tuesite Min.
(tjuːˈiːsaɪt)
[f. L. Tuesa the Spey, mistaken by Camden for the Tweed + -ite1.]
An indurated variety of lithomarge of a milk-white colour.
| 1837 Thomson in Proc. Berw. Nat. Club I. No. 5. 157 Fracture earthy,..soiling the fingers;..tuesite and gypsum. 1868 Dana Min. (ed. 5) 474 Tuesite of Thomson is a lithomarge from Scotland, used sometimes for slate pencils;..color milk-white. |