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


05124640017271998509895.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01472960017272044625136.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
06806070017271998525016.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
04747080017360818052098.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
08314210017372612921604.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
09107000017372612919630.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01794610017372612935693.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07787890017372612932671.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05124640017271998509895.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
01472960017272044625136.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00717020017271998676987.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
04747080017360818052098.jpg
Bismuthinite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Bismuthinite
Formula:Bi2S3
Habit:Acicular
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-EDS
SEM-WDS
Confirmation Details:Where Tested and Reference ID: University of Manchester, and Martin Stevko, Slovakia
Associated Minerals Based on Photo Data:
Native Bismuth11
Quartz8
Chalcopyrite7
Galena5
Cassiterite4
Chlorite Group4
Cobaltite4
Kësterite4
Zipserite3
Dolomite2
Clinochlore1
Sphalerite1
Atelestite1
Erythrite1
Bismutite1
Data
Mineral Data:Click here to view Bismuthinite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Photo GalleryView Gallery (6 photos)
Data Identifiers
Mindat Occurrence Record ID:20227
Long-form Identifier:1:3:20227:3
GUID (UUID V4):0
Nearest other occurrences of Bismuthinite
2.1km (1.3 miles) ⓘCroft Gothal Mine, St Hilary, Cornwall, England, UK
5.8km (3.6 miles) ⓘWheal Herland (Old Herland Mine; Manor Mine; North Wheal Herland), Rosewarne and Herland United Mines (Rosewarne and Herland Mine; incl. Wheal Fancy; Wheal Pleasure), Gwinear, Gwinear-Gwithian, Cornwall, England, UK
7.3km (4.5 miles) ⓘCrenver & Wheal Abraham (Abraham Consols; incl. Great Drym Consols), Crowan, Cornwall, England, UK
9.8km (6.1 miles) ⓘPenlee Quarry, Newlyn, Penzance, Cornwall, England, UK
11.8km (7.3 miles) ⓘSouth Tolcarne Mine, Beacon, Camborne, Cornwall, England, UK
12.6km (7.8 miles) ⓘGreat Condurrow Mine, Beacon, Camborne, Cornwall, England, UK
13.2km (8.2 miles) ⓘDolcoath Mine, Camborne, Cornwall, England, UK
13.9km (8.6 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
14.9km (9.3 miles) ⓘEast Pool Mine, Pool, Carn Brea, Cornwall, England, UK
16.2km (10.1 miles) ⓘWheal Uny, Redruth, Cornwall, England, UK
References
Betterton, J. (1998) Bismuthinite from Penberthy Croft Mine, Cornwall. UK Journal of Mines and Minerals 19, Rockbottom Publications. 11
Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines and Minerals 20, Rockbottom Publications. 7-37
 
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