tuesiten.
/tjuːˈiːsʌɪt/ Mineralogy.
An indurated variety of lithomarge of a milk-white colour.
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the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > kandites > kaolinite > varieties
kaolin1728
nacrite1808
pholerite1826
gilbertite1830
tuesite1837
china-clay1840
teratolite1868
1837 Thomson in Hist. Berwickshire Naturalists' Club 1 No. 5. 157 Fracture earthy,..soiling the fingers;..tuesite and gypsum.
1868 J. D. Dana Syst. Mineral. (ed. 5) 474 Tuesite of Thomson is a lithomarge from Scotland, used sometimes for slate pencils;..color milk-white.
This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).
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n.1837