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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Marcasite from
Llanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK


Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Llanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:87577
Long-form Identifier:1:3:87577:8
GUID (UUID V4):0
Nearest other occurrences of Marcasite
5.1km (3.2 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
11.4km (7.1 miles) ⓘLlest Colliery (Lluest Colliery), Pontyrhyl (Pont-y-rhyl), Bridgend, Wales, UK
12.9km (8.0 miles) ⓘPark Slip West (Margam Opencast), Cefn Cribwr, Bridgend, Wales, UK
14.7km (9.1 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
22.1km (13.8 miles) ⓘWyllie Colliery, Wyllie, Caerphilly, Wales, UK
25.2km (15.7 miles) ⓘGlyn Gwilym Isaf Opencast, Clyne and Melincourt, Neath Port Talbot, Wales, UK
28.1km (17.5 miles) ⓘVaynor Quarry, Trefechan, Merthyr Tydfil, Wales, UK
36.9km (22.9 miles) ⓘBig Pit (Colliery), Blaenavon, Torfaen, Wales, UK
41.5km (25.8 miles) ⓘCliff exposures and Wave platforms, Pwll Du Head, Pennard, Swansea, Wales, UK
42.4km (26.4 miles) ⓘClevedon Beach, Clevedon, North Somerset, England, UK
References
 
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