O1R1T1H4O1C3L1A1S1E1S1
16 points
ORTHOCLASES is validvalid
ORTHOCLASE,
ORTHOCLASE, common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other
ORTHOCLASE,
ORTHOCLASE, common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other