Ourayite is a very rare silver lead bismuth sulfide which occurs as orthorhombic, metallic, bladed (often microscopic) crystals. The type locality is the Old Lout mine, Poughkeepsie Gulch, Red Mountain district, San Juan Co., Colorado, USA, a polymetallic vein deposit associated with felsic to intermediate volcanism. Other notable localities include: Deo Gratias mine, La Cienega, Mun. de Pitiquito, Sonora, Mexico.
You can buy these rare bladed metallic crystals online from The Arkenstone, www.iRocks.com to add fine mineral specimens to your collection.