The best crystals are pyritohedrons
measuring 7 or 8 mm, found as floaters in a pale brown vein of carbonates.
From the Moon-lite claim, Bullion Canyon, Tooele County, groups of lustrous cubes and pyritohedrons
, with individuals to 4 cm on edge, emerged during the 1980s and 1990s; from the Four Metals mine, also in Bullion Canyon, clusters of distorted pyrite cubes, individuals to 5 cm, on greenish clay matrix, emerged during the past few years.
These are groups of pyritohedrons
, mirror bright, in miniature sizes--really superb.
Spruce Ridge pyrite crystallizes in cubes, pyritohedrons
, and combinations thereof.
The hubnerite, in turn, forms thick growths, like a prickly underbrush, on slightly rough-faced pyrite pyritohedrons
to 5 cm on edge, and groups of same to 15 cm across.
Good specimens of barite, enargite, octahedral pyrite, pyrite pyritohedrons
, and good iridescent pyrite along with quartz crystals were collected.
In addit ion there were Scandinavian classics like loose, sharp 2-cm pyritohedrons
of cobaltite and sharp, lustrous pseudo-octahedrons of glaucodot from Sweden; well crystallized leucophanite, columbite and thortveitite from Norway; and richly brownish red, euhedral crystals of eudialyte to 2 cm in complex ultra-alkaline matrix, not from the Kola Peninsula, Russia, but from 19th-century localities in Greenland.