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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Hydroxyapophyllite-(K) from
Horseshoe Dam area (Horseshoe Dam Clinoptilolite occurrence), Maricopa County, Arizona, USA


06523090017498712914961.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
01847430017498712927682.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
06523090017498712914961.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
01847430017498712927682.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
09866680017431852246817.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
01847430017498712927682.jpg
Hydroxyapophyllite-(K), etc.

Horseshoe Dam area, Maricopa County, Arizona, USA
Locality type:Area
Classification
Species:Hydroxyapophyllite-(K)
Formula:KCa4(Si8O20)(OH,F) · 8H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Natrolite4
Okenite3
Data
Mineral Data:Click here to view Hydroxyapophyllite-(K) data
Locality Data:Click here to view Horseshoe Dam area (Horseshoe Dam Clinoptilolite occurrence), Maricopa County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:678233
Long-form Identifier:1:3:678233:7
GUID (UUID V4):0
References
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.
 
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