Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.
Periodic Table Poster   My periodic table poster is now available!Periodic Table PosterPeriodic Table PosterPeriodic Table Poster
3D3DFluorite.
This crystal is one I bought years ago but only recently found in a box. It's probably from southern Illinois but I don't really know, having long ago lost the tags.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 15 January, 2005
Price: Unknown
Size: 5"
Composition: CaF2
Calcium