Polarized-light photomicrograph of a carpet-looking thin section of Agate from Brazil, with layers of extremely fine-grained microcrystalline quartz (chalcedony). Width c. 2 mm.#wednesdaythoughts #science #geology #rocks #minerals #crystals #gemstones pic.twitter.com/Y7CHvpaNyB
— micROCKScopica (@micROCKScopica) May 23, 2018
via Twitter https://twitter.com/micROCKScopica
May 23, 2018 at 08:30PM
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