Crystallography

The crystal systems are defined with crystal forms shown in 3-D.  Unit cells are discussed and the cell axes are defined and given for each of the crystal systems. The minerals belonging to each system are also listed.  Finally, there is a discussion of why different minerals form certain crystal shapes.

Mineral Forms

Over 70 of the most common mineral forms are listed and the minerals exhibiting each form given.  This is a great help to mineral collectors and anyone needing to identify a mineral.

Mineral Environments

Over 40 environments are listed in which minerals can be found.  The minerals found in each of these environments are also given as an aid to mineral collectors.

Mineral Families and Series

Approximately 1000 minerals are listed together with the family and/or series to which they belong.  These cover the most common members of the mineral kingdom.

Identification Tests

These tests are used to define mineral properties in addition to the nine used in the Minrls identification routines.  They cover the gambit from very simple to very complex.

Mineral Terms

Over 150 mineral terms are listed with their definitions.

Hardness/Density Ranking

Since all minerals have a range of densities and hardnesses, it is impossible to produce a single list of hardness and density rankings.  Minrls handles this problem by having two rankings, one for the highest values of harness or density and the other for the lowest.

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Last modified: 12/18/03