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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Obsidian from
Minidoka (Sweetzer-Burroughs Dredge), Snake River Area, Blaine County, Idaho, USA


Classification
Type:Obsidian
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Obsidian data
Locality Data:Click here to view Minidoka (Sweetzer-Burroughs Dredge), Snake River Area, Blaine County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:449387
Long-form Identifier:1:3:449387:7
GUID (UUID V4):0
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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