Anorthic
adjective
another word for triclinic
historical examples
the name anorthite was given to the vesuvian mineral by g. rose in 1823, on account of its anorthic crystallization.
encyclopaedia britannica, 11th edition, volume 2, slice 2 various
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a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of . anorthoclase (ān-ôr’thə-klās’) a white to colorless triclinic mineral of the alkali feldspar group. it is a common const-tuent in the matrices of slightly alkaline volcanic rocks. chemical formula: (na,k)alsi3o8.
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a granular plutonic rock composed largely of labradorite or a more calcic feldspar. historical examples in canada great portions of the eastern portion of the dominion are formed of gabbros, norite, anorthosite and allied rock types. encyclopaedia britannica, 11th edition, volume 11, slice 4 various noun a co-rs–grained plutonic igneous rock consisting almost entirely of […]
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