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This specimen is a thin crust of ferrous (iron-based) matrix with dusty red oxidation on the back
I have not been able to find info on common associates of this material)
They have alligator growth forms
This material has the tendency to be crumbly
Hydroxyapophyllite Feldspar This specimen is a thinLocale: N'Chwaning II Mine, South Africa Approx dimensions: 2. 25 x 1. 5 x . 75" Approx weight: 47g This specimen features hydroxyapophyllite crystals with lizardite and calcite on matrix. Properly called "hydroxyapophyllite (K)," hydroxyapophyllite is a variety of apophyllite that is typically colorless. It more frequently grows cubic crystals, but these specimens from the renowned N'Chwaning Mines region form tabular square crystals similar to
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