Azurite (on anglesite)

TSNB712
Specimen
Von Karabacek, H.
Exhibit 1. Azurite (on anglesite); 160 mm.
Exhibit 1. Azurite (on anglesite); 160 mm.
Image Credit: Malcolm Southwood
Exhibit 2. 130 mm field of view.
Exhibit 2. 130 mm field of view.
Image Credit: Malcolm Southwood
Thumbnail by 1Thumbnail by 2

Specimen Title

Azurite (on anglesite)

Associated Minerals

anglesite; arsentsumebite (?); malachite

Principal Mineral

Azurite

Size

Cabinet; 160mm

Location in the Mine

First oxidation zone

Provenance

Von Karabacek, H.

Collection

MGMH; 93649

Entry Number

Specimen; TSNB712

Associated Minerals

anglesite; arsentsumebite (?); malachite

Description

Intergrown crystals of milky-white anglesite (to 120 mm) provide the backdrop for a crescent of equant, lustrous, blue-black azurite crystals (to 38 mm). Localised dustings and partial crusts of arsentsumebite (?) and sparse sprays of malachite clearly post-date the larger azurite crystals but are themselves supplanted by a sprinkling of tiny (sub-mm) bright blue azurite crystals (Exhibit 2).

The specimen was number 2068 in the collection of Austrian industrialist Hans von Karabacek, part of which was purchased by Harvard University in 1935, thereby dating it unequivocally to the first oxidation zone.