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Kalborsite

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SMM718211

Kalborsite

Rare Mineral from Type Locality
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Description
Locality: 
Kirovskii Mine, Kukisvumchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 2 cm
Description

Kalborsite is an extremely rare mineral of the zeolite group, the name is from it's components K,Al,B,Si. The sample show a colorless, well visible crystal that comes out of dark-red eudyalite crystals. Difficult to find samples and I found few photos of this specie. 

Boxed with Label
Mineral Data
What's on the rock

Kalborsite

Formula: 
K6Al4BSi6O20(OH)4Cl
Strunz: 
9.GA.15
Hardness: 
6.0
Type Locality: 
Apatitovyi Tsirk (Apatite Circus), Rasvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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