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
Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford 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 Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28561
Long-form Identifier:1:3:28561:0
GUID (UUID V4):0
Nearest other occurrences of Montmorillonite
5.6km (3.5 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
5.6km (3.5 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
6.2km (3.9 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
6.3km (3.9 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
8.2km (5.1 miles) ⓘB.B. No. 7 Quarry, Norway, Oxford County, Maine, USA
18.4km (11.4 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
18.6km (11.6 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
21.6km (13.4 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
22.1km (13.7 miles) ⓘCole Quarry, Stoneham, Oxford County, Maine, USA
23.4km (14.5 miles) ⓘLord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
References
 
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