χαλκῖτις

εως, ἡ
A. containing copper, λίθος χ. copper-ore, worked in Cyprus, Arist. HA 552b10; and in Euboea, Plu. 2.434a.
2. a mineral, rock-alum, Emp. ap. Gal. 15.32 (sed v. foreg.), Dsc. 5.99, POxy. 1088.19 (i A. D.), Sor. 2.41; χ. στυπτηρίη Hp. Ulc. 14; χ. κυανέη (of doubtful nature) ib.21.
II. = χρυσάνθεμον, Ps.-Dsc. 4.58.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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