gieseckite Min.
(ˈgiːsəkaɪt)
[Named by Stromeyer in 1819 after Sir Chas. Giesecke, who brought it from Greenland: see -ite.]
A variety of pinite, believed to be a pseudomorph after nephelite.
| 1821 R. Jameson Man. Min. 323 Gieseckite, Stromeyer, Sowerby. 1868 Dana Min. (ed. 5) 479 Gieseckite..In 6-sided prisms. |