Cobaltine calcite from Zaire on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Aragonite on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Hungarian mineral on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Antimonite from Italy on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Greenockite-coated Calcite from Joplin, MO. On display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Australian opal on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Mineral from Mexico on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Romanian crystals on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Smithsonite from Greece on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.
Aragonite on display in the Naturhistorisches Museum, Vienna. Photo by Renée DeVoe Mertz.