 | | Book | | affect the neighbouring calcite, changing it into gypsum or into a whole series of other sulphates. Opals...in its chemical composition. Rock salt, sylvine, gypsum, calcite and some iron ores, such as chamosite...soft, yielding environment, such as crystals of gypsum in soft clay. Crystals may also develop freely...180°) occur quite frequently, e.g. in cassiterite gypsum, and fluorite. In some cases the growth of twin...Twinned Crystals of (from left to right): fluorite, gypsum, cassiterite 17 grows columnar crystals of pseudo-hexagonal | | | Book | | affect the neighbouring calcite, changing it into gypsum or into a whole series of other sulphates. Opals...in its chemical composition. Rock salt, sylvine, gypsum, calcite and some iron ores, such as chamosite...Bj I I I 14 rhodonite axinite a II o gypsum wolframite ntanite augne orthoclase barytes...soft, yielding environment, such as crystals of gypsum in soft clay. Crystals may also develop freely...180°) occur quite frequently, e.g. in cassiterite gypsum, and fluorite. In some cases the growth of twin |  | | Book (volume) | | reserved. H., Hofbuchdruckerei, Cothen-Anhalt (Germany). PRECIOUS The Precious Stones. Precious...hollowed out The vacant. man form the on left Germany with to be have posture greater a window...find Kimberley. Colony The projected the Du mine, serpentine and and where absence beginnings...and depths therefore in rush the afterwards mine, completely brecciated and fragmented, to in...discovered at of Vaal Kimberley mine when steam magnesium silicate, mine, and water funnel all of |  | | Book (edition) | | edition of the work, aud to soeh additionB pre- on Mine- make to it as later discoveries might render...&ees of perfect desTage, as in benlandite, miea, gypsum, and other sumtances. It is senerallv seen in onlv...obtained by interposing between g and ii a lamina of gypsum or mica, of sueli thieknciiij that for a ray perpendicuhir...have isomorphous forms of the prismatic system. Gypsum daiif, sulphate of iron, with two equivalents of...I^semdamarpkous by the Additiam qfan IngredimU. Gypsum ill the iurm of Mica Talent mite 99 Antimony |  | | Book | | ; A light is reflected. The word crystal in mine Faces, edges, angles, axes of Crystals. ralogy designates...kingdom. Fig. 63 represents a very common form of gypsum crystals (ooPoo) (P) . co P(/) . P (/). The most...Mohs, i. fig. 180), in the lens-like crystals of gypsum, and in the curved faces so common on diamond...orthodiagonal chief section, as in this figure 93 of gypsum, P, shown in crystals of the combination ( ooPoo...combination ( ooPoo felspars. ) . coP . in gypsum, Two OP . cry- 2Poo , 65 above, are often |  | | Book | | examples of residual deposits are those of phosphates, gypsum, manganese and bauxite. Sometimes the leached substances...copper, vanadium, uranium, phosphates, borates, gypsum and magnesite. Both residual and infiltration deposits...salt), sylvite, carnallite, mirabilite, anhydrite, gypsum, borax, ulexite, pneumat olysis or pneumatolytic...proportion Rosiwa l 100 1000 10 000 100 000 talc gypsum calcite fluorite -- apatite orthoclase - --=====-------...crystals. For instance, a finely granular aggregate of gypsum compared with an isolated crystal can only be scratched | | | Book | | illustrated Encyclopedi of the World’s Rocks and Mine re L A R E N MI OF THE WORLD Rudolf Duda and...examples of residual deposits are those of phosphates, gypsum, manganese and bauxite. Sometimes the leached substances...copper, vanadium, uranium, phosphates, borates, gypsum and magnesite. Both residual and infiltration deposits...salt), sylvite, carnallite, mirabilite, anhydrite, gypsum, borax, ulexite, pneumatolysis or pneumatolytic...crystals. For instance, a finely granular aggregate of gypsum compared with an isolated crystal can only be scratched |  | | Book (volume) | | the Universities have founded Professorships of Mine¬ ralogy ; and that munificent and patriotic association...empire, the particular attention of naturalists to Mine¬ ralogy. Three years afterwards, an expression...this subject, and has been of infinite benefit to Mine¬ ralogy. Since the publication of the second and...author. Mr Thomas Allan’s treatise, entitled, “ Mine- “ ralogical Synonymes,” will be found useful to...Ausflihrliches und systematisebes Verzeichniss des Mine r.ilicn-kabinet des Pabst von Ohain, 2 vols. 8vo |  | | Book (volume) | | KIMBERLEY DIAMOND MINE IN 1872 . . 197 PLATE VIII. (Facing p. 202.) KIMBERLEY DIAMOND MINE IN 1874 . ,,...200 PLATE V. . . . (Facing p. 152.) DIAMOND MINE AT PANNA, INDIA . PLATE II. 78 . „ 341 cut... „ the same, cut ., pale yellow crystals : Saxony 3a. 4. ,, the same, cut . 331, 333 331 333...Section through the Kimberley mine 200 ,, 41. Section through the De Beer’s mine 201 ,, 42. Diamond-fields..... 50 Crystalline forms of diamond Kimberley mine mation of the spectrum of white fracting plate |
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