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Serpentine. 15 y the above colours occur, but alfo black, and more rarely the fcarlet red, crimfon red, and ca- nary green. It is almoft always found man amorphous inde pendent ftate, feldom diffeminated, and inherent. Luftre, o. Tranfparency, 1.0. Fradture, fine, or coarfe fplintery, which fome« times pafs into the uneven of a fine grain. Fragments, between a and 3. Hardnefs from 6to 7. Somewhat brittle. Sp. gr. according to ßriffon, reaches, before it is pene- trated with water, from 2,2645 to 2,709. It is only thofe whofe fpec. gravity is beneath a,6 that admit water. He indeed mentions one which he fays is fibrous and femitranfparent, whofe fp. gr. is 2,9997; but this cannot be a ferpentine, as nei- therof the three charaders belong to it j nor do I believe that of Dauphine, which he fays is femi tranfparent, to be a ferpentine, but rather an indu- rated fteatites. The fp. gr. of the dark reddifh brown ferpentine of Zoblitz, Lefke 0.1137, to which aftnall quantity of talcite adheres, I found to be 2,561 and that of the dark blackilh green, alfo of Zoblitz, Lefke O. 1130, to which alfo fome talcite adheres, 2,574. Moft give an earthy fmcll when breathed on. It feels rather foft, almoft greafy. Moft ferpentines uifcover in their fra&ure yel- lowifh or canary green fcales, particularly thofe that otherwife refemble trap. See Lefke G. 318. 319. 321. Thcfe alfo often contain garnets, which trap never does. It is diflinguifliabie from indu- rated fteatites by its opacity, colour, hardnefs, feel, and general ly by its fp. gr. By reafon of its earthy fmell, I fulped: it has often been miftaken for trap, from which it differs moft widely. When