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White Cloud pegmatite, South Platte Pegmatite District, Jefferson Co., Colorado, USA

Latitude: 39°23'44"N
Longitude: 105°10'35"W
A pegmatite mine on 2 claims located in sec. 36, T7S, R70W.

Mineralization is a zoned, circular, pipe-like pegmatite body in granite. Core zone: massive quartz; inner zone: quartz-perthite-fluorite; intermediate zone: perthite-quartz; wall zone: quartz-perthite-biotite.

Workings include an open cut.

References

- Meeves, H. et al. (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bureau of Mines Information Circular 8298: 29 (Table A-1).

- Rocks & Minerals (1990): 65: 456.

Mineral List

Albite
var: Cleavelandite

'Allanite'
Allanite-(Ce)
'Bastnäsite'
Biotite
Cerite-(Ce) ?
'Fergusonite'
Fergusonite-(Y)
'Fluocerite'
Fluorite
var: Yttrofluorite
'Gadolinite'
Gadolinite-(Ce)
Gadolinite-(Y)
Hematite
Microcline
Microlite Group
'Monazite'
Muscovite
var: Sericite
'Perthite'
'Prochlorite'
Quartz
Rowlandite-(Y) ?
Synchysite-(Y)
Thalénite-(Y)
Thorite
Topaz
Xenotime-(Y)
Zircon
var: Cyrtolite


31 entries listed. 18 valid minerals.

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