Bultfonteinite with Hydroxylapophyllite-K, Calcite
specimen number:
5002372
location:
N'Chwaning II mine, Northern Cape, South Africa
description:
Fanlike groups of snowy white acicular crystals of bultfonteinite replacing the faces of short elongated crystals of hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of calcite.
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