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
Outback prospect (Gross prospect), Greenwood, Oxford County, Maine, USA


Locality type:Prospect
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Outback prospect (Gross prospect), Greenwood, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:700358
Long-form Identifier:1:3:700358:5
GUID (UUID V4):0
Nearest other occurrences of Schorl
0.1km (0.1 miles) ⓘHayes Ledge Quarries (East and West), Greenwood, Oxford County, Maine, USA
0.2km (0.1 miles) ⓘMustonen Ledge prospect, Greenwood, Oxford County, Maine, USA
0.4km (0.2 miles) ⓘMorgan Quarry (Morgan Pit; Upper Noyes Mountain Quarry; Upper Harvard Quarry), Greenwood, Oxford County, Maine, USA
0.4km (0.3 miles) ⓘNoyes Mountain Quarry (Harvard Quarry), Greenwood, Oxford County, Maine, USA
0.7km (0.5 miles) ⓘHeikkinen Quarry, Greenwood, Oxford County, Maine, USA
0.9km (0.6 miles) ⓘWitt Hill Chrysoberyl locality, Greenwood, Oxford County, Maine, USA
1.1km (0.7 miles) ⓘWaisanen Quarry (Tamminen-Waisanen Quarry), Greenwood, Oxford County, Maine, USA
1.1km (0.7 miles) ⓘTamminen Quarry, Greenwood, Oxford County, Maine, USA
1.7km (1.0 miles) ⓘNubble Quarry, Greenwood, Oxford County, Maine, USA
1.9km (1.2 miles) ⓘPatch Mountain Beryl prospect, Greenwood, Oxford County, Maine, USA
References
King, Van (n.d.) Personal communcation.
 
and/or  
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