Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Dawsonite 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:Dawsonite
Formula:NaAlCO3(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Goethite1
Data
Mineral Data:Click here to view Dawsonite 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:358128
Long-form Identifier:1:3:358128:5
GUID (UUID V4):0
Nearest other occurrences of Dawsonite
7.2km (4.5 miles) ⓘRosemont quarry, Montréal, Québec, Canada
8.1km (5.0 miles) ⓘFrancon quarry, Montréal, Québec, Canada
9.7km (6.0 miles) ⓘMiron Quarry, Montréal, Québec, Canada
13.2km (8.2 miles) ⓘMcTavish Reservoir (Rutherford Park; Lower Reservoir; Montreal Reservoir), Mont Royal, Montréal, Québec, Canada
13.4km (8.3 miles) ⓘMcGill University campus, Mont Royal, Montréal, Québec, Canada
13.6km (8.5 miles) ⓘVille Marie Expressway (Autoroute 720), 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
15.8km (9.8 miles) ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
17.2km (10.7 miles) ⓘDulude Quarry (DJL - Carrière Mont-Bruno), Mont Saint Bruno, Saint-Bruno-de-Montarville, Longueuil TE, Montérégie, Québec, Canada
References
Canadian Museum of Nature collection
 
and/or  
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