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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Melilite Group from
Scawt Hill, Larne, County Antrim, Northern Ireland, UK


Locality type:Volcanic Plug
Classification
Species:'Melilite Group' (not an IMA approved species)
Formula:Ca2M(XSiO7)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Melilite Group data
Locality Data:Click here to view Scawt Hill, Larne, County Antrim, Northern Ireland, UK
Data Identifiers
Mindat Occurrence Record ID:150281
Long-form Identifier:1:3:150281:7
GUID (UUID V4):0
Nearest other occurrences of Melilite Group
14.0km (8.7 miles) ⓘCarneal, Glenoe, Larne, County Antrim, Northern Ireland, UK
References
Tilley, C. E. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine and Journal of the Mineralogical Society, 22 (128) 222-224 doi:10.1180/minmag.1930.022.128.03
Tilley, C. E. (1942) Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim (With Plate V) Mineralogical Magazine and Journal of the Mineralogical Society, 26 (176) 190-196 doi:10.1180/minmag.1942.026.176.06
Fleischer, M. (1948) New mineral names. American Mineralogist: 33: 786-787.
Harker, R. I. (1965) Scawtite and its synthesis. Mineralogical Magazine and Journal of the Mineralogical Society, 34 (268). 232-236 doi:10.1180/minmag.1965.034.268.18
 
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