FERBERITE
Hoosier Mine, Boulder County, Colorado, USA
2.1 × 2.4 × 1.7 cm,
$750
HESSITE with PETZITE
Boulder County, Colorado, USA
8 × 5 × 4 cm,
SOLD
TELLURIUM
Wallstreet, Boulder County, Colorado, USA
4 × 3 × 1.5 cm,
SOLD
GALENA with SPHALERITE, ACANTHITE, SILVER and QUARTZ
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
5.5 × 3.5 × 2.5 cm,
SOLD
GEARKSUTITE
Burlington Mine, Jamestown, Boulder County, Colorado, USA
6 × 5 × 3.5 cm,
SOLD
GOLD
Boulder County, Colorado, USA
5 × 4 × 2.5 cm,
SOLD
FERBERITE
Oregon Mine, Boulder County Tungsten District, Boulder County, Colorado, USA
7.5 × 5 × 3.5 cm,
$850
SILVER with ACANTHITE, PYRARGYRITE and GALENA
Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA
8 × 6 × 5 cm,
SOLD
FERBERITE
Hoosier Mine, Boulder County, Colorado, USA
4 × 3.5 × 2.5 cm,
$1,250
GOLD
Cross Mine(?), Caribou, Boulder County, Colorado, USA
8 × 4.5 × 2 cm,
SOLD
ELBAITE
Himalaya Mine, Mesa Grande District, San Diego County, California, USA
2 × 3 × 1.7 cm,
$200