At-A-Glance
Country of Origin
CO
United States
Photos
Essential Information
Specimen ID
868
Mineral Name
Opal
Mineral Variety
Semiopal
Chemical Formula
SiO2•n(H2O)
Additional Details
Specimen Number
011
Notes for Researchers
Princeton 94
Physical Description
Var. semiopal, white/light brown glassy mass
Geographic Origin
Locality Nickname
Leadville, Colorado
Locality Lat/Long
39.2508229, -106.2925238
Mining District
Leadville Mining District