| 释义 |
raspite Min.|ˈræspaɪt|
[ad. G. raspit (C. Hlawatsch 1897, in Ann. des K.K. Naturhist. Hofmuseums XII. 33), f. the name of Mr. Rasp, discoverer of the Broken Hill mines, New South Wales, where the first specimen was found: see -ite1.]
A lead tungstate, PbWO4, that is dimorphous with stolzite and occurs as brownish, yellow, or grey prismatic monoclinic crystals.
1898Mineral Mag. XII. 47 Raspite, a new dimorphous form of lead tungstate, is found on some of the stolzite specimens as brownish or yellow monoclinic crystals with a strong adamantine lustre. 1931J. W. Mellor Compreh. Treat. Inorg. & Theoret. Chem. XI. lxii. 793 Stolzite occurs in tetragonal crystals, raspite in monoclinic crystals. 1956Mineral Abstr. XIII. 30 Natural raspite transforms irreversibly to stolzite at about 400° C. 1968I. Kostov Mineralogy ii. viii. 486 Stolzite is uniaxial negative..; raspite biaxial positive. |