tsumebite (w. smithsonite and azurite)

TSNB423
Specimen
Von Karabacek, H.
Exhibit 1. Tsumebite (w. azurite and smithsonite); 55 mm.
Exhibit 1. Tsumebite (w. azurite and smithsonite); 55 mm.
Image Credit: Malcolm Southwood
Exhibit 2. 28 mm fieeld of view.
Exhibit 2. 28 mm fieeld of view.
Image Credit: Malcolm Southwood
Exhibit 3. Specimen label (Hans von Karabacek).
Exhibit 3. Specimen label (Hans von Karabacek).
Image Credit: Malcolm Southwood
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Specimen Title

tsumebite (w. smithsonite and azurite)

Associated Minerals

azurite; smithsonite

Principal Mineral

Tsumebite

Size

Cabinet; 55mm

Location in the Mine

First oxidation zone

Provenance

Von Karabacek, H.

Collection

MGMH; 101828

Entry Number

Specimen; TSNB423

Description

Composite (twinned) crystals of sub-adamantine, sea-green tsumebite (to 1.5 mm) on a crust of white, sub-mm rhombohedral crystals of smithsonite (Exhibit 2). An isolated aggregate of massive (broken) inky-blue azurite is also present.

Tsumebite is an extremely rare mineral at its type locality and this is an exceptional specimen. It was number 4532 in the collection of Hans von Karabacek, much of which was acquired by Harvard University in 1935. Exhibit 3 shows von Karabacek's specimen label.