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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Dolomite from
Trewethen Mine, St Kew, Cornwall, England, UK


00632800017271997735800.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
05020390017371370676710.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
00632800017271997735800.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
01097970017370574114994.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
00632800017271997735800.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
05020390017371370676710.jpg
Dolomite, etc.

Trewethen Mine, St Kew, Cornwall, England, UK
Locality type:Mine
Classification
Species:Dolomite
Formula:CaMg(CO3)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Siderite3
Chalcopyrite1
Data
Mineral Data:Click here to view Dolomite data
Locality Data:Click here to view Trewethen Mine, St Kew, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:4655
Long-form Identifier:1:3:4655:8
GUID (UUID V4):0
Nearest other occurrences of Dolomite
3.6km (2.2 miles) ⓘBounds Cliff, St Endellion, Cornwall, England, UK
24.9km (15.5 miles) ⓘHerodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
25.3km (15.7 miles) ⓘMillook Beach, Poundstock, Cornwall, England, UK
27.3km (17.0 miles) ⓘWest Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Cornwall, England, UK
27.8km (17.3 miles) ⓘWheal Wrey, Wrey and Ludcott United Mines, St Ive, Cornwall, England, UK
28.6km (17.8 miles) ⓘPolgooth Mine (Old Polgooth Mine; Polgooth United Mine; Tregontrees and Old Polgooth Mine), Polgooth, St Mewan, Cornwall, England, UK
31.5km (19.6 miles) ⓘGreystone Quarry, Lezant, Cornwall, England, UK
33.9km (21.1 miles) ⓘWheal Mexico (Trebellan Mine; incl. Treworthy Mine), Perranzabuloe, Cornwall, England, UK
34.8km (21.6 miles) ⓘSouth Mount Mine (Crows-an-Carne Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK
35.6km (22.1 miles) ⓘGreat Chiverton Consols (East Wheal Elizabeth), St Allen, Cornwall, England, UK
References
 
and/or  
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