Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA (original) (raw)

ⓘ Aegirine

Formula: NaFe3+Si2O6

ⓘ Albite

Formula: Na(AlSi3O8)

ⓘ 'Allanite Group'

Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

ⓘ Anatase

Formula: TiO2

ⓘ Anglesite

Formula: PbSO4

ⓘ 'Apatite'

Formula: Ca5(PO4)3(Cl/F/OH)

ⓘ Arfvedsonite

Formula: [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2

ⓘ Astrophyllite

Formula: K2NaFe2+7Ti2Si8O26(OH)4F

Localities: Reported from at least 7 localities in this region.

Habit: Blades to 15cm

Description: Purchased in April 2001 at "Spring Show of the Rockies" in Denver, Colorado, USA.

ⓘ Baryte

Formula: BaSO4

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Duffields Deposit, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Timberline Tunnel (Cather Springs Deposit; Claims: Timberline Nos. 1 and 2; MS 20026), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ 'Bastnäsite'

Formula: (Ce/Nd/Y/REE)(CO3)F

ⓘ Bastnäsite-(Ce)

Formula: Ce(CO3)F

ⓘ Bertrandite

Formula: Be4(Si2O7)(OH)2

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Beryl

Formula: Be3Al2(Si6O18)

ⓘ Calcjarlite

Formula: Na(Ca,Sr)3Al3(OH)2F14

ⓘ Cassiterite

Formula: SnO2

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Cerianite-(Ce)

Formula: (Ce4+,Th)O2

ⓘ Cerussite

Formula: PbCO3

ⓘ Chalcopyrite

Formula: CuFeS2

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Timberline Tunnel (Cather Springs Deposit; Claims: Timberline Nos. 1 and 2; MS 20026), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ 'Chlorite Group'

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Columbite-(Fe)

Formula: Fe2+Nb2O6

ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Blue Bird Mine, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Coronadite

Formula: Pb(Mn4+6Mn3+2)O16

ⓘ Cryolite

Formula: Na2NaAlF6

Localities: Reported from at least 7 localities in this region.

ⓘ Danalite

Formula: Be3Fe2+4(SiO4)3S

ⓘ Elpasolite (TL)

Formula: K2NaAlF6

Description: Occurs in solution cavities in massive pachnolite.

ⓘ Fayalite

Formula: Fe2+2SiO4

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ 'Fergusonite'

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Fluocerite-(Ce)

Formula: CeF3

ⓘ Fluorite

Formula: CaF2

Localities: Reported from at least 10 localities in this region.

ⓘ Fluorite var. Yttrofluorite

Formula: (Ca1-xYx)F2+x where 0.05 < x < 0.3

ⓘ Galena

Formula: PbS

Localities: Reported from at least 7 localities in this region.

ⓘ Gearksutite

Formula: Ca[Al(F,OH)5(H2O)]

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
30-4 pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Genthelvite (TL)

Formula: Be3Zn4(SiO4)3S

Localities:

West Cheyenne Canyon, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Unnamed pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

Description: 2 specimens known.

ⓘ Gibbsite

Formula: Al(OH)3

ⓘ Gold

Formula: Au

ⓘ Hematite

Formula: Fe2O3

ⓘ Hydrokenoralstonite

Formula: Na0.5(Al,Mg)2(F,OH)6 · H2O

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
30-4 pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Ilmenite

Formula: Fe2+TiO3

ⓘ Kaolinite

Formula: Al2(Si2O5)(OH)4

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Kasolite

Formula: Pb(UO2)(SiO4) · H2O

ⓘ 'K Feldspar'

ⓘ Laihunite

Formula: (Fe2+0.5◻0.5)Fe3+[SiO4]

ⓘ Löllingite

Formula: FeAs2

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

ⓘ Massicot

Formula: PbO

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 6 localities in this region.

ⓘ Microcline var. Amazonite

Formula: K(AlSi3O8)

ⓘ 'Microlite Group'

Formula: A2-mTa2X6-wZ-n

ⓘ Molybdenite

Formula: MoS2

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

ⓘ Murataite-(Y) (TL)

Formula: (Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4

Description: A pegmatite in the St. Peters Dome area, El Paso County, is the type locality for murataite, which occurs as 0.1- to 5-mm, black, submetallic grains or poorly developed crystals at the contact of astrophyllite and quartz.

ⓘ Nacrite

Formula: Al2(Si2O5)(OH)4

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Shaft, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Orthoclase

Formula: K(AlSi3O8)

ⓘ Pachnolite

Formula: NaCa[AlF6] · H2O

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Shaft, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
30-4 pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Plattnerite

Formula: PbO2

ⓘ 'Polylithionite-Trilithionite Series'

ⓘ Prosopite

Formula: CaAl2F4[(OH)4-xFx]

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
30-4 pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Pyrite

Formula: FeS2

ⓘ 'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
St Peters Dome Fluorite Prospect (Duffields; Leyte; Hughes Boss; Mattie B; Colorado; Cather Springs; Timberline), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Unnamed pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ 'Pyrochlore Group var. Plumbopyrochlore (of Skorobogatova et al.)'

Formula: A2Nb2(O,OH)6Z

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 12 localities in this region.

ⓘ Quartz var. Chalcedony

Formula: SiO2

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Shaft, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Quartz var. Smoky Quartz

Formula: SiO2

ⓘ Riebeckite

Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

Localities: Reported from at least 6 localities in this region.

Description: Arfvedsonite has been found to be riebeckite

ⓘ Rutile

Formula: TiO2

Localities: Reported from at least 8 localities in this region.

ⓘ Rutile var. Ilmenorutile

Formula: (Ti,Nb)O2

ⓘ Senaite

Formula: Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38

Description: Zinc rich. Mineral Y of Adams et al 1974

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 6 localities in this region.

ⓘ Thomsenolite

Formula: NaCa[AlF6] · H2O

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Shaft, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
30-4 pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Thorite

Formula: Th(SiO4)

Localities: Reported from at least 6 localities in this region.

Colour: maroon

Description: Grains to subhedral crystals frozen in pegmatite matrix.

ⓘ Titanite

Formula: CaTi(SiO4)O

ⓘ Topaz

Formula: Al2(SiO4)(F,OH)2

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ 'Tourmaline'

Formula: A D3G6 (T6O18)(BO3)3X3Z

ⓘ Uraninite

Formula: UO2

ⓘ Weberite

Formula: Na2Mg[AlF6]F

ⓘ 'Wolframite Group'

ⓘ Wulfenite

Formula: Pb(MoO4)

ⓘ Xenotime-(Y)

Formula: Y(PO4)

Localities:

St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Unnamed pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA

ⓘ Zircon

Formula: Zr(SiO4)

Localities: Reported from at least 7 localities in this region.

ⓘ Zircon var. Cyrtolite

Formula: Zr[(SiO4),(OH)4]

Localities:

Unnamed pegmatite, St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Cryolite Mine (65-2 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA