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Cesstibtantite

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SKY816211

Cesstibtantite

Type Locality

Description Tabs

Description
Locality: 
Tanco Mine, Bernic Lake, Lac-du-Bonnet, Manitoba, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.6 × 0.8 cm
Description

Brownish crystals of the very rare cesium mineral cesstibtantite from one of the few known localities for the mineral.

Cesstibtantite is a member of the microlite group.

Cesium minerals are extremely rare in nature, only about 30 mineral species are known to be Ce containing minerals.

Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium.

 

Mineral Data
What's on the rock

Cesstibtantite

Variety Of: 

Microlite Group

Formula: 
(Cs,Na)SbTa4O12
Strunz: 
4.DH.15
Hardness: 
6.5
Type Locality: 
Vasin-Myl'k Mt, Voron'i Tundry, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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