1061 Copper, Bisbee, Arizona

A mass of solid copper, whose crystallization is mostly crude. However a few distinct crystals reaching 1.1 cm are present. This specimen is almost completely free of green patina. Weighs 164 grams. 6.1×5.0x 3.3cm from the Walter G. Hubbard collection and Jim Parrish collection. They were rescued from an old...

1000 Whewellite, Gluck Auf Schacht, Burgk, Dresden, Saxony, Germany

1.18x.95x.75cm, ex Freiberg Academy. A rare, old time example of this unusual mineral species from Germany. This specimen host a complex, gemmy, colorless crystal of whewellite on a small amount of matrix. The crystal has glassy lustre and sharp faces. Whewellite is one of the small number of naturally occuring...

0971 Chrysothallite, Belloite, Avdoninite, Chlorothionite, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Oblast’, Far-Eastern Region, Russia

Another NEW SPECIES from this bizarre geological environment in Kamchatka, chrysothallite occurs as extremely small, bright golden yellow, equant micro crystals perched in scoria vugs, often with olive green belloite and occasionally other rare species such as deep green avdoninite, blue chlorothionite etc. Formula: K6Cu6Tl3+Cl17(OH)4*H2O, tetragonal, IMA #2013-008. Named for...