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collophane

[kol-uh-feyn] /ˈkɒl əˌfeɪn/
noun, Mineralogy
1.
a massive, cryptocrystalline variety of apatite that is the principal component of phosphate rock and fossil bone.
Also, collophanite
[kuh-lof-uh-nahyt, kol-uh-fuh-] /kəˈlɒf əˌnaɪt, ˈkɒl ə fə-/ (Show IPA)
.
Origin
1915-1920
1915-20; < German Kollophan, equivalent to Greek koll(a) glue + -o- -o- + -phan -phane
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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