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Big Bertha Mine, South Platte Pegmatite Mining District, Jefferson County, Colorado, USAi
Regional Level Types
Big Bertha MineMine
South Platte Pegmatite Mining DistrictMining District
Jefferson CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
39° 20' 12'' North , 105° 13' 3'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Roxborough Park9,099 (2011)19.0km
Westcreek129 (2011)21.0km
Perry Park1,646 (2011)21.3km
Aspen Park882 (2011)23.4km
Louviers269 (2011)23.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Littleton Gem and Mineral Club, Inc.Littleton, Colorado35km
Lake George Gem & Mineral clubLake George, Colorado41km
Colorado Mineral SocietyLakewood, Colorado43km
Denver Gem and Mineral GuildDenver, Colorado49km
Friends of Mineralogy - Colorado Chapter Denver, Colorado49km
Mindat Locality ID:
66714
Long-form identifier:
mindat:1:2:66714:5
GUID (UUID V4):
0
Other/historical names associated with this locality:
Big Bertha pegmatite


A pegmatite mine located in the SW¼ Sec 22, T.8S., R.70W.

Mineralization is an unzoned, lobate pegmatite body in granite.

Workings include a large open cut.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

ⓘ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ⓘ Fluorite
Formula: CaF2
ⓘ Fluorite var. Yttrocerite
Formula: (Ca,Y,Ce)F2+x
ⓘ 'Gadolinite'
ⓘ 'Monazite Group'
Formula: REE(PO4)
ⓘ Synchysite-(Y)
Formula: CaY(CO3)2F
ⓘ Thorite
Formula: Th(SiO4)
ⓘ Thorite var. Thorogummite
Formula: (Th,U)(SiO4)1-x(OH)4x
ⓘ Xenotime-(Y)
Formula: Y(PO4)
ⓘ Zircon
Formula: Zr(SiO4)
ⓘ Zircon var. Cyrtolite
Formula: Zr[(SiO4),(OH)4]

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
ⓘvar. Yttrocerite3.AB.25(Ca,Y,Ce)F2+x
Group 5 - Nitrates and Carbonates
ⓘSynchysite-(Y)5.BD.20cCaY(CO3)2F
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
ⓘThorite9.AD.30Th(SiO4)
ⓘvar. Thorogummite9.AD.30(Th,U)(SiO4)1-x(OH)4x
ⓘZircon9.AD.30Zr(SiO4)
ⓘvar. Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
Unclassified
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Gadolinite'-
ⓘ'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Hⓘ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Hⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
CCarbon
Cⓘ Synchysite-(Y)CaY(CO3)2F
OOxygen
Oⓘ Monazite GroupREE(PO4)
Oⓘ Synchysite-(Y)CaY(CO3)2F
Oⓘ ThoriteTh(SiO4)
Oⓘ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Oⓘ Xenotime-(Y)Y(PO4)
Oⓘ ZirconZr(SiO4)
Oⓘ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Oⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fⓘ FluoriteCaF2
Fⓘ Synchysite-(Y)CaY(CO3)2F
Fⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
SiSilicon
Siⓘ ThoriteTh(SiO4)
Siⓘ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Siⓘ ZirconZr(SiO4)
Siⓘ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Siⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ Xenotime-(Y)Y(PO4)
CaCalcium
Caⓘ FluoriteCaF2
Caⓘ Synchysite-(Y)CaY(CO3)2F
Caⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
YYttrium
Yⓘ Synchysite-(Y)CaY(CO3)2F
Yⓘ Xenotime-(Y)Y(PO4)
Yⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
ZrZirconium
Zrⓘ ZirconZr(SiO4)
Zrⓘ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
CeCerium
Ceⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
ThThorium
Thⓘ ThoriteTh(SiO4)
Thⓘ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
UUranium
Uⓘ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x

Other Regions, Features and Areas containing this locality


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