Min. [Named 1866, after Prof. J. P. Cooke of Harvard: see -ITE.] A variety of lithium mica, in color white to yellowish green, occurring in minute scales, and in slender six-sided prisms.
1866. Amer. Jrnl. Sc., Ser. II. XLI. 246. On cookeite, a new mineral species.
1868. Dana, Min., 489. Cookeite … Occurs with tourmaline and lepidolite at Hebron and Paris, Maine.
