- Tetrahedrite, Tennantite
- Small Cabinet, 7.7 x 5.5 x 2.5 cm
- Cobre Mine, Concepcion del Oro, Mun. de Concepcion del Oro, Zacatecas, Mexico
- Ex. Charles Hansen
Both of these minerals are well-known from Zacatecas. Here, you have a nicely-balanced specimens with sharp crystals of both, isolated by snowy quartz that adds attractiveness to the specimen. From the well-known California collection of Charles Hansen.