Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Pyrochlore Group from
Black Cloud Mine, Teller County, Colorado, USA


Locality type:Mine
Classification
Species:'Pyrochlore Group' (not an IMA approved species)
Formula:A2Nb2(O,OH)6Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrochlore Group data
Locality Data:Click here to view Black Cloud Mine, Teller County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:311004
Long-form Identifier:1:3:311004:1
GUID (UUID V4):0
Nearest other occurrences of Pyrochlore Group
18.4km (11.4 miles) ⓘPikes Peak, El Paso County, Colorado, USA
27.8km (17.3 miles) ⓘLone Pine Feldspar Quarry (Claim: Lone Pine; MS 20867), Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
29.6km (18.4 miles) ⓘSpecimen Rock, El Paso County, Colorado, USA
30.0km (18.7 miles) ⓘRose Dawn Mine (Rose Dawn Mica Mine; North Mine), Micanite Mining District (Currant Creek Mining District), Colorado, USA
30.8km (19.1 miles) ⓘMount Rosa, El Paso County, Colorado, USA
31.7km (19.7 miles) ⓘRosa No. 1 trench, Mount Rosa, El Paso County, Colorado, USA
31.8km (19.7 miles) ⓘStove Mountain (Cookstove Mountain), El Paso County, Colorado, USA
32.5km (20.2 miles) ⓘStove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality), Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
33.7km (20.9 miles) ⓘSt Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
33.7km (20.9 miles) ⓘCheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
References
Meeves, H.; Harrer, C.M.; Salsbury, M.H.; Konselman, A.S; Shannon, S.S. Jnr. (1966) Reconnaissance of beryllium-bearing pegmatite deposits in six western states: Arizona, Colorado, New Mexico, South Dakota, Utah, and Wyoming. Bureau of Mines Information Circular 8298. United States Department of the Interior 34 pp.p.31 - (Table A-1)
 
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