830 - Opal

At-A-Glance

Country of Origin

United States

Photos

Essential Information

Specimen ID

830

Mineral Name

Opal

Chemical Formula

SiO2•n(H2O)
Specimen Number
064

ID number on one piece unreadable, may be 83/212? Both labels were in specimen box.

"Geyserite" opal, knobby masses

Geographic Origin

Locality Nickname

Yellowstone National Park, Wyoming

Locality Lat/Long

44.427963, -110.588455
Geographic Features
Yellowstone National Park
Yellowstone Caldera
Snake River Plain