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James De Carle Sowerby
James De Carle Sowerby
Terrapene clausa from Monograph of the Testudinata (lithograph by Edward Lear)
Terrapene clausa from Monograph of the Testudinata (lithograph by Edward Lear)
Page from Treatise on mineralogy by Friedrich Mohs (1825)
Page from Treatise on mineralogy by Friedrich Mohs (1825)
The Moon Mineralogy Mapper, a spectrometer that mapped the lunar surface
The Moon Mineralogy Mapper, a spectrometer that mapped the lunar surface
Calcite is a carbonate mineral (CaCO3) with a rhombohedral crystal structure.
Calcite is a carbonate mineral (CaCO3) with a rhombohedral crystal structure.
Aragonite is an orthorhombic polymorph of calcite.
Aragonite is an orthorhombic polymorph of calcite.