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
Palermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Fluorapatite1
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Palermo No. 2 Mine, Groton, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:50487
Long-form Identifier:1:3:50487:0
GUID (UUID V4):0
Nearest other occurrences of Schorl
0.3km (0.2 miles) ⓘPalermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
0.8km (0.5 miles) ⓘRice Quarry, Groton, Grafton County, New Hampshire, USA
1.4km (0.9 miles) ⓘCharles Davis Mine, Groton, Grafton County, New Hampshire, USA
6.9km (4.3 miles) ⓘKeniston mica prospect, Rumney, Grafton County, New Hampshire, USA
7.2km (4.4 miles) ⓘAtwood Mine, Rumney, Grafton County, New Hampshire, USA
7.7km (4.8 miles) ⓘKeyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
7.7km (4.8 miles) ⓘNo. 1 pit, Keyes Mica Quarries, Orange, Grafton County, New Hampshire, USA
7.9km (4.9 miles) ⓘBelden Mine, Rumney, Grafton County, New Hampshire, USA
7.9km (4.9 miles) ⓘLeggett mica prospect, Rumney, Grafton County, New Hampshire, USA
9.3km (5.8 miles) ⓘMcGinnis Mine (McGinnis Mica Mine; Wilcher and Pilsbury Mine), Wentworth, 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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