hyalotekite

noun

hy·​a·​lo·​te·​kite

ˌhīəlōˈtēˌkīt

plural -s

: a mineral approximately (Pb,Ca,Ba)₄BSi₆O₁₇(OH,F) consisting of a borosilicate and fluoride of lead, barium, and calcium found in crystalline masses

Word History

Etymology

Swedish hyalotekit, from hyal- + Greek tēkein to melt + Swedish -it -ite; from the fact that it fuses to a clear glass

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