ottrelite Min.
(ˈɒtrəlaɪt)
[Named after Ottrez, in Belgium, where found: see -lite.]
† 1. An obsolete synonym of diallage. (So named by Wolff of Spa, 1812.)
2. A hydrous silicate of aluminium, iron, and manganese, found in greyish to black crystalline scales. (So named by Damour, 1842.)
| 1844 Dana Min. 529 Ottrelite..scratches glass with difficulty. 1879 Rutley Stud. Rocks x. 132. |