tsumebite (w. smithsonite and azurite)

TSNB423

Specimen

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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Title

tsumebite (w. smithsonite and azurite)

Principal Mineral

Tsumebite

Size

Cabinet; 55mm

Location in the Mine

First oxidation zone

Collection

MGMH 101828

Provenance

Von Karabacek, H.

Entry Type

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.

Associated Minerals

azurite; smithsonite