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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Bertrandite from
Kaldevassdalen pegmatite, Tokke, Telemark, Norway


07743710017272034436082.jpg
Bertrandite, etc.

Kaldevassdalen pegmatite, Tokke, Telemark, Norway
07743710017272034436082.jpg
Bertrandite, etc.

Kaldevassdalen pegmatite, Tokke, Telemark, Norway
07743710017272034436082.jpg
Bertrandite, etc.

Kaldevassdalen pegmatite, Tokke, Telemark, Norway
Locality type:Pegmatite
Classification
Species:Bertrandite
Formula:Be4(Si2O7)(OH)2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Quartz1
Data
Mineral Data:Click here to view Bertrandite data
Locality Data:Click here to view Kaldevassdalen pegmatite, Tokke, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:765327
Long-form Identifier:1:3:765327:8
GUID (UUID V4):0
References
Jan Andersen photo and specimen
 
and/or  
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