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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Cumengeite from
Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK


02903220017272285812543.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
00941310017648762436084.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
06655080017648762432106.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
02903220017272285812543.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
02221600017648651428494.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
02384460017648667562942.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
02903220017272285812543.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
00941310017648762436084.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
06655080017648762432106.jpg
Cumengeite

Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
Locality type:Slag Locality
Classification
Species:Cumengeite
Formula:Pb21Cu20Cl42(OH)40 · 6H2O
Formation:Post-mining/Anthropogenic
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Mammothite1
Data
Mineral Data:Click here to view Cumengeite data
Locality Data:Click here to view Penpol smelter slag locality, Penpol, Feock, Cornwall, England, UK
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:546912
Long-form Identifier:1:3:546912:3
GUID (UUID V4):0
Nearest other occurrences of Cumengeite
8.6km (5.3 miles) ⓘNewporth Beach, Falmouth, Cornwall, England, UK
16.8km (10.4 miles) ⓘWheal Droskyn, Perran St George and Droskyn Mines, Perranporth, Perranzabuloe, Cornwall, England, UK
22.5km (14.0 miles) ⓘThe Gannel Smelter slag locality, Crantock, Cornwall, England, UK
23.2km (14.4 miles) ⓘGreat Western Beach, Newquay, Cornwall, England, UK
23.3km (14.5 miles) ⓘTolcarne Beach, Newquay, Cornwall, England, UK
24.6km (15.3 miles) ⓘFlory Island, Trevelgue, Newquay, Cornwall, England, UK
30.2km (18.8 miles) ⓘPar Smelter (Slag Locality), Tywardreath and Par, Cornwall, England, UK
39.1km (24.3 miles) ⓘSouthern Merop Island, Gunver Head, Padstow, Cornwall, England, UK
39.2km (24.4 miles) ⓘCuddrabridge Mine (Guddrabridge Mine; Padstow Consols; Trevone Consols; Wheal Galway), Gunver Head, Padstow, Cornwall, England, UK
40.6km (25.2 miles) ⓘDaymer Bay, Trebetherick, St Minver, Cornwall, England, UK
References
Sorrell, Steve (n.d.) Personal communication.
 
and/or  
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