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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Ankerite from
Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK


Locality type:Mine
Classification
Species:Ankerite
Formula:Ca(Fe2+,Mg)(CO3)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Galena1
Quartz1
Data
Mineral Data:Click here to view Ankerite data
Locality Data:Click here to view Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:751
Long-form Identifier:1:3:751:7
GUID (UUID V4):0
Nearest other occurrences of Ankerite
22.2km (13.8 miles) ⓘTrebullet Mine, Lezant, Cornwall, England, UK
22.7km (14.1 miles) ⓘTolpetherwin Mine, South Petherwin, Launceston, Cornwall, England, UK
25.0km (15.5 miles) ⓘPengenna Mine, St Kew, Cornwall, England, UK
25.1km (15.6 miles) ⓘOld Treburgett Mine, St Teath, Cornwall, England, UK
25.5km (15.9 miles) ⓘGreystone Quarry, Lezant, Cornwall, England, UK
27.7km (17.2 miles) ⓘTrevinnick Mine, St Kew, Cornwall, England, UK
27.8km (17.2 miles) ⓘPoltreworgey Mine, St Endellion, Cornwall, England, UK
27.8km (17.3 miles) ⓘTreore Mine, St Endellion, Cornwall, England, UK
28.5km (17.7 miles) ⓘBounds Cliff, St Endellion, Cornwall, England, UK
28.5km (17.7 miles) ⓘBarrett 's Zawn, St Teath, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
Starkey, Roy (2012) The Herodsfoot mine, Lanreath, Cornwall, England. The Mineralogical Record, 43 (4) 411-486
 
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