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
Wheal Betsy (North Wheal Friendship; Prince Arthur Consols), Mary Tavy, West Devon, Devon, England, UK


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Comments:May be confused with Lollingite
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Siderite2
Fluorapatite2
- var Carbonate-rich Fluorapatite2
Chalcopyrite1
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Wheal Betsy (North Wheal Friendship; Prince Arthur Consols), Mary Tavy, West Devon, Devon, England, UK
Data Identifiers
Mindat Occurrence Record ID:833490
Long-form Identifier:1:3:833490:9
GUID (UUID V4):0
Nearest other occurrences of Marcasite
13.8km (8.6 miles) ⓘHingston Down Quarry, Gunnislake, Calstock, Cornwall, England, UK
14.6km (9.1 miles) ⓘGreystone Quarry, Lezant, Cornwall, England, UK
17.8km (11.1 miles) ⓘHolmbush Mine, Callington United Mines (incl. Emmens United Mines), Stokeclimsland, Cornwall, England, UK
25.8km (16.1 miles) ⓘWheal Wrey, Wrey and Ludcott United Mines, St Ive, Cornwall, England, UK
27.2km (16.9 miles) ⓘTreburland Manganese Mine (Treburland manganese deposits), Altarnun, Cornwall, England, UK
28.5km (17.7 miles) ⓘWheal Mary Ann, Menheniot, Cornwall, England, UK
36.6km (22.7 miles) ⓘHerodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
46.8km (29.1 miles) ⓘTregardock Mine (Tregarget Mine), Treligga, St Teath, Cornwall, England, UK
49.6km (30.8 miles) ⓘFowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath and Par, Cornwall, England, UK
51.6km (32.1 miles) ⓘSt Catherines Tor, Hartland Quay, Hartland, Torridge, Devon, England, UK
References
S. Rust collection
 
and/or  
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