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Sérandite

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CFL638108

Sérandite

Fluorescent

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 8 × 4.5 cm
Weight: 
300.00gr
Description

Thin serandite crystals literally cover this specimen.  Very unusual crystallization for the species.  Associated with very small crystals of gemmy analcime, greenish acicular and black blocky aegirine, and white fluorescent polylithionite.  There are also other fluorescent microcrystals of unidentified species.  This specimen is probably a pseudomorph.  Ex-Ecole Polytechnique (Montreal University) specimen.

Mineral Data
What's on the rock

Sérandite

Formula: 
Na(Mn2+,Ca)2(HSi3O9)
Strunz: 
9.DG.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

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