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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Chalcopyrite from
Clogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK


07750750017272016703891.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
01693370017375028453995.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
03552580017375028446457.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
08571840017375028451882.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
05341950017375028462727.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
01693370017375028453995.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
03552580017375028446457.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
08571840017375028451882.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
07750750017272016703891.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
07584350017375028472553.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
01413850017375028476490.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
05224260017375028484306.jpg
Chalcopyrite, etc.

Clogau St Davids Mine, Llanelltyd, Gwynedd, Wales, UK
Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Chlorite Group4
Quartz4
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Clogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18502
Long-form Identifier:1:3:18502:8
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.3km (0.8 miles) ⓘVigra Mine, Llanelltyd, Gwynedd, Wales, UK
1.6km (1.0 miles) ⓘGarthgell Mine, Llanelltyd, Gwynedd, Wales, UK
2.1km (1.3 miles) ⓘGraigwen Mine (Nant-Goch Mine), Barmouth, Gwynedd, Wales, UK
2.4km (1.5 miles) ⓘBryn Castell Mine, Llanelltyd, Gwynedd, Wales, UK
3.3km (2.0 miles) ⓘMoel Ispri, Llanelltyd, Gwynedd, Wales, UK
5.7km (3.5 miles) ⓘCefn Coch Mine (incl. Berthlwyd Mine; New California Mine), Ganllwyd, Gwynedd, Wales, UK
5.8km (3.6 miles) ⓘPanorama Mine (Belle View Mine), Barmouth, Gwynedd, Wales, UK
5.8km (3.6 miles) ⓘCae Mawr Mine, Ganllwyd, Gwynedd, Wales, UK
7.1km (4.4 miles) ⓘGlasdir Mine, Brithdir and Llanfachreth, Gwynedd, Wales, UK
7.1km (4.4 miles) ⓘDripping Well, Barmouth, Gwynedd, Wales, UK
References
Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 635-642
Cook, Nigel J., Ciobanu, Cristiana L., Yao, Jie, Stanley, Christopher J., Liu, Wenyuan, Slattery, Ashley, Wade, Benjamin (2024) Clogauite, PbBi4Te4S3, a new member of the aleksite series. Mineralogical Magazine, 88 (4). doi:10.1180/mgm.2024.46
 
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