Today my family visited the Royal Ontario Museum, and we had a wonderful time. Between dinosaurs and bat caves and totem poles and paperweights, we also explored the new Teck Suite of Galleries: Earth’s Treasures! Here we found rocks of all shapes and sizes (even a meteor from the moon!) but it was the above specimen that really caught my eye.
It is a sample of secondary copper ore, from the Bisbee area of Arizona, made up of malachite and azurite. In sitting beside it, I began to think of the amount of pigment such a rock would produce (not that I’m suggesting we pulverize such a beautiful sample, of course …). I didn’t come to any conclusions, but I think that it would be fair to label it as a “lifetime supply”.