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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Kentrolite from
Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK


06245030017754981266299.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
01835310017271924231336.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
02054800017271924276957.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
09048990017271999184109.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
02367280017754626164221.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
04121510017370598134513.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
05653080017370598136561.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
09459780017370598132650.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
06245030017754981266299.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
01835310017271924231336.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
02054800017271924276957.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
09048990017271999184109.jpg
Kentrolite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
Locality type:Quarry
Classification
Species:Kentrolite
Formula:Pb2Mn23+(Si2O7)O2
Comments:Recently (October 2006) identified from manganese pods found on benches F and G at the southwestern end of the quarry. Locally present in some quantity, with exceptional xls up to 5mm in length.
Habit:Blades and plates in matrix; sometimes as equant to elongated bladed xls in cavities.
Colour:black with a reddish internal tint; sometimes dark brown
Luminescent properties:none
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calcite2
Cerussite1
Data
Mineral Data:Click here to view Kentrolite data
Locality Data:Click here to view Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
Photo GalleryView Gallery (7 photos)
Data Identifiers
Mindat Occurrence Record ID:423482
Long-form Identifier:1:3:423482:1
GUID (UUID V4):0
Nearest other occurrences of Kentrolite
3.2km (2.0 miles) ⓘColemans Quarry, Nunney, Mendip, Somerset, England, UK
16.6km (10.3 miles) ⓘHigher Pitts Mine, Priddy, Mendip, Somerset, England, UK
References
Turner, R. (2006) A mechanism for the formation of the mineralized Mn deposits at Merehead Quarry, Cranmore, Somerset, England. Mineralogical Magazine, 70 (6) 629-653 doi:10.1180/0026461067060359
Turner R.W. and Rumsey, M.S. (2007) Merehead Mineralogy - an Update. Russell Soc Newsletter, No 50, pp 17-18 (March 2007)
Turner, Rick, Rumsey, Michael S. (2010) The minerals of the Mendip Hills and their relationships. Journal of the Russell Society, 13. 3-46
 
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