Mohs Scale, Crystal Systems Flashcards by J. Flint

Q

Isometric

A

Isometric = cubic

3 axes

3 @ 90 degress

all = lengths

a1 = a2 = a3

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Q

Hexagonal

A

Hexagonal

4 axes

3 @ 60 degress

3 lengths are equal

a1 = a2 = a3 /=/ c

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Q

Tetragonal

A

Tetragonal

3 axes

3 @ 90 degress

2 lengths are equal

a1 = a2 /=/ c

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Q

Orthorhombic

A

Orthorhombic

3 axes

3 @ 90 degress

No equal lengths

a /=/ b /=/ c

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Q

Monoclinic

A

Monoclinic

3 axes

2 @ 90 degress

No equal lengths

a /=/ b /=/ c

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Q

Triclinic

A

Triclinic

3 axes

none @ 90 degrees

no equal lengths

a /=/ b /=/ c

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Q

Mohs hardness scale

A

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