
Image Credit: Malcolm Southwood

Image Credit: Malcolm Southwood

Image Credit: Malcolm Southwood



Specimen Title
tsumebite (w. smithsonite and azurite)
Associated Minerals
azurite; smithsonite
Principal Mineral
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.