Phlogopite Twinned Crystal on Tremolite.  Selleck Road, St. Lawrence County, New York.  These are extremely rare examples of triplet twins which present themselves in a "Mercedes Benz" like form.  This example measures 2.7 x 2.3 x 2.2 cm and shows all of the three flanges.  This crystal is prismatic and translucent.  It is damage-free sits upright on a bed of tremolite crystals.  $170