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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Topaz from
Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK


Locality type:Quarry
Classification
Species:Topaz
Formula:Al2(SiO4)(F,OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Topaz data
Locality Data:Click here to view Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:13732
Long-form Identifier:1:3:13732:2
GUID (UUID V4):0
Nearest other occurrences of Topaz
64.6km (40.1 miles) ⓘOld Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK
64.8km (40.3 miles) ⓘNorth Goonbarrow China Clay Pit, Roche, Cornwall, England, UK
65.1km (40.5 miles) ⓘGoonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK
65.8km (40.9 miles) ⓘHigher Ninestones China Clay Pit, Carbean, Treverbyn, Cornwall, England, UK
65.9km (41.0 miles) ⓘGunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK
66.2km (41.1 miles) ⓘBelowda Beacon, Belowda, Roche, Cornwall, England, UK
66.5km (41.3 miles) ⓘBelowda China Clay Pit, Belowda, Roche, Cornwall, England, UK
68.2km (42.3 miles) ⓘVC Quarry, Isle of Lundy, Torridge, Devon, England, UK
68.5km (42.6 miles) ⓘCastle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, Cornwall, England, UK
72.6km (45.1 miles) ⓘWheal Remfry China Clay Pit, Fraddon, St Enoder, Cornwall, England, UK
References
Worth, R.H. (1920) The Geology of the Meldon Valleys near Okehampton, on the Northern Verge of Dartmoor. Quarterly Journal of the Geological Society of London 75, 77-114.
McLintock, W. F. P. (1923) On the occurrence of petalite and pneumatolytic apatite in the Meldon aplite, Okehampton, Devonshire. Mineralogical Magazine and Journal of the Mineralogical Society, 20 (103). 140-150 doi:10.1180/minmag.1923.020.103.03
Nawaz Chaudhry, M., Howie, R. A. (1970) Topaz from the Meldon aplite, Devonshire. Mineralogical Magazine, 37 (290) 717-720 doi:10.1180/minmag.1970.037.290.10
Knorring, Oleg von, Condliffe, Eric (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48 (348) 443-448 doi:10.1180/minmag.1984.048.348.16
johnblanchard.net (2021) http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi
 
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