At-A-Glance
Country of Origin
Sidi M'Hamed
Algeria
Photos
Essential Information
Specimen ID
859
Mineral Name
Opal
Mineral Variety
Tripolite slate
Chemical Formula
SiO2•n(H2O)
Additional Details
Specimen Number
047
Notes for Researchers
Locality questionable.
Physical Description
Opal, dark brown glassy mass
Geographic Origin
Locality Nickname
Algiers, Algeria
Locality Lat/Long
36.753768, 3.0587561