 | ||||
| Quartz |
 |
| Quartz |
 |
| Barite |
 |
| Pyrite |
Sources:
http://www.rockhounds.com/rockshop/xtal/part1.shtml
http://dave.ucsc.edu/myrtreia/crystal.html
http://www.enchantedlearning.com/geology/rocks/pages/crystalsystems.shtml
http://ruppweb.dyndns.org/Xray/101index.html
http://webmineral.com/crystall.shtml
http://en.wikipedia.org/wiki/Quartz
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