Surubim quartz

Surubim quartz is a quartz with some round marks (dots) result from radiation exposure that change some color of mineral contents in quartz .

Not a common find, usually found in macrocrystaline quartz forms , even more uncommon in drusy quartz.

This piece have other crystal marks from it is formation is an uncommon example of Surubim quartz.

No specific location confirmed just Mines Gerais state, but it is supposedly from Coronel Murta.