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


09590230017572597887351.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
02465350017691884282875.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00371640017366126485376.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00103110017576812127487.jpg
Stannite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
03196640017572597811984.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
02465350017691884282875.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
08960710017577734679679.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00550980017577734688159.jpg
Stannite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07076860017572807226147.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00902910017691967649127.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00371640017366126485376.jpg
Stannite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
04021920017577734696670.jpg
Stannite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Stannite
Formula:Cu2FeSnS4
Formation:Primary
Comments:Needs further verification. Stannite-Ferrokesterite has been partly confirmed but not which dimorph Martin Stevko (2024). The original method of verification was not stated in Camm & Merry (1991).
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-WDS
Confirmation Details:Where Tested and Reference ID: SEM-WDS. Martin Stevko, Slovakia.
Associated Minerals Based on Photo Data:
Chalcopyrite3
Quartz2
Data
Mineral Data:Click here to view Stannite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:10472
Long-form Identifier:1:3:10472:2
GUID (UUID V4):0
Nearest other occurrences of Stannite
3.7km (2.3 miles) ⓘWest Wheal Providence, Fraddam, Gwinear-Gwithian, Cornwall, England, UK
4.2km (2.6 miles) ⓘWheal Darlington (Bog Mine; incl. East Wheal Darlington), Marazion Marsh, Ludgvan, Cornwall, England, UK
9.8km (6.1 miles) ⓘPenlee Quarry, Newlyn, Penzance, Cornwall, England, UK
13.2km (8.2 miles) ⓘNew Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK
13.9km (8.6 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
14.9km (9.2 miles) ⓘCarn Brea Mine, Pool, Carn Brea, Cornwall, England, UK
14.9km (9.3 miles) ⓘEast Pool Mine, Pool, Carn Brea, Cornwall, England, UK
15.1km (9.4 miles) ⓘWheal Agar, Pool, Carn Brea, Cornwall, England, UK
15.5km (9.6 miles) ⓘWheal Druid, Carn Brea Mine, Pool, Carn Brea, Cornwall, England, UK
19.0km (11.8 miles) ⓘBotallack Mine, Botallack, St Just, Cornwall, England, UK
References
Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines and Minerals 20, Rockbottom Publications. 7-37
Moulding, D., Hooper, J., Green, D. I. (2008) Stolzite from Penberthy Croft Mine, St Hilary, Cornwall. Journal of the Russell Society, 11. The Russell Society . 88-90
 
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