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Pikes Peak, El Paso Co., Colorado, USA
Detailed Mineral List:
| Albite | ||
| Formula: | NaAlSi3O8 | |
| Reference: | MinRec 16:217-230 | |
| Albite var: Cleavelandite | ||
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| 'Allanite' | ||
| Reference: | MinRec 16:217-230 | |
| Annite | ||
| Formula: | KFe2+3(AlSi3O10)(OH)2 | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| 'Apatite var: Carbonate-rich Apatite' | ||
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Aragonite | ||
| Formula: | CaCO3 | |
| Reference: | MinRec 16:217-230 | |
| Barylite | ||
| Formula: | Be2Ba(Si2O7) | |
| Reference: | MinRec 16:217-230 | |
| Baryte | ||
| Formula: | BaSO4 | |
| Reference: | MinRec 16:217-230 | |
| 'Bastnäsite' |  | |
| Reference: | MinRec 16:217-230 | |
| Photo: © . Bastnäsite from Pikes Peak, El Paso Co., Colorado, USA | ||
| Bertrandite | ||
| Formula: | Be4(Si2O7)(OH)2 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Beryl | ||
| Formula: | Be3Al2(Si6O18) | |
| Reference: | MinRec 16:217-230 | |
| Biotite | ||
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Calcite | ||
| Formula: | CaCO3 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Cassiterite | ||
| Formula: | SnO2 | |
| Reference: | MinRec 16:217-230 | |
| Chamosite | ||
| Formula: | (Fe2+,Mg)5Al(AlSi3O10)(OH)8 | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| 'Chevkinite' | ||
| Formula: | (Ca,Ce,Th)4(Fe,Mn)2(Ti,Fe)3Si4O22 | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| 'Chlorite Group' | ||
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Clinochlore | ||
| Formula: | (Mg,Fe2+)5Al(AlSi3O10)(OH)8 | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Columbite-(Fe) | ||
| Formula: | FeNb2O6 | |
| Reference: | MinRec 16:217-230 | |
| Elbaite | ||
| Formula: | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) | |
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| Epidote | ||
| Formula: | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Fluorapatite | ||
| Formula: | Ca5(PO4)3F | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Fluorite |  | |
| Formula: | CaF2 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Photo: © Martin Gruell. Fluorite from Pikes Peak, El Paso Co., Colorado, USA | ||
| Goethite |  | |
| Formula: | α-Fe3+O(OH) | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Photo: © 2002 John H. Betts. Goethite from Goethite Hill, Pikes Peak, El Paso Co., Colorado, USA | ||
| Hematite | ||
| Formula: | Fe2O3 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Illite | ||
| Formula: | K0.65Al2.0[ ][Al0.65Si3.35O10](OH)2 | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Ilmenite | ||
| Formula: | Fe2+TiO3 | |
| Reference: | MinRec 16:217-230 | |
| Kaolinite | ||
| Formula: | Al2(Si2O5)(OH)4 | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Limonite | ||
| Formula: | FeO(OH) · nH2O | |
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| Microcline |  | |
| Formula: | KAlSi3O8 | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Photo: © 2002 John H. Betts. Microcline from Pikes Peak, El Paso Co., Colorado, USA | ||
| Microcline var: Amazonite |  | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Photo: © Rob Lavinsky. Amazonite from Pikes Peak, El Paso Co., Colorado, USA | ||
| Microlite Group | ||
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| 'Monazite' | ||
| Reference: | MinRec 16:217-230 | |
| Montmorillonite | ||
| Formula: | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Muscovite | ||
| Formula: | KAl2(AlSi3O10)(OH)2 | |
| Reference: | MinRec 16:217-230 | |
| Muscovite var: Sericite | ||
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Orthoclase |  | |
