Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Orthoclase from
Rua Mine area (Two Johns Mine area), Lead Mining District, Lawrence County, South Dakota, USA


Locality type:Area
Classification
Species:Orthoclase
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Rua Mine area (Two Johns Mine area), Lead Mining District, Lawrence County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:214777
Long-form Identifier:1:3:214777:2
GUID (UUID V4):0
References
Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology
 
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