Asterated quartz locality

Cleaning house, and re-found this unusual quartz crystal. Came in a box of oddities without labels; figured it was distinctive enuf that I could figure it out, but have seen nothing similar. Whatever produced the star shapes is mostly gone, occurred in the last 2 mm of surface growth of the quartz. The quartz crystal itself is truncated at the top, apparently grew into a mass of the asterated material. Anyone know a locality?

Bob



Edited 1 time(s). Last edit at 06/18/2012 10:43PM by Bob Jackson.

photos please

Ooops, forgot to click 'attach'! Photo now in original msg.

There is a locality near Diamontina, MG, Brazil that produces long slender crystals of quartz that occasionally have radial, flower like impressions on some of their prism faces. The local conventional wisdom is that these impressed patterns were caused by Pyrophyllite crystals.

Rock Currier
Crystals not pistols.

Good gravy, Rock, how many quartz localities are 'near Diamontina'? Thanks, will look into that.

Bob