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Eureka tunnel (1-15 pegmatite), St Peters Dome, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USAi
Regional Level Types
Eureka tunnel (1-15 pegmatite)Tunnel
St Peters DomeDome
Cheyenne District (St. Peters Dome District)Mining District
El Paso Co.County
ColoradoState
USACountry

This page kindly sponsored by Carl (Bob) Carnein
Key
Latitude & Longitude (WGS84):
38° 45' 6'' North , 104° 54' 15'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Fort Carson13,813 (2011)10.1km
Stratmoor6,900 (2011)11.1km
Colorado Springs456,568 (2017)11.6km
Manitou Springs5,334 (2017)12.0km
Security-Widefield32,882 (2011)16.5km


Commodities (Major) - Fluorine-Fluorite; (Minor) - Zirconium
Development Status: Past Producer

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


18 valid minerals.

Detailed Mineral List:

Astrophyllite
Formula: K2NaFe2+7Ti2Si8O28(OH)4F
Reference: Paul J. Broyles
Bertrandite
Formula: Be4(Si2O7)(OH)2
Reference: Am Min 51:299-323
Cryolite
Formula: Na2NaAlF6
Reference: Am Min 51:299-323; American Mineralogist (1936): 20: 319-333
Elpasolite
Formula: K2NaAlF6
Reference: Am Min 51:299-323
Fluorite
Formula: CaF2
Reference: Minerals of Colorado (1997) Eckel, E. B.; American Mineralogist (1936): 20: 319-333
Gearksutite
Formula: Ca[Al(F,OH)5(H2O)]
Reference: Am Min 51:299-323
Hydrokenoralstonite
Formula: Na0.5(Al,Mg)2(F,OH)6•H2O
Reference: Am Min 51:299-323
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: American Mineralogist (1936): 20: 319-333
Microcline
Formula: K(AlSi3O8)
Reference: American Mineralogist (1936): 20: 319-333
Nacrite
Formula: Al2(Si2O5)(OH)4
Reference: Minerals of Colorado (1997) Eckel, E. B.
Pachnolite
Formula: NaCa[AlF6] · H2O
Reference: Minerals of Colorado (1997) Eckel, E. B.; Am Min 51:299-323; American Mineralogist (1936): 20: 319-333
Prosopite
Formula: CaAl2F4[(OH)4-xFx], x = 0.0–1.0
Reference: Minerals of Colorado (1997) Eckel, E. B.; Am Min 51:299-323; American Mineralogist (1936): 20: 319-333
Quartz
Formula: SiO2
Reference: American Mineralogist (1936): 20: 319-333
Quartz var: Chalcedony
Formula: SiO2
Reference: American Mineralogist (1936): 20: 319-333
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: American Mineralogist (1936): 20: 319-333
Rutile
Formula: TiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Thomsenolite
Formula: NaCa[AlF6] · H2O
Reference: Minerals of Colorado (1997) Eckel, E. B.; Am Min 51:299-323
Weberite
Formula: Na2Mg[AlF6]F
Reference: Minerals of Colorado (1997) Eckel, E. B.; Am Min 51:299-323
Zircon
Formula: Zr(SiO4)
Reference: Am Min 51:299-323

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Cryolite3.CB.15Na2NaAlF6
Elpasolite3.CB.15K2NaAlF6
Fluorite3.AB.25CaF2
Gearksutite3.CC.05Ca[Al(F,OH)5(H2O)]
Hydrokenoralstonite3.CF.05 Na0.5(Al,Mg)2(F,OH)6•H2O
Pachnolite3.CB.40NaCa[AlF6] · H2O
Prosopite3.CD.10CaAl2F4[(OH)4-xFx], x = 0.0–1.0
Thomsenolite3.CB.40NaCa[AlF6] · H2O
Weberite3.CB.25Na2Mg[AlF6]F
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Rutile4.DB.05TiO2
Group 9 - Silicates
Astrophyllite9.DC.05K2NaFe2+7Ti2Si8O28(OH)4F
Bertrandite9.BD.05Be4(Si2O7)(OH)2
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Nacrite9.ED.05Al2(Si2O5)(OH)4
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Zircon9.AD.30Zr(SiO4)

