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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Calcite from
Longueuil sill, Longueuil TE, Montérégie, Québec, Canada


Locality type:Sill
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Longueuil sill, Longueuil TE, Montérégie, Québec, Canada
Data Identifiers
Mindat Occurrence Record ID:732887
Long-form Identifier:1:3:732887:9
GUID (UUID V4):0
Nearest other occurrences of Calcite
5.8km (3.6 miles) ⓘRosemont quarry, Montréal, Québec, Canada
7.4km (4.6 miles) ⓘLafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada
7.7km (4.8 miles) ⓘBoucherville, Lajemmerais RCM, Montérégie, Québec, Canada
8.6km (5.3 miles) ⓘFrancon quarry, Montréal, Québec, Canada
8.8km (5.4 miles) ⓘMcGill University campus, Mont Royal, Montréal, Québec, Canada
8.8km (5.5 miles) ⓘMcTavish Reservoir (Rutherford Park; Lower Reservoir; Montreal Reservoir), Mont Royal, Montréal, Québec, Canada
9.3km (5.8 miles) ⓘPointe-aux-Trembles, Montréal, Québec, Canada
10.2km (6.4 miles) ⓘMiron Quarry, Montréal, Québec, Canada
11.8km (7.3 miles) ⓘCanadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada
12.2km (7.6 miles) ⓘGoyer quarry, Mont Saint Bruno, Saint-Bruno-de-Montarville, Longueuil TE, Montérégie, Québec, Canada
References
Horváth collection
 
and/or  
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