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a young form of tree resin that has not yet fully fossilized into amber
They first emerged in the Triassic Period (240 million years ago) and survived until the Cretaceous Period (65 million years ago)
Selenite is formed by calcium sulfate dihydrate (CaSO4·2H2O)
This item is 4” x 2” and weighs 25
Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms
Ultra Hematitic Rose Rock | Oklahoma flurite a young form of treeThese 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
