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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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Parisite-(Ce) from
Mont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy


Locality type:Mountain
Classification
Species:Parisite-(Ce)
Formula:CaCe2(CO3)3F2
Comments:Originally described as yellowish hexagonal crystals occurring in a crust, consisting of chlorite, stilbite, chabazite, fluorite, and pyrite, or perched on quartz crystals. On the basis of chemical and physical investigations, the mineral was classified as parisite (Tacconi, 1905). The material of the original description is no more available for modern investigations. According to Gramaccioli (1975), it should be attributable to synchysite-(Ce).

In Palache et al. (1951) the presence of parisite at Mont'Orfano is erroneously reported from veinlets in riebeckite-granite. Mont'Orfano granite does not contain riebeckite and, obviously, the name riebeckite does not appear in the original literature.
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals:
Associates:Riebeckite
Data
Mineral Data:Click here to view Parisite-(Ce) data
Locality Data:Click here to view Mont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
Data Identifiers
Mindat Occurrence Record ID:480648
Long-form Identifier:1:3:480648:6
GUID (UUID V4):0
Nearest other occurrences of Parisite-(Ce)
27.3km (16.9 miles) ⓘCrevoladossola Quarry, Crevoladossola, Verbano-Cusio-Ossola Province, Piedmont, Italy
47.7km (29.6 miles) ⓘFlesch lake, Binn, Goms, Valais, Switzerland
50.2km (31.2 miles) ⓘOxefeld, Albrunhorn - Turbhorn area, Binn, Goms, Valais, Switzerland
55.6km (34.5 miles) ⓘPiano dei Camosci (Pian dei Camosci), Formazza, Verbano-Cusio-Ossola Province, Piedmont, Italy
References
 
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