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Brewsterite-Ba Gallery

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Brewsterite-Ba : (Ba,Sr)[Al2Si6O16] · 5H2O, Sphalerite : (Zn,Fe2+)S, Quartz : SiO2

Old Luganure mine, Glendasan, Co. Wicklow, Ireland

Crystals, < 1 mm, of brewsterite-Ba encrusting sphalerite and quartz, from Luganure mine. Field of view 5 X 4 cm.
 © Dr Stephen MoretonPhoto ID: 48406    View Count: 494

Brewsterite-Ba : (Ba,Sr)[Al2Si6O16] · 5H2O

Gouverneur Talc Company No. 4 Quarry (Valentine deposit; Valentine property), Harrisville, Diana Township, Lewis Co., New York, USA

Small crystals of pale green, nearly transparent brewsterite-Ba, on prehnite.
0.1 cm field of view. S310-22
Specimen provided courtesy of Van King.
 © 2008, JGWPhoto ID: 149591    View Count: 142
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