gersdorffite2.12.3.2NiAsS
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
2.5 < ø < 3
Cosalite3.5.9.1Pb2Bi2S5
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Rhodochrosite14.1.1.4MnCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Pyrophyllite71.2.1.1Al2Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Kaolinite-Al2(Si2O5)(OH)4
'Monazite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H PyrophylliteAl2Si4O10(OH)2
H KaoliniteAl2(Si2O5)(OH)4
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C RhodochrositeMnCO3
OOxygen
O RhodochrositeMnCO3
O ApatiteCa5(PO4)3(Cl/F/OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O FluorapatiteCa5(PO4)3F
O QuartzSiO2
O PyrophylliteAl2Si4O10(OH)2
O KaoliniteAl2(Si2O5)(OH)4
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluorapatiteCa5(PO4)3F
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al PyrophylliteAl2Si4O10(OH)2
Al KaoliniteAl2(Si2O5)(OH)4
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si PyrophylliteAl2Si4O10(OH)2
Si KaoliniteAl2(Si2O5)(OH)4
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
SSulfur
S AcanthiteAg2S
S PyriteFeS2
S SphaleriteZnS
S CosalitePb2Bi2S5
S TetradymiteBi2Te2S
S GalenaPbS
S GersdorffiteNiAsS
S ChalcopyriteCuFeS2
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca FluorapatiteCa5(PO4)3F
MnManganese
Mn RhodochrositeMnCO3
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
NiNickel
Ni GersdorffiteNiAsS
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As GersdorffiteNiAsS
AgSilver
Ag AcanthiteAg2S
Ag PetziteAg3AuTe2
TeTellurium
Te PetziteAg3AuTe2
Te TetradymiteBi2Te2S
Te AltaitePbTe
Te ColoradoiteHgTe
AuGold
Au GoldAu
Au PetziteAg3AuTe2
HgMercury
Hg MercuryHg
Hg ColoradoiteHgTe
PbLead
Pb CosalitePb2Bi2S5
Pb AltaitePbTe
Pb GalenaPbS
BiBismuth
Bi CosalitePb2Bi2S5
Bi TetradymiteBi2Te2S

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

Miocene - Eocene
5.333 - 56 Ma



ID: 3190650
Cenozoic volcanic rocks

Age: Cenozoic (5.333 - 56 Ma)

Stratigraphic Name: San Juan Mountains

Comments: Southern Rocky Mountains

Lithology: Intermediate-felsic volcanic rocks

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]

Oligocene
23.03 - 33.9 Ma



ID: 2813930
Intra-ash flow andesitic lavas

Age: Oligocene (23.03 - 33.9 Ma)

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:{andesite}

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]

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


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