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
Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA


Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Noyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28952
Long-form Identifier:1:3:28952:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.8km (0.5 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
0.8km (0.5 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
2.7km (1.7 miles) ⓘB.B. No. 7 Quarry, Norway, Oxford County, Maine, USA
5.6km (3.5 miles) ⓘEmmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine, USA
14.0km (8.7 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
17.2km (10.7 miles) ⓘBennett Quarry, Buckfield, Oxford County, Maine, USA
22.1km (13.8 miles) ⓘMount Rubellite Quarries, Mount Rubellite, Hebron, Oxford County, Maine, USA
28.8km (17.9 miles) ⓘRumford Falls, Rumford, Oxford County, Maine, USA
32.1km (19.9 miles) ⓘLaFlamme Quarry, Minot, Androscoggin County, Maine, USA
32.4km (20.1 miles) ⓘPitts-Tenney Quarry, Minot, Androscoggin County, Maine, USA
References
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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