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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Quartz from
Atwood Mine, Rumney, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Atwood Mine, Rumney, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:653535
Long-form Identifier:1:3:653535:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.0km (0.6 miles) ⓘLeggett mica prospect, Rumney, Grafton County, New Hampshire, USA
1.1km (0.7 miles) ⓘBelden Mine, Rumney, Grafton County, New Hampshire, USA
2.0km (1.2 miles) ⓘWheat Mine, Rumney, Grafton County, New Hampshire, USA
2.7km (1.7 miles) ⓘKeniston mica prospect, Rumney, Grafton County, New Hampshire, USA
3.8km (2.4 miles) ⓘEight-Ball Mica prospect, Rumney, Grafton County, New Hampshire, USA
4.2km (2.6 miles) ⓘMcGinnis Mine (McGinnis Mica Mine; Wilcher and Pilsbury Mine), Wentworth, Grafton County, New Hampshire, USA
4.4km (2.7 miles) ⓘNew Gove prospect, Wentworth, Grafton County, New Hampshire, USA
5.2km (3.2 miles) ⓘBrown Mine, Wentworth, Grafton County, New Hampshire, USA
5.8km (3.6 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
7.2km (4.4 miles) ⓘPalermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
References
USGS Professional Paper 255: 145-147.
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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