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 11 - HALIDE COMPLEXES
Aluminofluorides - Isolated Octahedra
Cryolite11.6.1.1Na2NaAlF6
Elpasolite11.6.2.1K2NaAlF6
Gearksutite11.6.8.1Ca[Al(F,OH)5(H2O)]
Hydrokenoralstonite11.6.12.1 Na0.5(Al,Mg)2(F,OH)6•H2O
Pachnolite11.6.5.1NaCa[AlF6] · H2O
Prosopite11.6.9.1CaAl2F4[(OH)4-xFx], x = 0.0–1.0
Thomsenolite11.6.6.1NaCa[AlF6] · H2O
Weberite11.6.13.1Na2Mg[AlF6]F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Bertrandite56.1.1.1Be4(Si2O7)(OH)2
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
Astrophyllite69.1.1.1K2NaFe2+7Ti2Si8O28(OH)4F
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.
Kaolinite-Al2(Si2O5)(OH)4
Nacrite-Al2(Si2O5)(OH)4
Quartz
var: Chalcedony
-SiO2
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

List of minerals for each chemical element

HHydrogen
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H ThomsenoliteNaCa[AlF6] · H2O
H PachnoliteNaCa[AlF6] · H2O
H ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
H NacriteAl2(Si2O5)(OH)4
H KaoliniteAl2(Si2O5)(OH)4
H Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
H GearksutiteCa[Al(F,OH)5(H2O)]
H BertranditeBe4(Si2O7)(OH)2
H AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
BeBeryllium
Be BertranditeBe4(Si2O7)(OH)2
OOxygen
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O QuartzSiO2
O MicroclineK(AlSi3O8)
O RutileTiO2
O ThomsenoliteNaCa[AlF6] · H2O
O PachnoliteNaCa[AlF6] · H2O
O ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
O NacriteAl2(Si2O5)(OH)4
O Quartz (var: Chalcedony)SiO2
O KaoliniteAl2(Si2O5)(OH)4
O Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
O GearksutiteCa[Al(F,OH)5(H2O)]
O BertranditeBe4(Si2O7)(OH)2
O ZirconZr(SiO4)
O AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
FFluorine
F WeberiteNa2Mg[AlF6]F
F ThomsenoliteNaCa[AlF6] · H2O
F PachnoliteNaCa[AlF6] · H2O
F FluoriteCaF2
F ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
F CryoliteNa2NaAlF6
F ElpasoliteK2NaAlF6
F Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
F GearksutiteCa[Al(F,OH)5(H2O)]
F AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
NaSodium
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na WeberiteNa2Mg[AlF6]F
Na ThomsenoliteNaCa[AlF6] · H2O
Na PachnoliteNaCa[AlF6] · H2O
Na CryoliteNa2NaAlF6
Na ElpasoliteK2NaAlF6
Na Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
Na AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
MgMagnesium
Mg WeberiteNa2Mg[AlF6]F
Mg Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
AlAluminium
Al MicroclineK(AlSi3O8)
Al WeberiteNa2Mg[AlF6]F
Al ThomsenoliteNaCa[AlF6] · H2O
Al PachnoliteNaCa[AlF6] · H2O
Al ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
Al NacriteAl2(Si2O5)(OH)4
Al KaoliniteAl2(Si2O5)(OH)4
Al CryoliteNa2NaAlF6
Al ElpasoliteK2NaAlF6
Al Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
Al GearksutiteCa[Al(F,OH)5(H2O)]
SiSilicon
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si NacriteAl2(Si2O5)(OH)4
Si Quartz (var: Chalcedony)SiO2
Si KaoliniteAl2(Si2O5)(OH)4
Si BertranditeBe4(Si2O7)(OH)2
Si ZirconZr(SiO4)
Si AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
KPotassium
K MicroclineK(AlSi3O8)
K ElpasoliteK2NaAlF6
K AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
CaCalcium
Ca ThomsenoliteNaCa[AlF6] · H2O
Ca PachnoliteNaCa[AlF6] · H2O
Ca FluoriteCaF2
Ca ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
Ca GearksutiteCa[Al(F,OH)5(H2O)]
TiTitanium
Ti RutileTiO2
Ti AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
FeIron
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe AstrophylliteK2NaFe72+Ti2Si8O28(OH)4F
ZrZirconium
Zr ZirconZr(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
American Mineralogist (1936): 20: 319-333.
PEARL, R.M., 1972, COLORADO GEM TRAILS AND MINERAL GUIDE: CHICAGO, SWALLOW PRESS, 222P.


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