ptilolite

English

Etymology

A classical compound of ptilo- +‎ -lite, so named on account of its feather-like, threaded appearance.

Noun

ptilolite (plural ptilolites)

(mineralogy, outdated) Mordenite; once designated as a new mineral, it was discovered to be identical with mordenite. [1]

References

“Article XIII.--New Occurrence of Ptilolite”, in The American Journal of Science‎, volume 44, issue 260, New Haven, CT: Tuttle, Morehouse & Taylor, 1892, page 101: “Both ptilolite and mordenite become simply representable by the same general formula Al₂(Si₂O₅)₅R'₄+nAq.”

Further reading

“ptilolite”, in Mindat.org – Glossary‎, Hudson Institute of Mineralogy, 2000–2023.

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