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Gerasimovskite & Ussingite

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SKY639905

Gerasimovskite & Ussingite

Classic Locality

Description Tabs

Description
Locality: 
Karnasurt Mountain, Lovozero Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.7 × 1.5 cm
Description

Brown crystals of the very rare Mn-Nb-oxide mineral gerasimovskite from one of the very few known localities worldwide, and associated to ussingite.

Mineral Data
What's on the rock

Gerasimovskite

Formula: 
(Mn,Ca)(Nb,Ti)5O12·9H2O
Strunz: 
4.FM.25
Hardness: 
2.0
Type Locality: 
Malyi Punkaruaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Ussingite

Formula: 
Na2AlSi3O8OH
Strunz: 
9.EH.20
Crystal System: 
Triclinic
Hardness: 
6.0 - 7.0
Streak: 
white
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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