The Grenville Orogen is a deeply eroded and highly uplifted orogenic belt that extends from Labrador in northeastern Canada to the Adirondack Mountains and southwestward under the coastal plain of the eastern United States

Dimensions: 62x42x21 mm / 2

The meteorite falls in 4-5 petrology class

Clarity: SI (Slightly Included) with corner flaw

Pseudomorph Goethite After Marcasite | Prophecy Stone | 17-23 gr | Farafra Oasis, Egypt Pyromorphite The Grenville Orogen is aYou will receive one of the Pseudomorphs pictured. Pseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen