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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Natrolite from
McTavish Reservoir (Rutherford Park; Lower Reservoir; Montreal Reservoir), Mont Royal, Montréal, Québec, Canada


Locality type:Reservoir
Classification
Species:Natrolite
Formula:Na2Al2Si3O10 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Natrolite data
Locality Data:Click here to view McTavish Reservoir (Rutherford Park; Lower Reservoir; Montreal Reservoir), Mont Royal, Montréal, Québec, Canada
Data Identifiers
Mindat Occurrence Record ID:954271
Long-form Identifier:1:3:954271:6
GUID (UUID V4):0
Nearest other occurrences of Natrolite
2.5km (1.5 miles) ⓘCorporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada
4.2km (2.6 miles) ⓘCanadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
6.2km (3.8 miles) ⓘRosemont quarry, Montréal, Québec, Canada
7.2km (4.5 miles) ⓘFrancon quarry, Montréal, Québec, Canada
7.3km (4.6 miles) ⓘMiron Quarry, Montréal, Québec, Canada
8.8km (5.5 miles) ⓘLongueuil sill, Longueuil TE, Montérégie, Québec, Canada
13.2km (8.2 miles) ⓘLafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada
25.7km (16.0 miles) ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
34.7km (21.6 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
38.0km (23.6 miles) ⓘHusereau Hill, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
References
Harrington, B.J. (1876)
 
and/or  
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