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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Montmorillonite from
Keith Quarry (Towne Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA


Locality type:Quarry
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Keith Quarry (Towne Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:33456
Long-form Identifier:1:3:33456:3
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
0.1km (0.1 miles) ⓘPulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
0.3km (0.2 miles) ⓘGroves Quarry (Hole in the Ground Quarry), West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
0.8km (0.5 miles) ⓘMaine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
0.9km (0.6 miles) ⓘGreenlaw Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
2.0km (1.2 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
17.7km (11.0 miles) ⓘMount Marie Quarries, Paris, Oxford County, Maine, USA
24.2km (15.1 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
24.7km (15.4 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
26.4km (16.4 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
32.6km (20.3 miles) ⓘB.B. No. 7 Quarry, Norway, Oxford County, Maine, USA
References
 
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