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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Bournonite from
Swanpool Mine, Falmouth, Cornwall, England, UK


Locality type:Mine
Classification
Species:Bournonite
Formula:PbCuSbS3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bournonite data
Locality Data:Click here to view Swanpool Mine, Falmouth, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:2268
Long-form Identifier:1:3:2268:2
GUID (UUID V4):0
Nearest other occurrences of Bournonite
1.0km (0.6 miles) ⓘNewporth Beach, Falmouth, Cornwall, England, UK
4.9km (3.0 miles) ⓘWheal Anna Maria (Budock Vean Mine; Pedenpoll Mine), Mawnan, Cornwall, England, UK
43.4km (26.9 miles) ⓘCredis Mine (Cridis Mine; Criddis Mine), Padstow, Cornwall, England, UK
43.8km (27.2 miles) ⓘTreveglos Mine (Wheal Friendship), Trevorgus and Treveglos Mines, St Merryn, Cornwall, England, UK
50.2km (31.2 miles) ⓘHerodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
52.6km (32.7 miles) ⓘTresungers Mine (Rose Mine; Wheal Arthur), Port Isaac, St Endellion, Cornwall, England, UK
52.8km (32.8 miles) ⓘWheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Cornwall, England, UK
53.5km (33.2 miles) ⓘTreore Mine, St Endellion, Cornwall, England, UK
53.7km (33.3 miles) ⓘPengenna Mine, St Kew, Cornwall, England, UK
54.7km (34.0 miles) ⓘBounds Cliff, St Endellion, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
 
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