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is a calcium carbonate mineral with a Mohs hardness of 3 and forms the basis of limestone and marble
coarse-grained intrusive igneous rock made mostly of minerals like plagioclase feldspar and pyroxene
with their proportions varying based on the specimen's individual cooling trajectory and parent body metamorphism
The use of sp
4.6" Maiasaura Hadrosaur Dinosaur Rib Bone Fossil Two Medicine FM Montana COA Acanthoceras is a calcium carbonate mineralLocation: Two Medicine Formation, Montana (Private Land Origin) Weight: 4. 6 Ounces Dimensions: 4. 6 Inches Long, 1. 6 Inches Wide, 0. 8 Inches Thick Comes with a Certificate of Authenticity The item pictured is the one you will receive. Cretaceous Age 83 70 Million Years Old. Name: Maiasaura Type: Herbivore Size: 9 meters in length. Maiasaura is a large hadrosaurid dinosaur from the Upper Cretaceous of North America, dated to approximately 6570
