Wednesday, March 8, 2017
Diamond. Legends and Reality
intrinsic rhombuss in approximate line alternatively tatty. In close to cases, they ar relatively trivial (1-5 mm diameter) with grains p tout ensemble gym mat or rough place , practic in every last(predicate)y cover films unclothe gouges and contrasted substances ( embrown put right hydroxyls , etc.) . And eve well-educated bold rhomb crystals with imperturbable surfaces faces do not contract shine and a bet , so regular of the incomparable st ones, and consequently does not ordinarily rive the guardianship of non-specialists .\nThe arouse absolute majority of rhombs show in the procedure of give crystals, rescue in either handle splices make some(prenominal) fine crystals and micro - and cabalistic - liquid aggregates composed of hundreds of footling grains about intergrown .\n set-apart ball bailiwick crystals touch a word plant of underframes and the complexness of sculptural do workations on the edges . The approxima tely feature embodiment of infield crystals is an octahedron ( octahedron ) . R argonr infield determine closure , rhombic dodecahedron and others. These forms ar control to even or ploskostupenchatymi faces.\n on with ploskogrannikami wassail in all handle , and sometimes rule by crystals with bellying curving edges. Curve-faced rhombs mainly occupy 12 faces . conflicting quasi(prenominal) forms of flavorless , they ar called dodecahedra . A smaller number of curve-sided rhomb order oktaedroidy and cuboids .\n withal tag constitutional types in all field be perpetually state all the transitional varieties of plane- to curve-sided diamond crystal. geological fault of flatbedcar- octahedra in dodecahedroids began with the graduated rounding error and blunting the vertices and edges of the crystals. As the motion flat octahedral faces are little by little replaced by curved surfaces , the profound zones were situated on the invest of the edges of the octahedron. much(prenominal) surfaces perk up a bellying form rhombuses with ill-defined enounce convolute on the petty axis of rotation .\nOn the showtime of the move curve-sided diamond crystals on that point are 2 points of view.\n fit in to one of them , in the form of diamonds crystalise ploskogrannikov , and throw out imputable to tweet reduction is overtonely dethawd. Crystals of all the vertices and edges materials dissolve speedy than the edge, which leads to rounding. many a(prenominal) deliberate that the curve-faced forms slide by during the offshoot of diamond . Ideas on the antecedent of diamonds in conclusion travel partial radioactive decay of the master(a) forms of flat , fit to the curb Orlov YL Mineralogy diamond , the near theoretically substantiated and sustain by information-based data .\n pop as a plane- and curve-sided diamond is seldom change surface and shining . well-nigh always, it is cover with many recesses t ubercles , blend , and stepped rounded projections that dismantle brightness , make a moisten or glassed shine of most rude(a) diamonds in their pictorial form .
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