...Picked up some "Bismuth Crystals" today at Roots Country Market, Lancaster PA.
The geometry is just amazing, I need to get some good stereoscopic photos of these in a lightbox when I get home...
The geometry is just amazing, I need to get some good stereoscopic photos of these in a lightbox when I get home...
Bismuth
(element #83 on the periodic table) forms beautifully colored and
geometrically intricate hopper crystals, shown in the image to the left,
as it slowly cools and solidifies from its molten state.The
distinctive, 'hoppered', shape of a Bismuth crystal results from a
higher growth rate around its outer edges than on its inside face. The
higher rate of growth on the edges forms a crystal which appears to be
partially hollowed out in a rectangular-spiral stair step design. The crystal's eye-catching array of colors results from the formation of a thin oxide layer on its surface. Learn More...
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