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SHOW ONLY SPECIMENS
THAT ARE (select all that apply):



SILVER
SILVER Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA 1.6 × 2.5 × 1.4 cm, SOLD
QUARTZ with PYRITE
QUARTZ with PYRITE Caribou Mine, near Caribou, Grand Island District, Boulder County, Colorado, USA 5.6 × 3.2 × 2.7 cm, SOLD
FERBERITE
FERBERITE Chance Mine, Boulder County, Colorado, USA 6 × 3.7 × 3.1 cm, SOLD
GEARKSUTITE with FLUORITE
GEARKSUTITE with FLUORITE Burlington Mine, Jamestown, Boulder County, Colorado, USA 7.9 × 6.5 × 3.9 cm, SOLD
QUARTZ var. Amethyst
QUARTZ var. Amethyst Yellow Pine Mine, Boulder County, Colorado, USA 3.3 × 3.3 × 1.9 cm, SOLD
NIFONTOVITE
NIFONTOVITE Rey y Reina Mine, Charcas, Municipio de Charcas, San Luis Potosí, Mexico 0.4 × 2 × 0.3 cm, SOLD
NIFONTOVITE
NIFONTOVITE Rey y Reina Mine, Charcas, Municipio de Charcas, San Luis Potosí, Mexico 0.7 × 1.6 × 0.4 cm, SOLD
TELLURIUM
TELLURIUM John Jay Mine, Jamestown, Boulder County, Colorado, USA 5.5 × 3.5 × 2.5 cm, SOLD
COLORADOITE
COLORADOITE Phil Sheridan Mine, Sunshine, Gold Hill District, Boulder County, Colorado, USA 3 × 3.5 × 3 cm, SOLD
ALTAITE
ALTAITE Ivanhoe Mine (?), Boulder County, Colorado, USA 4.5 × 3 × 1.5 cm, SOLD
TELLURIUM
TELLURIUM Magnolia District, Boulder County, Colorado, USA 6 × 2.5 × 1.5 cm, SOLD