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| − | [[Mineral]] [[crystals]] come in a seemingly infinite range of shapes. But behind this tremendous diversity of form there is a strict order, because crystals always grow according to simple [[mathematical]] laws. By stydying the [[crystal geometry]], [[crystallographers]] can fit any crystal into one of only six basic crystal systems. These are called [[Isometric (or Cubic) System|isometric]], [[Tetragonal System|tetragonal]], [[Hexagonal (or Trigonal) System|hexagonal]], [[Orthohombic System|orthorhombic]], [[Monoclinic System|monoclinic]], and [[Triclinic System|triclinic]]. Chesterman, p. 33 | + | #REDIRECT [[Crystal system]] |
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| − | =Sources=
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| − | *Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)
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| − | [[category:geology]]
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