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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Schorl from
Standard Mine, Orange, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Standard Mine, Orange, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:103251
Long-form Identifier:1:3:103251:2
GUID (UUID V4):0
Nearest other occurrences of Schorl
2.9km (1.8 miles) ⓘHoyt Hill Quarry, Orange, Grafton County, New Hampshire, USA
3.8km (2.4 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
3.8km (2.4 miles) ⓘNo. 1 pit, Keyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
8.2km (5.1 miles) ⓘRuggles Mine, Grafton, Grafton County, New Hampshire, USA
8.6km (5.3 miles) ⓘTruman Patten Quarry, Alexandria, Grafton County, New Hampshire, USA
9.8km (6.1 miles) ⓘMarston Quarry, Alexandria, Grafton County, New Hampshire, USA
10.4km (6.5 miles) ⓘPattuck Quarry, Alexandria, Grafton County, New Hampshire, USA
10.7km (6.6 miles) ⓘRice Quarry, Groton, Grafton County, New Hampshire, USA
10.7km (6.7 miles) ⓘWadhams-Tucker Quarry, Alexandria, Grafton County, New Hampshire, USA
10.7km (6.7 miles) ⓘBullock Quarry, E.E. Smith Mine, 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
Nicolay & Stone (1967), Rocks & Minerals: A Guide For Collectors of the Eastern US, p.82
 
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