Crystal Systems + extra

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7 Terms

1
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What are the six crystal systems in order?

isometric, tetragonal, hexagonal, orthorhombic, monoclinic, triclinic

2
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What is the lattice structure, angles, optical class, and mineral example of an isometric crystal system?

a=b=c, 90-90-90, isotropic, halite

3
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What is the lattice structure, angles, optical class, and mineral example of an tetragonal crystal system?

a=b≠c, 90-90-90, uniaxial, rutile

4
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What is the lattice structure, angles, optical class, and mineral example of an hexagonal crystal system?

 a=b≠c, 90-120-90, uniaxial, quartz

5
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What is the lattice structure, angles, optical class, and mineral example of an orthorhombic crystal system?

 a≠b≠c, 90-90-90, biaxial, forsterite

6
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What is the lattice structure, angles, optical class, and mineral example of an monoclinic crystal system?

a≠b≠c, 90-?-90, biaxial, orthoclase

7
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What is the lattice structure, angles, optical class, and mineral example of an triclinic crystal system?

a≠b≠c, ?-?-?, biaxial, albite