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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Halloysite from
Kolársky vrch deposit, Pezinok, Pezinok District, Bratislava Region, Slovakia


Locality type:Deposit
Classification
Species:Halloysite
Formula:Al2Si2O5(OH)4 · n(H2O)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Halloysite data
Locality Data:Click here to view Kolársky vrch deposit, Pezinok, Pezinok District, Bratislava Region, Slovakia
Data Identifiers
Mindat Occurrence Record ID:26009
Long-form Identifier:1:3:26009:1
GUID (UUID V4):0
References
Uher, Pavel, Michal, Silvio, Vitálos, Jirí (2000) The Pezinok Antimony Mine, Malé Karpaty Mountains, Slovakia. The Mineralogical Record, 31 (2) 153-162pp.153-162
 
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