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Epistolite & Raite

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SYM175397

Epistolite & Raite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 1.5 cm
Description

Sprays of light brown raite with thin pinkish blades of epistolite with a few crystals of raite. Raite (upper middle right of specimen). Epistolite (lower middle).

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

Raite

Formula: 
Na4Mn2+3Ti0.25Si8O20(OH)2·10H2O
Strunz: 
9.EE.55
Hardness: 
3.0 - 0.0
Streak: 
Yellow
Type Locality: 
Yubileinaya pegmatite (Yubileinoye; Jubilejnaja), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...