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halloysite

[huh-loi-sahyt, -zahyt, ha-]
noun
  1. a refractory clay mineral similar in composition to kaolinite.
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Origin of halloysite

1820–30; after Jean-Baptiste-Julien Omalius d'Halloy (1783–1875), Belgian geologist; with -site for -ite1, after mineral names formed from surnames ending in s
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018