Dean Allum's Photo Gallery
Mining Ghost town of Gilman Colorado
Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USAAdjacent to the Eagle Mine Mill is the Mining Ghost town of Gilman forever frozen at 1982 when the mine shut down.
L6N-VWEAnalcime Na(AlSi2O6)·H2O , Chabazite-Ca (Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Southeast Quarry, North Table Mountain, Golden, Golden Mining District, Jefferson County, Colorado, USADimensions: 30 mm x 40 mm x 30 mm
For user gallery.
Medium Wavelength UV flashlight illumination on the left. Cellphone photo does not do justice to the analcine green glow on top of slight white glow of underlying chabazite crystals
Set of strontanite/celestine crystals available for micromount
Convict Hill Quarry, Oak Hill, Travis County, Texas, USADimensions: 5 mm x 5 mm x 2 mm
Largest Crystal Size: 8 mm
Set of strontianite and celestine crystals offering on mindat trade board
8QV-5TYQuartz SiO2
Bastrop County, Texas, USAField of View: 40 cm
Microcrystaline quartz with Liesegang patterns
CRK-L27Albite (Var: Anorthoclase) (Na,K)AlSi3O8
Mount Erebus, Ross Island, Ross Archipelago, Victoria Land, Eastern Antarctica, AntarcticaDimensions: 5 cm x 2 cm x 1 cm
Field of View: 14 cm
3 dark grey Anorthoclase crystals with rough texture; each 5 cm long. One still has volcanic glass froth attached.
2N6-Y3UPyrite FeS2 , Hematite Fe2O3 , Calcite CaCO3
Bastrop County, Texas, USADimensions: 130 mm x 80 mm x 20 mm
Pyrite "Veins" on hematite on Calcite. Apparently this is a pyrite concretion. It was found in the Colorado River of Texas in Bastrop County. Size is 13x8x2cm. Each Pytite vein is approximately 1 mm wide. Also, it vaguely resembles a human spleen.
3H0-80RPyrite FeS2 , Hematite Fe2O3 , Calcite CaCO3
Bastrop County, Texas, USADimensions: 130 mm x 90 mm x 50 mm
Pyrite "Veins" on hematite on Calcite. Apparently this is a pyrite concretion. It was found in the Colorado River of Texas in Bastrop County. Size is 13x9x5cm. Each Pytite vein is approximately 1 mm wide. Also, it vaguely resembles a human heart.
LWG-VDECalcite CaCO3
Popes Bluff, Colorado Springs Area, El Paso County, Colorado, USAField of View: 30 cm
Largest Crystal Size: 12 cm
Irregular shaped Calcite concretions 5 to 12 cm long. These were found on a road nearby after a flood.
DEL-Y5ACalcite CaCO3
Popes Bluff, Colorado Springs Area, El Paso County, Colorado, USAField of View: 25 cm
Largest Crystal Size: 80 mm
Calcite concretions 4 to 8 cm wide. Walnut to spherical shaped. These were found on a road nearby after a flood.
XPH-MJVCalcite CaCO3
Bastrop County, Texas, USADimensions: 10 cm x 6.5 cm x 0.7 cm
Field of View: 25 cm
Yellow calcite, 10cm across, one with crystal faces found in the Colorado River in Bastrop County. These are probably portions of concretions