There are not too many zirconium phosphates on Earth. Maine has two of the localities, this one, Mount Mica, is the type locality. The specimen is small and in the photos you can easily see one of the cubes. It is trigonal and crystallizes as pseudocubes. The crystal at the arrow is about 0.5mm but there are about 8 or 9 of them in a cluster not too easily seen in the photos. It is etched out according to the stick on label on the plastic box.