Proterozoic dike with big feldspars.
Obverse of the sample here:
Autopano Giga stitched version (for comparison)
Proterozoic dike with biiiiiiiiiiiiiiiiig feldspars (and flow structures, in this case). Want to see the other side of this sample? Try this: gigapan.com/gigapans/187738
Reddish quartz in this Neoproterozoic metasedimentary rock.
Sample measures 12.5 cm wide by 7 cm tall.
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