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allanite
[ al-uh-nahyt ]
noun
, Mineralogy.
- a member of the epidote group, a silicate of calcium, cerium, aluminum, and iron, occurring chiefly in brown-to-black masses or prismatic crystals.
allanite
/ ˈæləˌnaɪt /
noun
- a rare black or brown mineral consisting of the hydrated silicate of calcium, aluminium, iron, cerium, lanthanum, and other rare earth minerals. It occurs in granites and other igneous rocks. Formula: (Ca,Ce,La,Y) 2 (Al,Fe,Be,Mn,Mg) 3 (SiO 4 ) 3 (OH)
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Other Words From
- al·la·nit·ic [al-, uh, -, nit, -ik], adjective
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Word History and Origins
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Word History and Origins
Origin of allanite1
C19: named after T. Allan (1777–1833), English mineralogist
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