BERTRANDITE on QUARTZ var. Smoky
Dream Chaser Claim, Mt. Antero area, Chaffee County, Colorado, USA
1.7 × 4.5 × 1.4 cm,
$250
SILVER
Bulldog Mine, Creede, Mineral County, Colorado, USA
7.9 × 7 × 0.7 cm,
$350
FLUORITE with QUARTZ
Lake George, Park County, Colorado, USA
7 × 5.5 × 5.5 cm,
$350
GOLD (4.51 ozt)
Leadville, Lake County, Colorado, USA
8 × 5 × 2 cm,
$35,000
FLUORITE
near Cañon City, Fremont County, Colorado, USA
8 × 4.5 × 3.5 cm,
$450
SYLVANITE
Cresson Mine, Cripple Creek, Teller County, Colorado, USA
6.9 × 4.6 × 4.7 cm,
$3,500
GOLD
Idarado Mine, Telluride, San Miguel County, Colorado, USA
6.7 × 5.1 × 1.2 cm,
$350
HÜBNERITE
Ruby Mine, San Juan County, Colorado, USA
14 × 7 × 5 cm,
$850
FLUORITE
Sunnyside Mine, near Silverton, San Juan County, Colorado, USA
13 × 12 × 6 cm,
$350
BARITE with CALCITE
Book Cliffs, Grand Junction, Mesa County, Colorado, USA
20 × 13 × 8 cm,
$1,500
A Manual of Mining by M. C. Ihlseng
New York, USA
15 × 23.5 × 3.5 cm,
$40