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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Microcline from
Fletcher Mine, Groton, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Microcline
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Microcline data
Locality Data:Click here to view Fletcher Mine, Groton, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:37129
Long-form Identifier:1:3:37129:0
GUID (UUID V4):0
Nearest other occurrences of Microcline
4.5km (2.8 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
5.1km (3.2 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
5.3km (3.3 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
5.8km (3.6 miles) ⓘRice Quarry, Groton, Grafton County, New Hampshire, USA
10.5km (6.5 miles) ⓘMorgan Mica prospect, Alexandria, Grafton County, New Hampshire, USA
11.9km (7.4 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
12.5km (7.7 miles) ⓘTruman Patten Quarry, Alexandria, Grafton County, New Hampshire, USA
12.6km (7.8 miles) ⓘMonarch Quarry, Alexandria, Grafton County, New Hampshire, USA
13.8km (8.6 miles) ⓘWadhams-Tucker Quarry, Alexandria, Grafton County, New Hampshire, USA
15.6km (9.7 miles) ⓘNew Haven Mica Quarry, Alexandria, Grafton 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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