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Aragonite and calcite are ‘polymorphs’—sharing the same chemical formula but boasting subtly different crystal structures
The Xiphactinus
Crystal Structure: Turquoise is classified as a cryptocrystalline mineral with a triclinic crystal system
Weight: 5 Pounds 8
0.5" Detailed Fossil March Fly Insect Green River FM Uintah County UT Eocene Age Enchodus Aragonite and calcite are ‘polymorphs’—sharingLocation: Uintah County, Utah Weight: 1. 2 Ounces Dimensions: 1. 9 Inches Long, 1. 6 Inches Wide, 0. 5 Inches Thick (Plate) Insect Dimensions: 0. 5 Inches Long 0. 5 Inches Wide The item pictured is the one you will receive. This is a genuine fossil. 50 million years old Eocene age March Fly Insect Fifty million years ago ancient Fossil Lake existed in what is now southwest Wyoming. Of its estimated maximum extent of 930 square miles, approximately 500
