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Monteregianite Leucosphenite & Vinogradovite

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SYM124376

Monteregianite Leucosphenite & Vinogradovite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.5 × 1 cm
Description

Very rare montergianite ball with a very light green leucosphenite crystal beside it. There are also serveral whitish vinogradovite crystal sprays.

Mineral Data
What's on the rock

Monteregianite

Synonym Of: 

Monteregianite-(Y)

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

Leucosphenite

Formula: 
BaNa4Ti2B2Si10O30
Strunz: 
9.DP.15
Hardness: 
6.0 - 6.5
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

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...