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Mineralogy


Crystallography Introduction

Crystallography:

- The study of crystalline solids and laws that govern growth, external shape, and internal structure.

Crystalline:

- Regular internal arrangement of atoms/ions in a long range geometric array.

3-D internal order:

- repetition of a motif (a unit of pattern)

    Motif can be:

      H20

      anionic groups: (SiO4)-4, (PO4)-3, etc.
      ions: Ca2+, Mg2+, etc.
      atoms: Cu, C, Au, etc.


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