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
Mustonen Ledge prospect, Greenwood, Oxford County, Maine, USA


Locality type:Prospect
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Comments:One well-terminated crystal 30 x 12 x 12 cm found by Matti Waisanen in the 1940's.
Quality for species:Good crystals or rich for species - important (!)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Mustonen Ledge prospect, Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:520403
Long-form Identifier:1:3:520403:8
GUID (UUID V4):0
Nearest other occurrences of Schorl
0.2km (0.1 miles) ⓘOutback prospect (Gross prospect), Greenwood, Oxford County, Maine, USA
0.3km (0.2 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
0.3km (0.2 miles) ⓘHayes Ledge Quarries (East and West), Greenwood, Oxford County, Maine, USA
0.4km (0.2 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
0.7km (0.4 miles) ⓘWitt Hill Chrysoberyl locality, Greenwood, Oxford County, Maine, USA
0.8km (0.5 miles) ⓘHeikkinen Quarry, Greenwood, Oxford County, Maine, USA
0.9km (0.6 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
1.0km (0.6 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
1.5km (0.9 miles) ⓘNubble Quarry, Greenwood, Oxford County, Maine, USA
1.9km (1.2 miles) ⓘPatch Mountain Beryl prospect, Greenwood, Oxford County, Maine, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
 
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