Home > Mexico IV Ojuela II – January 19 > MS1748 Austinite (cuprian) with Calcite

Austinite (cuprian) with Calcite

Austinite is a hydrous calcium zinc arsenate. The mineral has the same crystal structure as conichalcite, with which it forms a series. Staples (1935) named the species after Austin Flint Rogers (1877-1957), mineralogist at Stanford University. Austinite is a so-called allochromatic mineral, one without inherent color derived from its ideal chemistry. Substitution of copper for zinc readily imparts the dark green coloration evident in this example.

Austinite forms scattered 1 mm curved crystals scattered over limonite matrix. A white calcite crystal, 1.2 cm, provides contrast. This material dates to the mid 1950s or early 1960s. This specimen was part of the Charles Trantham (1936-2020) estate. Attractive.

Price: $75

Item code: MS1748

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