Quartz 
This slide shows quartz in a range of crystal orientations, all having low-first order interference colors.
UNC sample
GSR X1540
Rock type
unknown
Locality
unknown
Quartz This slide shows quartz in a range of crystal orientations, all having low-first order interference colors. |
UNC sample GSR X1540 | |
Rock type unknown | ||
Locality unknown | ||
| ||
| ||
| ||