BIOTITE

biotite

(noun) dark brown to black mica found in igneous and metamorphic rock

Source: WordNet® 3.1


Etymology

Noun

biotite (countable and uncountable, plural biotites)

(mineral) A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

Source: Wiktionary


Bi"o*tite, n. Etym: [From Biot, a French naturalist.] (Min.)

Definition: Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

26 December 2024

CHATTEL

(noun) personal as opposed to real property; any tangible movable property (furniture or domestic animals or a car etc)


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Coffee Trivia

Some 16th-century Italian clergymen tried to ban coffee because they believed it to be “satanic.” However, Pope Clement VII loved coffee so much that he lifted the ban and had coffee baptized in 1600.

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