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


06660450017363478591422.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
08427770017691890517457.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05834770017691890519683.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05644180017691773008293.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
06660450017363478591422.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
08665570017691778195607.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
09176740017691777258273.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00928440017691771845905.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07968810017367163323270.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05386080017691890526580.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
02515450017691890523365.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
04944780017691773843830.jpg
Fluorapatite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Fluorapatite
Formula:Ca5(PO4)3F
Comments:The fluorapatite was only confirmed by XRD, needs quantitative and probably Infrared spectroscopy to confirm it is not carbonate-rich fluorapatite.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Clinochlore5
Monazite-(Ce)4
Quartz4
Anatase3
Chlorite Group1
Data
Mineral Data:Click here to view Fluorapatite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:20230
Long-form Identifier:1:3:20230:7
GUID (UUID V4):0
Nearest other occurrences of Fluorapatite
5.0km (3.1 miles) ⓘTregonning Hill, Breage, Cornwall, England, UK
6.8km (4.2 miles) ⓘRinsey Cove, Rinsey, Breage, Cornwall, England, UK
7.7km (4.8 miles) ⓘMegiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK
10.9km (6.8 miles) ⓘWheal Pendarves, Killivose, Camborne, Cornwall, England, UK
14.1km (8.7 miles) ⓘTincroft Mine, Pool, Carn Brea, Cornwall, England, UK
15.6km (9.7 miles) ⓘSouth Wheal Basset, Carnkie, Carn Brea, Cornwall, England, UK
17.3km (10.7 miles) ⓘBoscaswell Downs Mine, Pendeen, St Just, Cornwall, England, UK
17.6km (10.9 miles) ⓘPendeen Consols, Pendeen, St Just, Cornwall, England, UK
17.7km (11.0 miles) ⓘMaen Quarry, Constantine, Cornwall, England, UK
17.9km (11.1 miles) ⓘTresavean Mine, Lanner, Lanner, 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
 
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