Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Biotite from
Lafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada


Locality type:Quarry
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Lafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada
Data Identifiers
Mindat Occurrence Record ID:826612
Long-form Identifier:1:3:826612:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.2km (4.5 miles) ⓘRosemont quarry, Montréal, Québec, Canada
8.1km (5.0 miles) ⓘFrancon quarry, Montréal, Québec, Canada
13.8km (8.5 miles) ⓘCorporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada
14.1km (8.8 miles) ⓘCanadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
31.3km (19.4 miles) ⓘPoudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
40.7km (25.3 miles) ⓘMont Rougemont, Rouville RCM, Montérégie, Québec, Canada
40.8km (25.3 miles) ⓘSt Lawrence Columbium Mine, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
41.8km (26.0 miles) ⓘMont Saint-Gregoire (Mont Johnson; Monoir), Le Haut-Richelieu RCM, Montérégie, Québec, Canada
41.9km (26.0 miles) ⓘManny zone, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
42.1km (26.1 miles) ⓘBond zone, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
References
Alarie, E. and Martin, R.F., (2006) Striking Megacrysts of Potassian Titanian Pargasite in a Camptonite Dike in East-End Montreal, Quebec in Geological Association of Canada, Program with Abstracts Volume 31
 
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