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


05430160017549192358086.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00705210017272007328827.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07393760017522915601506.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07356340017369447798915.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05430160017549192358086.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07980990017525580998966.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07597260017495909007977.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07356340017369447798915.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
05430160017549192358086.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
00705210017272007328827.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
07393760017522915601506.jpg
Segnitite, etc.

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
04691920017522986909567.jpg
Segnitite

Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Locality type:Mine
Classification
Species:Segnitite
Formula:PbFe33+AsO4(AsO3OH)(OH)6
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
SEM-EDS
Confirmation Details:Where Tested and Reference ID: NHM London XRD and SEM, and SEM-EDX Mineral Analytic, Germany.
Associated Minerals Based on Photo Data:
Mimetite12
Carminite6
Bayldonite6
Mawbyite4
Goethite4
Quartz2
Scorodite1
Pharmacosiderite1
Hidalgoite1
Data
Mineral Data:Click here to view Segnitite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Photo GalleryView Gallery (7 photos)
Data Identifiers
Mindat Occurrence Record ID:9927
Long-form Identifier:1:3:9927:1
GUID (UUID V4):0
Nearest other occurrences of Segnitite
11.5km (7.2 miles) ⓘWheal Pool, Helston, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
 
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