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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Romanèchite from
Grønvoldvegen Road Cut (Mn oxide vein), Nome, Telemark, Norway


Locality type:Road Cutting
Classification
Species:Romanèchite
Formula:(Ba,H2O)2(Mn4+,Mn3+)5O10
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Baryte1
Pyrolusite1
Data
Mineral Data:Click here to view Romanèchite data
Locality Data:Click here to view Grønvoldvegen Road Cut (Mn oxide vein), Nome, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:798659
Long-form Identifier:1:3:798659:8
GUID (UUID V4):0
References
Alf Olav Larsen collection & NHM Vienna collection (PXRD- or SXRD-analysed)
Rune S. Selbekk (2010) Norges mineraler - En revidert utgave av Norges mineraler (Neumann 1985) Tapir Akademiske Forlag, Trondheim. p.1-552.p.173
 
and/or  
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