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Leucosphenite & Monteregianite-(Y)

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CSL100543

Leucosphenite & Monteregianite-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Mont Saint-Hilaire, Montérégie, Québec, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 0.8 × 1.4 cm
Largest Crystal: 
0.40cm
Description

This speicmen comes with two fairly rare speices.
The pale yellow tabular crystal is a Ba-Na-Ti bearing silicate mineral called leucosphenite. The grey longprismatic crystals are monteregianites.
Monteregianite-(Y) is a yttrium bearing silicate species which can be found only at MSH.

Mineral Data
What's on the rock

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

Monteregianite-(Y)

Formula: 
(Na,K)6(Y,Ca)2Si16O38·10H2O
Strunz: 
9.EB.15
Hardness: 
3.5
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Loranth Minerals

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