piedmontite Min.
(ˈpiːdmɒntaɪt, ˈpjeːm-)
[Alteration (by J. D. Dana) of G. piemontit: see piemontite.]
= piemontite.
| 1854 Dana Min. Index, Piedmontite. 1894 Min. Mag. X. 261 In the rhyolites the manganese-epidote, Piedmontite, is widely distributed. 1933 Mineral. Mag. XXIII. 417 The pleochroic colours shown by the mineral in thin section closely resemble those of piedmontite from Japan and from South Mountain, Pennsylvania. 1961 Current Sci. XXX. 223/1 (heading) Some observations on piedmontite from Goldongri Manganese Mine. |