Azurite (w. anglesite)

TSNB705
Specimen
Von Karabacek, H.
Exhibit 1. Azurite (w. anglesite); 80 mm.
Exhibit 1. Azurite (w. anglesite); 80 mm.
Image Credit: Malcolm Southwood
Exhibit 2. Azurite (w. anglesite); 80 mm.
Exhibit 2. Azurite (w. anglesite); 80 mm.
Image Credit: Malcolm Southwood
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Specimen Title

Azurite (w. anglesite)

Associated Minerals

anglesite; arsentsumebite (?); calcite

Principal Mineral

Azurite

Size

Cabinet; 80mm

Location in the Mine

First oxidation zone

Provenance

Von Karabacek, H.

Collection

MGMH; 93549

Entry Number

Specimen; TSNB705

Associated Minerals

anglesite; arsentsumebite (?); calcite

Description

Lustrous, blue-black azurite crystals (to 23 mm) on a very dense matrix of massive anglesite (?) with minor spearmint-green arsentsumebite (?) and a little relict sulphide. Most of the azurite crystals have an equant habit with the exception of the largest, which is prismatic with a pronounced taper towards the termination. At the margins of the display face a few small tabular crystals of colourless-white anglesite intergrown with colourless rhombs of calcite are present.

The specimen is from the collection of Austrian industrialist Hans von Karabacek, part of which was purchased by Harvard University in 1935. This unequivocally dates the specimen to the first oxidation zone.