Anatase on Quartz

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This bizarre specimen features a very unusual hollow anatase crystal of 1.5 cm next to an adjacent crystal of more typical habit. I have never seen anything quite like this. It is possible the anatase we see is a cast after an earlier generation, or even after a zircon perhaps, but I am not sure. The crystals sit on a quartz crystal (broken at either end but intact on the display face). In any case, the material has been analyzed and it is anatase now - a whopping huge one for Brazil, I would say. (obviously not a Jonas tourmaline but it fit in well with this update and was also at Munich...)