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Eudidymite Polylithionite & Ferroceladonite

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CFL1040028

Eudidymite Polylithionite & Ferroceladonite

Fluorescent

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.8 × 3.3 cm
Description

Uncommon specimen of eudidymite crystals associated with weakly fluorescent polylithionite, ferroceladonite and beige spherules of an unidentified species.  Collected in 1999.

Mineral Data
What's on the rock

Eudidymite

Formula: 
Na2Be2Si6O15·H2O
Strunz: 
9.DG.60
Hardness: 
6.0
Type Locality: 
Eudidymite locality, Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö), Langesundsfjorden, Larvik, Vestfold, Norway

Polylithionite

Formula: 
KLi2Al(Si4O10)(F,OH)2
Strunz: 
9.EC.20
Hardness: 
2.0 - 3.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

Ferroceladonite

Formula: 
K(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
Strunz: 
9.EC.15
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Type Locality: 
Hokonui Hills, South Island, New Zealand

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