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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Gonnardite from
Dobrná, Děčín District, Ústí nad Labem Region, Czech Republic


Locality type:Municipality
Classification
Species:Gonnardite
Formula:(Na,Ca)2(Si,Al)5O10 · 3H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gonnardite data
Locality Data:Click here to view Dobrná, Děčín District, Ústí nad Labem Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:680355
Long-form Identifier:1:3:680355:1
GUID (UUID V4):0
References
Pauliš, P. (2000) Nejzajímavější mineralogická naleziště Čech, part I. Kuttna, Kutná Hora.
 
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