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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Unnamed (Pb Silicate) ? from
Esgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK


Locality type:Mine
Classification
Species:'Unnamed (Pb Silicate) ?' (not an IMA approved species)
Formula:Pb, Si, O, H (?)
Habit:Lath-like divergent and dendritic crystal groups to 1mm
Colour:Colourless to mostly white
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Very Rare
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Unnamed (Pb Silicate) ? data
Locality Data:Click here to view Esgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:57131
Long-form Identifier:1:3:57131:3
GUID (UUID V4):0
Nearest other occurrences of Unnamed (Pb Silicate) ?
16.9km (10.5 miles) ⓘFrongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
References
S Rust collection, Nat Hist Museum London
 
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