 | | Book (edition) | | MINERALOGY. 3. Minerals differ in hardness from the diamond at one end of the scale to soapstone at the other...other distorted crystals. Occasionally, as in the diamond, the planes of crystals are convex; and then, of...marked example is carbon, which is isometric in the diamond, but hexagonal in graphite: of extreme hardness...very soft and easily cut with a knife, to the diamond. This table, called the scale of hardness, is...variety; 8, topaz, transparent cr} scleavable diamond. tal; 9, sapphire, variety; 10, If, on drawing |  | | Book (edition) | | JMineralogv. ?}. Minerals differ in hardness from tlie diamond at oiu' end of the scale to soapstone at the other...lerals ^ iaUb.dtlon of if) L'he))i\r(d Proptriles of Mine nth ; (4) J lescrqjtions of Sj/6; cles j (o) JJeientiUiutloii...CRYSTALLIZATION. 29 Occasionally, as in the diamond, the planes of crystals are and then, of course...very soft and easily cut with a knife, to the diamond. This table, called the scale of JiardnesSy is...crystal ; 9, sapphire, cleavable variety ; 10 , diamond. If, on drawing a file across a mineral, it is |  | | Book | | in Locating and Recognizing Minerals INCLUDING FIELD IDENTIFICATION CHARTS by STERLING GLEASON, M...ultraviolet’s many uses in the field, the home laboratory, and the operating mine or mill. Ultraviolet light...cut to rapid min- eral identification. The seven Field Identification Charts—one for each color—enable...hand. These Field Charts cover the common fluorescent minerals one is likely to meet in field trips, including...into rough country. Pioneering in an uncharted field, he worked out circuitry, designed sturdy, light-weight |  | | Book (edition) | | Fig. 59. Commonly only the poles that lie in the northern hemisphere, including those on the equator, are...gives the indices 221 for the face. To deter 192. mine, by plotting, the axial ratio of an orthorhombic...light, or signal as it is called, should lie in the field. If the preliminary adjustments were accurate the...of calcite; in the lower ; 476 Calcite 476 Diamond Beryl which was in oscillatory compart traces...the faces convex. This the case in crystals of diamond (Fig. 476), some of which are almost spheres. The |  | | Journal (volume) | | '• Pyrite PY UK and Ireland: 0870 890 2730 Australia: (03) 9872 4000 New Zealand: (09) 308 2871 South...copy? Ring Customer Services UK: 0870 870 2575 Australia: (03) 9872 4000 New Zealand: (09) 308 2871 South...Mexico. Eight-sided crystals from the Traversella mine, Piedmont, Italy. .&. crystals. It can also be...language. Rubies are also found in the Chantabiri region of Thailand and around Pailin and Channop in Cambodia...ruby deposits are found in the Umba River valley, northern Tanzania , and in Magadi, Kenya. smaller quantities |  | | Book (edition) | | or brandy in rectified wormwood, star-anise, green anise seed, fennel, coriander, angelica root, or...Xanthorrhoea or black boy gum, from X. Australis of Australia. It is a red resin resembling dragon's blood,...Acetasem. and gelsemium extract. (857). Acetate, Green. A chromium pigment made from a chromium salt and...quite fluid by warm- used for uniting glass and Diamond cement, Hercules cechina. ment, and Giant cement...Chryseinic. See Campobello Acid , Acid Alizarin Green B, G. A dyestuff. It is the sodium salt of di-sulphydrotetraoxy |
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