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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Muscovite from
Mud Mica Mine, Alexandria, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Mud Mica Mine, Alexandria, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:32379
Long-form Identifier:1:3:32379:8
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.2km (0.8 miles) ⓘLower quarry, E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
1.3km (0.8 miles) ⓘE.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
1.3km (0.8 miles) ⓘPattuck Quarry, Alexandria, Grafton County, New Hampshire, USA
1.3km (0.8 miles) ⓘMiddle pegmatite, E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
1.5km (0.9 miles) ⓘBullock Quarry, E.E. Smith Mine, Alexandria, Grafton County, New Hampshire, USA
1.9km (1.2 miles) ⓘNew Haven Mica Quarry, Alexandria, Grafton County, New Hampshire, USA
3.4km (2.1 miles) ⓘWadhams-Tucker Quarry, Alexandria, Grafton County, New Hampshire, USA
4.3km (2.7 miles) ⓘItaska mine, Alexandria, Grafton County, New Hampshire, USA
4.5km (2.8 miles) ⓘMonarch Quarry, Alexandria, Grafton County, New Hampshire, USA
4.8km (3.0 miles) ⓘMelvin Mountain, Grafton, 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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