CAU25 Pyrite on Quartz
Santa Eualia, Chihuahua, Mexico
8.2x 5.6x 4.3 cm
$365
A very unusual quartz specimen, with little bits of pyrite on and just under the surfaces of a group of quartz crystals. It could almost pass for an odd pyrrhotite specimen, but a slightly closer look shows that it is obviously quartz. Sawn on the back, with minor peripheral damage. It comes with a collector label that dates it to at least 1990.