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Opal from
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Mineral Species
Species:Opal
Formula:SiO2 · nH2O
Description
Comments:Sky to dark blue opal coating quartz crystals.
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:http://membres.lycos.fr/quebecminerals/tripbluequartz.html
Associated Minerals Based on Photo Data:
Siderite3 photos of Opal associated with Siderite at this locality.
Zircon2 photos of Opal associated with Zircon at this locality.
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Photo GalleryView Gallery (5 photos)
Nearest other occurrences of Opal
19.5km (12.1 miles) A Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
224.4km (139.5 miles) B Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA
233.3km (145.0 miles) C Government Pit (Government Gravel Pits), Albany, Carroll Co., New Hampshire, USA
Mineral and/or Locality  
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