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Epistolite

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SKY896197

Epistolite

Rare Mineral

Description Tabs

Description
Locality: 
Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.2 × 0.7 cm
Description

Colorless platy silky crystals of the very rare niobium mineral epistolite from the type locality in Greenland.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

Mineral Data
What's on the rock

Epistolite

Formula: 
Na2(Nb,Ti)2(Si2O7)O2·nH2O
Strunz: 
9.BE.30
Hardness: 
2.5 - 3.0
Type Locality: 
Nunarssuatsiaq, Tunulliarfik Fjord (Tunugdliarfik), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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