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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Magnetite from
Trewen Quarry, South Petherwin, Launceston, Cornwall, England, UK


Locality type:Quarry
Classification
Species:Magnetite
Formula:Fe2+Fe23+O4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnetite data
Locality Data:Click here to view Trewen Quarry, South Petherwin, Launceston, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:7275
Long-form Identifier:1:3:7275:5
GUID (UUID V4):0
Nearest other occurrences of Magnetite
3.8km (2.4 miles) ⓘWheal Truscott, St Stephens By Launceston Rural, Launceston, Cornwall, England, UK
4.7km (3.0 miles) ⓘPolyphant Quarry, South Petherwin, Launceston, Cornwall, England, UK
5.7km (3.6 miles) ⓘGreystone Quarry, Lezant, Cornwall, England, UK
7.3km (4.6 miles) ⓘTreburland Manganese Mine (Treburland manganese deposits), Altarnun, Cornwall, England, UK
26.5km (16.5 miles) ⓘBarras Nose, Tintagel, Cornwall, England, UK
29.2km (18.2 miles) ⓘRestormel Royal Iron Mine (Trinity Mine), Lostwithiel, Cornwall, England, UK
29.8km (18.5 miles) ⓘLanivet Consols (Tretoil Mine), Lanivet, Cornwall, England, UK
34.3km (21.3 miles) ⓘFowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath and Par, Cornwall, England, UK
38.7km (24.0 miles) ⓘTower Consols (Magnetic Iron Mine; incl. Wheal Click), Trezaise (Tresayes), Roche, Cornwall, England, UK
45.9km (28.5 miles) ⓘSt Austell Consols (incl. Wheal Hawkins), Downderry, St Stephen-in-Brannel, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
 
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