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collophane

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col⋅lo⋅phane

[kol-uh-feyn]
–noun Mineralogy.
a massive, cryptocrystalline variety of apatite that is the principal component of phosphate rock and fossil bone.
Also, col⋅loph⋅a⋅nite [kuh-lof-uh-nahyt, kol-uh-fuh-] .


Origin:
1915–20; < G Kollophan, equiv. to Gk koll(a) glue + -o- -o- + -phan -phane
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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