AMPHIBOLE

amphibole

(noun) a mineral or mineral variety belonging to the amphibole group

Source: WordNet® 3.1


Etymology

Noun

amphibole (plural amphiboles)

(mineral) Any of a large group of structurally similar hydrated double silicate minerals, containing various combinations of sodium, calcium, magnesium, iron, and aluminium/aluminum

Source: Wiktionary


Am"phi*bole, n. Etym: [Gr. amphibole. HaĆ¼y so named the genus from the great variety of color and composition assumed by the mineral.] (Min.)

Definition: A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constituent of many crystalline rocks, as syenite, diorite, most varieties of trachyte, etc. See Hornblende.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

29 November 2024

POPULATED

(adjective) furnished with inhabitants; ā€œthe area is well populatedā€; ā€œforests populated with all kinds of wild lifeā€


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Coffee Trivia

According to Guinness World Records, on 25 September 2016, the Birla Institute of Management Technology (India) in Uttar Pradesh, India, constructed the largest coffee cups pyramid consisting of 23,821 cups. They used paper takeaway coffee cups to build the pyramid.

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