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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Cyclopeit

A synonym of Anorthite
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Formula:
Ca(Al2Si2O8)
German synonym of:
A report of a meeting of the Naturwissenschaftliche Section of the Schlesischen Gesellschaft für Vaterländische Cultur, held February 4th of 1879, and written by Staatsrath Prof. Dr. Adolph Eduard Grube and Geheimer Bergrath Prof. Dr. Carl Ferdinand von Römer, mentions the following:

Sitzung der Naturwissenschaftliche Section, den 4 Februar... [snip] Herr Professor Dr von Lasaulx [snip] ...
Der Vortragende sprach sodann über die Krystallformen des als Cyclopeit bekannten Anorthitvorkommens aus dem Dolerit der cyclopischen Inseln bei Trezza in Sicilien.
(Meeting of the Natural Science Section, February 4th... [snip] Professor Dr von Lasaulx [snip] ...
The lecturer then spoke about the crystalline forms of the anorthite deposit known as cyclopeite from the dolerite of the Cyclopic Islands near Trezza in Sicily.)




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Unique IdentifiersHide

Mindat ID:
22159 (as Cyclopeit)
246 (as Anorthite)
Long-form identifier:
mindat:1:1:22159:3 (as Cyclopeit)
mindat:1:1:246:6 (as Anorthite)

Similar NamesHide

CyclopeitaA synonym of Ilvaite
CyclopéiteA synonym of DiopsideCaMgSi2O6

Internet Links for CyclopeitHide

References for CyclopeitHide

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