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
Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada


Locality type:Tunnel
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 Canadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
Data Identifiers
Mindat Occurrence Record ID:697306
Long-form Identifier:1:3:697306:3
GUID (UUID V4):0
Nearest other occurrences of Natrolite
1.8km (1.1 miles) ⓘCorporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada
4.2km (2.6 miles) ⓘMcTavish Reservoir (Rutherford Park; Lower Reservoir; Montreal Reservoir), Mont Royal, Montréal, Québec, Canada
5.5km (3.4 miles) ⓘMiron Quarry, Montréal, Québec, Canada
6.4km (4.0 miles) ⓘFrancon quarry, Montréal, Québec, Canada
7.1km (4.4 miles) ⓘRosemont quarry, Montréal, Québec, Canada
11.8km (7.3 miles) ⓘLongueuil sill, Longueuil TE, Montérégie, Québec, Canada
14.1km (8.8 miles) ⓘLafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada
28.3km (17.6 miles) ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
33.9km (21.0 miles) ⓘHusereau Hill, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
38.6km (24.0 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
References
Finley (1930)
 
and/or  
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