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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Gypsum from
Republic Mine, Republic Mining District, Ferry County, Washington, USA


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Republic Mine, Republic Mining District, Ferry County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:384178
Long-form Identifier:1:3:384178:5
GUID (UUID V4):0
Nearest other occurrences of Gypsum
4.1km (2.6 miles) ⓘKnob Hill Mine, Republic Mining District, Ferry County, Washington, USA
49.7km (30.9 miles) ⓘJennie Mine, Ferry County, Washington, USA
51.0km (31.7 miles) ⓘGray Eagle Mine, Kettle Falls Mining District, Stevens County, Washington, USA
55.6km (34.5 miles) ⓘPoison Lake, Wannacut Lake Mining District, Okanogan County, Washington, USA
64.7km (40.2 miles) ⓘMount Tolman Deposit, San Poil Mining District (Keller Mining District), Ferry County, Washington, USA
65.3km (40.6 miles) ⓘBitter Lake, Oroville Mining District, Okanogan County, Washington, USA
66.3km (41.2 miles) ⓘPathfinder prospect, Pathfinder Creek, Brown's Camp, Greenwood Mining Division, British Columbia, Canada
78.3km (48.7 miles) ⓘLenton Flat, Nighthawk Mining District, Okanogan County, Washington, USA
References
Geology and Ore Deposits of Republic Mining District, J.B. Umpleby, 1910
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.
 
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