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Vinogradovite & Monteregianite

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SYM140748

Vinogradovite & Monteregianite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.5 × 1.3 cm
Description

Very aesthetic clusters of sharp clear vinogradovite with ball (very rare) and stick shaped monteregianite crystals.

Mineral Data
What's on the rock

Vinogradovite

Formula: 
(Na,Ca,K)4Ti4AlSi6O23(OH)·2H2O
Strunz: 
9.DB.25
Hardness: 
4.0
Type Locality: 
Lepkhe-Nel'm Mt (Lepkhe-Nelm; Nepkha), Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Monteregianite

Synonym Of: 

Monteregianite-(Y)

Formula: 
(Na,K)6(Y,Ca)2Si16O38·10H2O
Strunz: 
9.EB.15
Hardness: 
3.5