Geology (59/229)

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Cubic galena crystals, with marcasite and sphalerite on dolomite matrix, Joplin, Missouri, USA. Galena is the chief ore of lead. Its shiny metallic luster is striking.
Cubic galena crystals, with marcasite and sphalerite on dolomite matrix, Joplin, Missouri, USA. Galena is the chief ore of lead. Its shiny metallic luster is striking.
Filename: GLM2104.jpg
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