Paramelaconite isotropic Awaruite weak to moderate Osmium weak, dark brownish to greenish grey strong, except...Mine; NBH Mine), Broken Hill, Yancowinna Co., New South Wales, Australia; PPL B Anhedral native copper (dark;...internal reflections); Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey (sample: Halbach); XPL...grey; arg); Monte Narba Mine, San Vito, Cagliari Province, Sardinia, Italy; PPL B Same sample as above:...(West Wits Line), Witwatersrand field, Gauteng Province, South Africa; PPL B Intergrowth of electrum (yellowish |