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tabulate corals (forming mounds
an extinct genus in the Fabaceae family
enabling different hadrosaur species to distinguish one another
six-sided corallites—the skeletal structures of once-living coral polyps
The inner chambers contained gas or fluid
3.1" Natural Rough Black Tourmaline Mineral Crystal Specimen Schorl Brazil Fruit tabulate corals (forming moundsLocation: Brazil Weight: 6. 8 Ounces Dimensions: 3. 1 Inches Long, 1. 6 Inches Wide, 1. 4 Inches Thick The item pictured is the one you will receive. Black Tourmaline, or Schorl, is a common but remarkable member of the tourmaline group, found in igneous and metamorphic rocks. Its natural striated crystals, deep black to dark brown color, and glassy to resinous luster make it a classic mineral for study, collection, and jewelry. Black Tourmaline has a
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