Term
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Definition
pyrite
chromite
ilmenite
magnetite
chalcopyrite |
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Term
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Definition
minerals with densely packed atoms
minerals with high Z atoms
minerals with higher degree of covalent
bonding |
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Term
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Definition
| unit cell dimensions are of different lengths and any axis may be the longest. b and c are at 90°; a and b are at 90°; a and c are not at 90° |
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Term
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Definition
| unit cell dimensions are of different lengths. all angles between the axes are 90° |
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Term
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Definition
| a and b are of the same length, c is different. all angles between the axes are 90° |
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Term
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Definition
a and b are of the same length, c is different. angles between a and c and b and c are 90°. the angle between a
and b is 120° |
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Term
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Definition
| all axes are of the same length. all angles between the axes are 90° |
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Term
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Definition
| motifs, including crystal faces or particular atomic arrangements, that are repeated about a point |
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Term
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Definition
repetition of a motif by a set of
uniform rotations about an axis |
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Term
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Definition
symmetry with respect to a center
point |
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Term
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Definition
combination of rotation axes with
inversion |
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Term
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Definition
| crystal faces make simple intercepts on crystal axes |
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Term
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Definition
| common crystal faces are parallel to lattice planes that have high lattice node density |
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