Mineralogy Database
Search |
About the mineralogy database |
Contact
2 samples matching your criteria
-
Sample n°5473 : olive-green rock with conchoidal fractureMinerals: OPALYear: 1953Country: Congo (RDC)
-
Sample n°5475 : reniform concretion and coral-like aggregates in basaltic tuffMinerals: OPALYear:Country: Congo (RDC)