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glaucophane
[ glaw-kuh-feyn ]
noun
- a sodium-rich monoclinic mineral of the amphibole family, usually metamorphic.
glaucophane
/ glou′kə-fān′ /
- A blue to grayish-blue or bluish-black monoclinic mineral of the amphibole group. Glaucophane occurs as fibrous prisms in schists (especially blueschists) formed by the regional metamorphism of sodium-rich rocks. Chemical formula: Na 2 (Mg,Fe) 3 Al 2 Si 8 O 22 (OH) 2 .
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Word History and Origins
Origin of glaucophane1
First recorded in 1840–50; glauco- + -phane ( def )
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Example Sentences
Other minerals which have been found in eclogites are bronzite, olivine and glaucophane.
From Project Gutenberg
Glaucophane rocks are widely spread.
From Project Gutenberg
These home-kept old boots were lovely in their way, hoary with mould running into the most exquisite tints of glaucophane and blue-grey, but it was a different way altogether from that of the wild boot.
From Project Gutenberg
G.L.I.S.—ah! "Glistering thro' deeps of glaucophane"—that's nothing.
From Project Gutenberg
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