Russia
1217 Platinum, Tuba River, Western Siberia, Russia
Several dozen of these little nuggets, at least, mounted on a square of stiff yellow paper glued to the top of a cork pedestal in a two piece black plastic micromount display case. From the collection of the late Charles E. Bosworth, whose label states that these nuggets were collected...
1104 Kozyrevskite, Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Oblast’, Far-Eastern Region, Russia
This NEW SPECIES occurs as very tiny, grass-green to light green aggregates of coarse prismatic to acicular crystals on volcanic scoria, typically with darker green undefined Cu-sulfates and occasionally black tenorite. Formula: Cu4O(AsO4)2 ? orthorhombic – IMA #2013-023, dimorphous with triclinic ericlakerite but ortherwise a new structural type and unrelated...
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...
