margarodite

noun

1. A hydrous potash mica related to muscovite.

   countable, obsolete, uncountable

   This optical peculiarity of the Breezy margarodite distinguishes it from the margarodite of the Leinster granite, in which the plane of the optical axes coincides with the long diagonal of the primary rhomb, joining its acute angles.

Where it comes from

Borrowed from German Margarodit (coined in 1843 by Dr. Carl Schaffhäutl), from Byzantine Greek μαργαρώδης (margarṓdēs, “pearl-like”), from Ancient Greek μάργαρον (márgaron, “pearl”); see μαργαρίτης (margarítēs).

Adapted from the Wiktionary entry margarodite (CC BY-SA 4.0).

← mareelmarginalia →

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