Iridescent Hematite Cluster Articulated so prepare to charm and

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The first Spinosaurus partial skeleton was unearthed in 1912

These bacteria use sulfate (SO₄²⁻) as an electron acceptor

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Iridescent Hematite Cluster Articulated so prepare to charm andIridescent hematite, also called rainbow hematite, displays a variety of beautiful interference colors. Usually, a thin film comprised of aluminum and phosphate was found to coat such hematite, although one example of a coating with aluminum and arsenate was discovered. The thin films that range from tens to hundreds of nanometers thick are believed to cause the color. High resolution secondary electron imaging shows that the thin film consists of