Talk:Cubic crystal system
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[edit] Large changes
I've made some large changes to this article. Most important is that there seemed to be some confusion as to the difference between a cubic lattice and a cubic crystal. This article should be about the cubic lattice with the somewhat confusing name cubic crystal system. For example, the figures show lattice points not atoms, and the pure metal examples mentioned are crystals with a one-atom basis centered on each lattice point. I've also introduced a new table giving the cubic point and space groups. O. Prytz 17:26, 5 June 2006 (UTC)
[edit] Beginning to Change
I've begun to change the article. I'll write it on the level of a college freshman level texbook. I'll try to keep it as straightforward as possible. It's better to convey less information understandably than talk like a professor and have no one understand you. If they want complete information, they can go to the nearest college's library.
[edit] Covalent Bonds?
The pictures of the FCC and BCC both contain som diagonal lines? That ins't right, is it? At least not if the lines are interpreted as covalent bonds...
- The diagonals clarify the positions of the lattice points, regardless of covalent bonds.--Patrick 12:42, 13 January 2006 (UTC)
[edit] Writing Style/Level
This writing style of this article belongs in a scientific journal, not an encyclopedia. Having taken two semesters of chemistry - and thus having at least a vague idea of lattice structures - was no help to me in trying to decipher this technically-written article. Perhaps a summary or clarification of the article would help us less educated folk understand it. Thanks
I agree ;).
I agree too. :)
Not bad, but could do with some more information on the various crystal structures eg. volumes of the interstitial sites in each lattice, examples of materials with each lattice (eg. fcc copper, bcc iron), a reference to the hexagonal packing system from fcc (which is not really intuitive!) ..and perhaps some explanation/avoidance of more "technical" terms eg."Galenal type" - not everybody needs passing references to complicated concepts. Could be good - you obviously know your stuff!
[edit] Gyroidal class
Article says that cuprite belongs into gyroidal class but webmineral.com puts it into hexoctahedral class. Siim 18:48, 5 February 2006 (UTC)
Agreed. Fixed. My reference (added) Klein & Hurlbut states that cuprite was long considered gyroidal, but was eliminated leaving no known mineral example. Vsmith 19:38, 5 February 2006 (UTC)
petzite is supposed to be gyroidal - added it. Geologyguy 16:58, 22 April 2006 (UTC)
