At-A-Glance
Country of Origin
IA
United States
Photos
Essential Information
Specimen ID
1186
Mineral Name
Quartz
Mineral Variety
Chalcedony
Chemical Formula
SiO2
Additional Details
Specimen Number
388
Physical Description
Half of a typical gray chalcedony geode with some crystalline quartz
Geographic Origin
Locality Nickname
Keokuk, Iowa
Locality Lat/Long
40.4044731, -91.3963966