A glowing yellow cluster of large, translucent, thick ettringite crystals on a bit of calcite matrix, and with contrasting black gaudefroyite upon the right side. The large crystal is fully terminated, though admittedly has a contact on the left side where it grew against another crystal no longer present. Still, the upright, freestanding crystal is extremely dramatic, is complete; and such crystals are rare. Usually they are flatlying, whereas this is freestanding and vertical. The smaller crystal at the base is fully terminated and complete. Ex. Charlie Key.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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