07617 - Beautiful Orthoclase (Feldspar) Crystals from High Atlas Mountains, Morocco Basilosaurus Teeth Specifically this specimen comes from

Specifically this specimen comes from the Hell Creek Formation

up to 20 metres (66 ft) long

Its fossilization color has gorgeous orangish shades

Reedops sp: Fossilworks (Paleobiology Database)

07617 - Beautiful Orthoclase (Feldspar) Crystals from High Atlas Mountains, Morocco Basilosaurus Teeth Specifically this specimen comes fromOrthoclase, 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.