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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Bismutite from
Penberthy Croft Mine, St Hilary, Cornwall, England, UK


01770910017271998518224.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
03696740017271998689606.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01551930017271998696705.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
09233390017364166031905.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01770910017271998518224.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
03696740017271998689606.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01551930017271998696705.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
09233390017364166031905.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01770910017271998518224.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
03696740017271998689606.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01551930017271998696705.jpg
Bismutite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01055180017364166041377.jpg
Bismutite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Bismutite
Formula:(BiO)2CO3
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
SEM-WDS
Associated Minerals Based on Photo Data:
Quartz12
Native Bismuth4
Brochantite4
Anglesite3
Chlorite Group3
Cassiterite2
Goethite2
Clinochlore2
Erythrite2
Atelestite2
Chalcopyrite2
Mimetite1
Carminite1
Posnjakite1
Native Copper1
Alunite Group1
Kësterite1
Galena1
Cobaltite1
Ankerite1
Bismuthinite1
Tavagnascoite1
Perite1
Data
Mineral Data:Click here to view Bismutite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Photo GalleryView Gallery (11 photos)
Data Identifiers
Mindat Occurrence Record ID:2092
Long-form Identifier:1:3:2092:3
GUID (UUID V4):0
Nearest other occurrences of Bismutite
1.7km (1.0 miles) ⓘHalamanning Mine, St Hilary, Cornwall, England, UK
2.2km (1.4 miles) ⓘTregurtha Downs Mine, St Hilary, Cornwall, England, UK
13.9km (8.6 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
15.5km (9.6 miles) ⓘWheal Basset, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
18.7km (11.6 miles) ⓘLevant Mine, Trewellard, St Just, Cornwall, England, UK
18.9km (11.7 miles) ⓘWheal Owles, Botallack, St Just, Cornwall, England, UK
19.3km (12.0 miles) ⓘWheal Edward, Botallack, St Just, Cornwall, England, UK
22.8km (14.2 miles) ⓘWheal Coates, St Agnes, Cornwall, England, UK
44.6km (27.7 miles) ⓘWheal Remfry China Clay Pit, Fraddon, St Enoder, Cornwall, England, UK
51.9km (32.2 miles) ⓘCornubia Mine (Roche Rock Mine; Cost-all-Lost Mine), Carbis, Roche, Cornwall, England, UK
References
Rust, S. A. (1995) Bismutite from Penberthy Croft Mine, St. Hilary, Cornwall. UK Journal of Mines and Minerals 15, 18
 
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