1.1" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Turtle The Niobrara Formation is subdivided

The Niobrara Formation is subdivided into two members: the Fort Hays Limestone Member and the Smoky Hill Chalk Member

stretching up to 60 feet with massive 6-foot skulls

As a top open-ocean predator

creating a lightweight but effective armored covering

It was the first duck-billed dinosaur to have been found in North America

1.1" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Turtle The Niobrara Formation is subdividedLocation: Imilchil, Morocco Weight: 1. 3 Ounces Dimensions: 1. 1 Inches Long, 0. 9 Inches Wide, 0. 7 Inches Thick The item pictured is the one you will receive. Prehnite is a pale green mineral that varies from translucent to transparent and belongs to the phyllosilicate group. First identified in 1788 and named after Dutch Colonel Hendrik von Prehn, it is commonly found alongside minerals such as calcite and epidote in basaltic rock formations. This