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
Roche Rock, Trezaise (Tresayes), Roche, Cornwall, England, UK


00808400017366975539107.jpg
Schorl, etc.

Roche Rock, Trezaise, Roche, Cornwall, England, UK
00808400017366975539107.jpg
Schorl, etc.

Roche Rock, Trezaise, Roche, Cornwall, England, UK
00130910017360817745158.jpg
Schorl, etc.

Roche Rock, Trezaise, Roche, Cornwall, England, UK
Locality type:Rock Unit
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz1
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Roche Rock, Trezaise (Tresayes), Roche, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:9843
Long-form Identifier:1:3:9843:4
GUID (UUID V4):0
Nearest other occurrences of Schorl
1.5km (0.9 miles) ⓘGreat Wheal Prosper China Clay Pit, Trezaise (Tresayes), Roche, Cornwall, England, UK
1.7km (1.0 miles) ⓘNorth Goonbarrow China Clay Pit, Roche, Cornwall, England, UK
2.2km (1.4 miles) ⓘOld Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK
2.4km (1.5 miles) ⓘHensbarrow China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK
2.5km (1.5 miles) ⓘImperial Goonbarrow China Clay Works, Bugle, Treverbyn, Cornwall, England, UK
2.9km (1.8 miles) ⓘGunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK
3.0km (1.9 miles) ⓘDorothy China Clay Pit, Whitemoor, St Stephen-in-Brannel, Cornwall, England, UK
5.1km (3.1 miles) ⓘRostowrack China Clay Pit, Hendra Downs, St Dennis, Cornwall, England, UK
5.1km (3.2 miles) ⓘCastle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, Cornwall, England, UK
5.1km (3.2 miles) ⓘWest Carclaze Pit, Carludon, Treverbyn, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
 
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