A glossary of mineralogy . Alchemists. RiTTiNGERiTE, Zippe. Probably a com-pound of sulphide of silver and antimony,and considered by Breithaupt to be iden-tical with Xanthocone. It occurs at Joa-chimsthal in Bohemia, in small rhombictables with replaced basal edges. Colouriron-black: of crystals brownish - black!Ti-anslucent, and varying from dull honey-yellow to hyacinth-red when ? viewed bytransmitted light, in the direction of theaxis. Lustre metallic-adamantine. Streakorange-yellow. Brittle. H. 1-5 to 3. Name. After Rittinger, an Austrianofficer of mines. RocHLAUDiTE. See Serpentine. Rock
A glossary of mineralogy . Alchemists. RiTTiNGERiTE, Zippe. Probably a com-pound of sulphide of silver and antimony,and considered by Breithaupt to be iden-tical with Xanthocone. It occurs at Joa-chimsthal in Bohemia, in small rhombictables with replaced basal edges. Colouriron-black: of crystals brownish - black!Ti-anslucent, and varying from dull honey-yellow to hyacinth-red when ? viewed bytransmitted light, in the direction of theaxis. Lustre metallic-adamantine. Streakorange-yellow. Brittle. H. 1-5 to 3. Name. After Rittinger, an Austrianofficer of mines. RocHLAUDiTE. See Serpentine. Rock Butter, Jameson. See Petro-leum. Rock Cork, Jameson. See MountainCork. Rock Crystal (from y.^va-raxxo?, ice).The common name for the transparentcrystals of Quartz, of which it is the purestform, being composed (according to ananalysis by Bucholz) of 99-37 per cent, ofsilica, with a trace of alumina. The following are some of the localitieswhere fine specimens of Rock Crystal arefound. — English. Cornwall; at the Tin-. Fig. 364 Fig. 365. tagel cliffs and Delabole slate quarries,(.^^s. 363 to 365), near Camelford; HuelMary Ann ; Mainporth, near Falmouth.^^ ; Carnbrea Mines, yellow; East CrinnisMines. Devonshire; Huel Friendship, nearTavistock; North Bovey, in large opaquereddish twins, Jig. 362. Gloucestershire,.figs. 363, 365, at Clifton; known as?•Bristol or ^British diamonds.^ Ulver-stone Iron Mines. Lancashire, ./^gr. 364. Der-byshire, at Castleton and Masson Low. 320 ROCK CRYSTAL. Cumberland; Carrock Fells. Caldbeck Fells,Alston, Cleator Moor Iron Mines, on Hema-tite.— Welsh. Snowdon, Caernarvonshire. —Scotch. Leadhills, in Lanarkshire. Tnthe neighbourhood of Cairngorm (whichsee). Argyleshire. Ballygroggan, Mull ofCantrre, in cavities of trap rock. — ,nearBelfast. Donegal. Downshire,in clefts and cavities of the Mourne Moun-tain-granite, with Topaz and Beryl. Pal-merston, yellow, Killarney, in yellow de-tached crystals. Castle Comei,^ Kilkenny.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectmineral, bookyear1861
