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In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid.

3 votes
2 answers
886 views

Trouble understanding interplanar spacing using miller indices

We know that two parallel planes have the same Miller indices, this implies that we can have an infinite number of parallel planes close to one another all of which have the same Miller indices. But i …
Kashmiri's user avatar
  • 313
2 votes
2 answers
2k views

Conventional unit cell for a hexagonal crystal system

The figure shows a unit cell of a hexagonal crystal system. Drawn in bold, is the unit cell. The lightly shaded one is a unit cell as well and has a six fold symmetry along an axis, hence is more sym …
Kashmiri's user avatar
  • 313
2 votes
1 answer
320 views

If a good choice of a unit cell should be the one of most symmetry ,then why keep body cente...

For any lattice a good choice of a unit cell is the one that is the most symmetric. Now if every lattice made by a body centered tetragonal unit cell can be made by a face centered cubic unit cell ,wh …
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  • 313
1 vote
1 answer
258 views

Interplanar distance given Miller indice of the planes

Say we've a cubic crystal of unity edge length. A set of planes in such a crystal is specified by their miller indice as $(3 2 0)$. One of these planes then has intercepts on the axes as $(2 ,3 ,\inft …
Kashmiri's user avatar
  • 313
-4 votes
1 answer
364 views

If I break a crystal, would the "broken" pieces also have the same crystal shape? [closed]

If I've a crystal of some particular geometrical shape and i hammer it and it breaks into small pieces. Will the small pieces have the same shape as of the parent crystal?
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