| Formula: | KAlSi3O8 | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| Photo: © 2002 John H. Betts. Orthoclase from Pikes Peak, El Paso Co., Colorado, USA | ||
| Phenakite | ||
| Formula: | Be2SiO4 | |
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| Phlogopite var: Ferroan Phlogopite | ||
| Formula: | K(Mg,Fe2+)3AlSi3O10(F,OH)2 | |
| Reference: | AmMin 85:1275-1286 (2000) | |
| Polylithionite | ||
| Formula: | KLi2Al(Si4O10)(F,OH)2 | |
| Reference: | AmMin 85:1275-1286 (2000) | |
| Pyrite | ||
| Formula: | FeS2 | |
| Reference: | MinRec 16:217-230 | |
| Pyrochlore Group | ||
| Formula: | A2Nb2(O,OH)6Z | |
| Reference: | [MinRec 16:228] | |
| Pyrrhotite | ||
| Formula: | Fe1-xS (x = 0 to 0.17) | |
| Locality: | Windy Point Granite, Pikes Peak, El Paso Co., Colorado, USA | |
| Quartz |  | |
| Formula: | SiO2 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 3 other localities in this region. | |
| Photo: © fabreminerals.com. Quartz from Pikes Peak, El Paso Co., Colorado, USA | ||
| Quartz var: Smoky Quartz |  | |
| Formula: | SiO2 | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © 2002 John H. Betts. Smoky Quartz from Pikes Peak, El Paso Co., Colorado, USA | ||
| Rutile | ||
| Formula: | TiO2 | |
| Locality: | Sentinel rock (Specimen rock), Pikes Peak, El Paso Co., Colorado, USA | |
| Samarskite-(Y) | ||
| Formula: | (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8 | |
| Reference: | MinRec 16:217-230 | |
| Sanidine | ||
| Formula: | KAlSi3O8 | |
| Reference: | MinRec 16:217-230 | |
| Schorl | ||
| Formula: | Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH) | |
| Reference: | MinRec 16:217-230 | |
| Siderophyllite (TL) | ||
| Formula: | KFe2+2Al(Al2Si2O10)(OH)2 | |
| Type Locality: | Pikes Peak, El Paso Co., Colorado, USA | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| 'Smectite Group' | ||
| Formula: | A0.3D2-3[T4O10]Z2 · nH2O | |
| Locality: | Pikes Peak batholith miarolitic cavities, Pikes Peak, El Paso Co., Colorado, USA | |
| Thorite | ||
| Formula: | (Th,U)SiO4 | |
| Reference: | MinRec 16:217-230 | |
| Topaz |  | |
| Formula: | Al2(SiO4)(F,OH)2 | |
| Reference: | Minerals of Colorado (1997) Eckel, E. B. | |
| Localities: | Recorded from at least 2 other localities in this region. | |
| Photo: © 2002 John H. Betts. Topaz from Pikes Peak, El Paso Co., Colorado, USA | ||
| Xenotime-(Y) | ||
| Formula: | Y(PO4) | |
| Reference: | MinRec 16:217-230 | |
| Zinnwaldite | ||
| Formula: | KLiFe2+Al(AlSi3O10)(F,OH)2 | |
| Reference: | MinRec 16:217-230 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Zircon | ||
| Formula: | ZrSiO4 | |
| Reference: | MinRec 16:217-230 | |
56 entries listed. 41 valid minerals. 1 type locality (valid mineral).
References
Barker, F., Wones, D.R., Sharp, W.N., and Desborough, G.A. (1975) The Pikes Peak batholith, Colorado Front Range, and a model for the origin of the gabbro-anorthosite-syenite-potassic granite suite. Precambrian Research: 2: 97-160.
Smith, D.R., Noblett, J., Wobus, R.A., Unruh, D., Douglass, J., Beane, R., Davis, C., Goldman, S., Kay, G., Gustavson, B., Saltoun, B., and Stewart, J. (1999) Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (central Colorado, USA): implications for petrogenic models. Precambrian Research: 98: 271-305.
Smith, D.R., Noblett, J., Wobus, R.A., Unruh, D., Douglass, J., Beane, R., Davis, C., Goldman, S., Kay, G., Gustavson, B., Saltoun, B., and Stewart, J. (1999) Petrology and geochemistry of late-stage intrusions of the A-type, mid-Proterozoic Pikes Peak batholith (central Colorado, USA): implications for petrogenic models. Precambrian Research: 98: 271-305.
External Links
- http://en.wikipedia.org/wiki/Pikes_Peak
- http://en.wikipedia.org/wiki/Mineralogy_of_the_Pikes_Peak_Region
- http://en.wikipedia.org/wiki/Mineralogy_of_the_Pikes_Peak_Region
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