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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Elpasolite from
St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA


Locality type:Dome
Classification
Species:Elpasolite
Formula:K2NaAlF6
Comments:Occurs in solution cavities in massive pachnolite.
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Elpasolite data
Locality Data:Click here to view St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:4828
Long-form Identifier:1:3:4828:6
GUID (UUID V4):0
Localities for Elpasolite in this Region
Eureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
Nearest other occurrences of Elpasolite
0.8km (0.5 miles) ⓘEureka Tunnel (1-15 pegmatite), St Peters Dome, Cheyenne Mining District (St. Peters Dome Mining District), El Paso County, Colorado, USA
68.6km (42.7 miles) ⓘGoldie carbonatite, Fremont County, Colorado, USA
References
Cross, W., Hillebrand, W.F. (1883) On minerals of the cryolite group recently found in Colorado. American Journal of Science, 26, 271-294.p.283
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
 
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