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Chalcocite from
Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Comments:Replacement of galena in association with oxidising primary copper species. Note that a metallic grey sulphide with conchoidal fracture has not been analytically confirmed and could be a related species such as djurleite or digenite (Rust, 2019).
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18300
Long-form Identifier:1:3:18300:2
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
10.9km (6.8 miles) ⓘLletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion, Wales, UK
11.2km (6.9 miles) ⓘLlechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
14.9km (9.2 miles) ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
15.0km (9.3 miles) ⓘCamdwrbach Mine (Cambrian South Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
16.9km (10.5 miles) ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
19.5km (12.1 miles) ⓘYstrad Einion Mine (Dolgoch Mine), Furnace, Ysgubor-y-coed, Ceredigion, Wales, UK
20.9km (13.0 miles) ⓘRhiwnant Mine, Rhayader, Powys, Wales, UK
21.8km (13.5 miles) ⓘCythfartha Mine, Penegoes, Powys, Wales, UK
21.9km (13.6 miles) ⓘDalrhiw, Rhayader, Powys, Wales, UK
22.0km (13.7 miles) ⓘNant Paradwys, Rhayader, Powys, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
Rust, Steve A. (2019) Minerals of the Frongoch Mine. Published by the author, 180 pages. ISBN 978-1-9162641-0-6.
 
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