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They first emerged in the Triassic Period (240 million years ago) and survived until the Cretaceous Period (65 million years ago)
Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms
Chlorite-included quartz from Pakistan features vivid green chlorite inclusions within the transparent quartz this can create a “green garden” or phantom effect
Calcite is one of the most abundant minerals on Earth
families and wives of the Apache warriors wept in grief
Ultra Hematitic Rose Rock | Oklahoma flurite They first emerged in theThese dark red violet rose rocks consist of sandy crystals of barite (barium sulfate) in petal like clusters that resemble a rose in full bloom. These specimens are richer in iron than normal barite roses, giving them their unique coloring. Deposited approximately 250 million years ago during the Permian Period. The rose rocks are found in Oklahomas Garber sandstone formations. Because the barite is more durable than the sandstone, the rosettes erode
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