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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Prehnite from
Landshaag, Feldkirchen an der Donau, Urfahr-Umgebung District, Upper Austria, Austria


Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Landshaag, Feldkirchen an der Donau, Urfahr-Umgebung District, Upper Austria, Austria
Data Identifiers
Mindat Occurrence Record ID:768455
Long-form Identifier:1:3:768455:5
GUID (UUID V4):0
References
Erich Reiter, in: Mineralogie (Oberösterreich 1930 – 1982). Jahrbuch oberösterreichischer Musealverein 128 / 1, Sonderdruck, Linz, 1983, Seite 333 – 341.
 
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