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Lions and Tigers and Bears Oh My! The same nm-scale textures seen in carbonates and clays are also found in chert, chalcedony, opal, pyrite, chalcopyrite, chalcocite, native S, chrysocolla, malachite, hematite, limonite, and a plethora of other minerals. Are these textures nannobacteria involved in the formation of the minerals? You be the judge.
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