pleochroic

[ plee-uh-kroh-ik ]

Phonetic (Standard)IPA

adjective

First recorded in 1860–65; pleo- + -chroic

Withamite is a carmine-red to straw-yellow, strongly pleochroic variety from Glencoe in Scotland.

The pleochroism is strong, the pleochroic colours being usually green, yellow and brown.

Though black by reflected light they are brown by transmitted light and highly pleochroic.

The descriptive name "Pleochroic Halo" has originated from this fact.

Hypersthene, when present, is often strikingly pleochroic in colours varying from pink to bright green.

April 23, 2024inveterate

[in-vet-er-it ]

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