Trace-element compositions were determined using inductively coupled plasma, atomic emission spectroscopy (ICP-AES) following a four-acid digestion process. Rare-earth- and additional trace-element compositions were determined using inductively coupled plasma, mass spectroscopy (ICP-MS). ICP-MS samples were dissolved in acid following lithium borate fusion. Platinum, palladium, and gold values were obtained from a 30-gram sample using inductively coupled plasma - atomic emission spectroscopy (ICP-AES) following fire assay.