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Cressmans Gulch Mine (Cressmans Gulch pegmatite), Clear Creek pegmatite Province, Jefferson County, Colorado, USAi
Regional Level Types
Cressmans Gulch Mine (Cressmans Gulch pegmatite)Mine
Clear Creek pegmatite ProvinceProvince
Jefferson CountyCounty
ColoradoState
USACountry

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05066830017272023093432.jpg
Pegmatite Prospect

Cressmans Gulch Mine, Clear Creek pegmatite Province, Jefferson County, Colorado, USA
05066830017272023093432.jpg
Pegmatite Prospect

Cressmans Gulch Mine, Clear Creek pegmatite Province, Jefferson County, Colorado, USA
05066830017272023093432.jpg
Pegmatite Prospect

Cressmans Gulch Mine, Clear Creek pegmatite Province, Jefferson County, Colorado, USA
Latitude & Longitude (WGS84):
39° 47' 26'' North , 105° 16' 1'' West
Latitude & Longitude (decimal):
39.79056,-105.26694
GRN:
N27W59
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Golden20,330 (2017)5.5km
Applewood7,160 (2011)9.6km
West Pleasant View3,840 (2011)9.9km
Genesee3,609 (2011)11.7km
East Pleasant View356 (2011)11.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Mile High Rock and Mineral SocietyArvada, Colorado15km
Colorado Mineral SocietyLakewood, Colorado19km
Denver Gem and Mineral GuildDenver, Colorado25km
Friends of Mineralogy - Colorado Chapter Denver, Colorado25km
Western Interior Paleontological SocietyDenver, Colorado25km
Mindat Locality ID:
6235
Long-form identifier:
mindat:1:2:6235:3
GUID (UUID V4):
0


A pegmatite mine prospect located in the SE¼ sec. 17, T. 3 S., R. 70 W., in Cressmans Gulch, the first gulch north of Golden Gate Canyon.

Mineralization is comprised of 4 partially zoned pegmatite exposures, 1,500 feet long and 10 to 40 feet wide.

Workings include 2 sidehill cuts.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Quartz
Formula: SiO2
ⓘ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
ⓘ Tantalite-(Mn)
Formula: Mn2+Ta2O6
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘTantalite-(Mn)4.DB.35Mn2+Ta2O6
Group 5 - Nitrates and Carbonates
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Columbite-(Fe)-Columbite-(Mn) Series'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ Tantalite-(Mn)Mn2+Ta2O6
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Columbite-(Fe)-Columbite-(Mn) Series
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MnManganese
Mnⓘ Tantalite-(Mn)Mn2+Ta2O6
Mnⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Mnⓘ Columbite-(Fe)-Columbite-(Mn) Series
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Feⓘ Columbite-(Fe)-Columbite-(Mn) Series
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ MalachiteCu2(CO3)(OH)2
NbNiobium
Nbⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Nbⓘ Columbite-(Fe)-Columbite-(Mn) Series
TaTantalum
Taⓘ Tantalite-(Mn)Mn2+Ta2O6
Taⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Ref.: Eckel, E. B. (1997), Minerals of Colorado, updated & revised: 19; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 27 (Table A-1).
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