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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Feldspar Group from
Big Mine, Alstead, Cheshire County, New Hampshire, USA


Locality type:Mine
Classification
Species:'Feldspar Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Feldspar Group data
Locality Data:Click here to view Big Mine, Alstead, Cheshire County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:1017901
Long-form Identifier:1:3:1017901:7
GUID (UUID V4):0
Nearest other occurrences of Feldspar Group
1.3km (0.8 miles) ⓘBlister Mine, Alstead, Cheshire County, New Hampshire, USA
1.9km (1.2 miles) ⓘBeauregard Mine, Alstead, Cheshire County, New Hampshire, USA
4.4km (2.7 miles) ⓘDavidson Farm pegmatite, Alstead, Cheshire County, New Hampshire, USA
7.6km (4.7 miles) ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA
8.7km (5.4 miles) ⓘChickering Mine, Walpole, Cheshire County, New Hampshire, USA
30.4km (18.9 miles) ⓘGeorge Frank Smith Quarry, Newport, Sullivan County, New Hampshire, USA
32.9km (20.5 miles) ⓘDummerston granite quarry, Dummerston, Windham County, Vermont, USA
34.6km (21.5 miles) ⓘGreen Mountain, Claremont, Sullivan County, New Hampshire, USA
42.5km (26.4 miles) ⓘAscutney Mountain complex, Windsor County, Vermont, USA
54.2km (33.7 miles) ⓘAaron's Ledge Mine, Springfield, Sullivan County, New Hampshire, USA
References
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
 
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