08266 - Top Beautiful Orthoclase (Feldspar) Crystals from High Atlas Mountains, Morocco Unidentified Trilobites Search for other: Main group

Search for other: Main group pallasites

Bolivia (2)

Trilobita - Asaphida - Hungaiidae

This beautiful intact Prognathodon tooth is preserved in exceptional way

Comments: Submitted by H

08266 - Top Beautiful Orthoclase (Feldspar) Crystals from High Atlas Mountains, Morocco Unidentified Trilobites Search for other: Main groupOrthoclase, or orthoclase feldspar (endmember formula KAlSi3O8), is an important tectosilicate mineral which forms igneous rock. The name is from the Ancient Greek for "straight fracture," because its two cleavage planes are at right angles to each other. It is a type of potassium feldspar, also known as K feldspar.