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
Megiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK


Locality type:Outcrop
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 Megiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:11088
Long-form Identifier:1:3:11088:4
GUID (UUID V4):0
Nearest other occurrences of Topaz
2.9km (1.8 miles) ⓘGreat Wheal Fortune, Breage, Cornwall, England, UK
10.9km (6.8 miles) ⓘWheal Enys (Wheal Vernon), Porkellis, Wendron, Cornwall, England, UK
13.1km (8.1 miles) ⓘWheal Lucy (Riviere Mine), Hayle, Cornwall, England, UK
15.1km (9.4 miles) ⓘKnill Quarry, St Ives, Cornwall, England, UK
15.8km (9.8 miles) ⓘLamorna Cove, St Buryan, Cornwall, England, UK
25.5km (15.9 miles) ⓘBoswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK
26.2km (16.3 miles) ⓘBeacon Quarry, St Agnes, Cornwall, England, UK
26.5km (16.4 miles) ⓘTrevaunance Mine (Wheal Trevaunance), St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
26.5km (16.5 miles) ⓘWheal Kine (Wheal Kind), St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
26.6km (16.6 miles) ⓘSeal Hole Mine, St Agnes Consols (Polberro Consols), St Agnes, Cornwall, England, UK
References
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
George, M. C., Stone, M., Fejer, E. E., Symes, R.F. (1981) Triplite from the Megiliggar Rocks, Cornwall. Mineralogical Magazine, 44 (334) 236-238 doi:10.1180/minmag.1981.044.334.20
 
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