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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Chalcopyrite from
Black Tail Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA


Locality type:Prospect
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Black Tail Prospect, North Fork of the Skokomish River Area, Mason County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:309807
Long-form Identifier:1:3:309807:3
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.5km (0.9 miles) ⓘBlack and White Mine, North Fork of the Skokomish River Area, Mason County, Washington, USA
51.8km (32.2 miles) ⓘAngeles Star Prospect, Clallam County, Washington, USA
56.3km (35.0 miles) ⓘBeaver Valley Quarry, Jefferson County, Washington, USA
57.9km (35.9 miles) ⓘShine Quarry, Jefferson County, Washington, USA
63.6km (39.5 miles) ⓘMats Mats Quarry, Jefferson County, Washington, USA
76.3km (47.4 miles) ⓘKathryn Prospect, Clallam County, Washington, USA
90.6km (56.3 miles) ⓘWillow Grouse Mine, Victoria Mining Division, Vancouver Island, British Columbia, Canada
References
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
 
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