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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Hornblende Root Name Group from
Miller adit, Lyman, Grafton County, New Hampshire, USA


Locality type:Adit
Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view Miller adit, Lyman, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:32077
Long-form Identifier:1:3:32077:3
GUID (UUID V4):0
References
 
and/or  
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