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Sentinel rock (Specimen rock), Pikes Peak, El Paso County, Colorado, USAi
Regional Level Types
Sentinel rock (Specimen rock)- not defined -
Pikes PeakPeak
El Paso CountyCounty
ColoradoState
USACountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
38° 48' 16'' North , 104° 55' 4'' West
Latitude & Longitude (decimal):
38.80468,-104.91782
GeoHash:
G#: 9wvku81jt
GRN:
N26W59
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Manitou Springs5,334 (2017)6.1km
Colorado Springs456,568 (2017)9.0km
Stratmoor6,900 (2011)12.4km
Fort Carson13,813 (2011)13.4km
Green Mountain Falls656 (2017)16.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Colorado Springs Mineral SocietyColorado Springs, Colorado9km
Lake George Gem & Mineral clubLake George, Colorado43km
Canon City Geology ClubCanon City, Colorado49km
Mindat Locality ID:
72523
Long-form identifier:
mindat:1:2:72523:6
GUID (UUID V4):
07c68fb3-6999-4d0f-95aa-51ad78f5e1d9


Miarolitic cavities.
Pike's Peak batholith.
"Smoky quartz and other pegmatite minerals are found at Sentinel Rock and Specimen Rock, two prominent granite outcrops located three miles west of Colorado Springs near the junction of High Drive and Gold Camp Road. In 1885, George Frederick Kunz described Sentinel Rock and Specimen Rock as Colorado's "richest area for quartz", and noted the recovery of thousands of smoky quartz crystals from one inch to four feet in length. .... For information about restrictions, contact the nearby Bear Creek Regional Park Nature Center." from 'Colorado Rockhounding' which includes a site photograph and map.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
References:
Adam Sotomayor
ⓘ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
References:
Adam Sotomayor
ⓘ Bertrandite
Formula: Be4(Si2O7)(OH)2
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Fluorite
Formula: CaF2
ⓘ Goethite
Formula: α-Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
Description: Pseudomorph after siderite
ⓘ 'Limonite'
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Microcline var. Amazonite
Formula: K(AlSi3O8)
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Phenakite
Formula: Be2SiO4
References:
Adam Sotomayor
ⓘ Polylithionite
Formula: KLi2Al(Si4O10)(F,OH)2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Smoky Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
References:
Adam Sotomayor

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘGoethite4.00.α-Fe3+O(OH)
ⓘHematite4.CB.05Fe2O3
ⓘQuartz
var. Smoky Quartz		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘPhenakite9.AA.05Be2SiO4
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘBertrandite9.BD.05Be4(Si2O7)(OH)2
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘMuscovite
var. Sericite		9.EC.15KAl2(AlSi3O10)(OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘPolylithionite9.EC.20KLi2Al(Si4O10)(F,OH)2
ⓘMicrocline
var. Amazonite		9.FA.30K(AlSi3O8)
ⓘ9.FA.30K(AlSi3O8)
ⓘAlbite
var. Cleavelandite		9.FA.35Na(AlSi3O8)
ⓘ9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Limonite'-
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
Hⓘ BertranditeBe4(Si2O7)(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ Goethiteα-Fe3+O(OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Hⓘ TopazAl2(SiO4)(F,OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
LiLithium
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
BeBeryllium
Beⓘ BertranditeBe4(Si2O7)(OH)2
Beⓘ PhenakiteBe2SiO4
BBoron
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Microcline var. AmazoniteK(AlSi3O8)
Oⓘ BertranditeBe4(Si2O7)(OH)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Goethiteα-Fe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PhenakiteBe2SiO4
Oⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ Quartz var. Smoky QuartzSiO2
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ Albite var. CleavelanditeNa(AlSi3O8)
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluoriteCaF2
Fⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Fⓘ TopazAl2(SiO4)(F,OH)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Albite var. CleavelanditeNa(AlSi3O8)
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Microcline var. AmazoniteK(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Alⓘ TopazAl2(SiO4)(F,OH)2
Alⓘ Albite var. CleavelanditeNa(AlSi3O8)
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Microcline var. AmazoniteK(AlSi3O8)
Siⓘ BertranditeBe4(Si2O7)(OH)2
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PhenakiteBe2SiO4
Siⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Siⓘ QuartzSiO2
Siⓘ Quartz var. Smoky QuartzSiO2
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ Albite var. CleavelanditeNa(AlSi3O8)
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
KPotassium
Kⓘ Microcline var. AmazoniteK(AlSi3O8)
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ PolylithioniteKLi2Al(Si4O10)(F,OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ FluoriteCaF2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Goethiteα-Fe3+O(OH)
Feⓘ HematiteFe2O3
TaTantalum
Taⓘ Microlite GroupA2-mTa2X6-wZ-n

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

'Colorado Rockhounding' by Stephen M. Voynick, Copyright 1994, Mountain Press Publishing Company
Brigatti, Maria Franca, Lugli, Cristina, Poppi, Luciano, Foord, Eugene E., Kile, Daniel E. (2000) Crystal chemical variations in Li- and Fe-rich micas from Pikes Peak batholith (central Colorado). American Mineralogist, 85(9), 1275-1286.
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