claim: John Goodman starred in Cloverfield.
evidence: Orthoclase , or orthoclase feldspar -LRB- endmember formula KAlSi3O8 -RRB- , is an important tectosilicate mineral which forms igneous rock .. endmember. endmember. tectosilicate. Silicate minerals#Tectosilicates. mineral. mineral. igneous rock. igneous rocks. The name is from the Ancient Greek for `` straight fracture , '' because its two cleavage planes are at right angles to each other .. Ancient Greek. Ancient Greek. It is a type of potassium feldspar , also known as K-feldspar .. potassium. The gem known as moonstone -LRB- see below -RRB- is largely composed of orthoclase .. moonstone. Moonstone ( gemstone )