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Monoclinic prismatic Legrandite crystals with Limonite matrix From the Ojuela Mine in Mapimi, Durango, Mexico - Zn2(AsO4)(OH)•(H2O) - Named after the Belgian mining engineer, Legrande.
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Trigonal hexagonal scalenohedral Rhodochrosite in cluster on Quartz crystals from the Hedgehog Pocket, Main Stope Drift, Sweet Home Mine, Alma, Colorado - MnCO3 - From the Greek rhodon -"rose" and chroma - "color."
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Hexagonal dihexagonal dipyramidal Beryl var. Aquamarine crystal with tourmaline Schorl rom the Erongo Mine, Namibia, SW Africa - Be3Al2Si6O18 - From the ancient Greek, beryllos, signifying a "precious blue-green color of sea water" stone.
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Orthorhombic dipyramidal Barite crystal on reddish Hematite & Dolomite covered matrix from Frizington, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England - BaSO4 - From the Greek, baryos, "heavy."
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Trigonal ditrigonal pyramidal Pyrargyrite crystals on top of Calcite rhombs from the Samson Mine, St. Andreasberg, Harz, Germany - Ag3SbS3 - From the Samson Mine, St. Andreasberg, Harz, Germany. From the Greek, pyr and argyros, "fire-silver" in allusion to color and silver content.
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Orthorhombic dipyramidal Forsterite var. Peridot on Magnetite from Sapat Gali, Naran-Kagan Valley, Kohistan District, North-West Frontier Province, Pakistan - Mg2(SiO4) -
Named for Johann Forster, German naturalist.
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Orthorhombic dipyramidal Adamite clusters on Limonite from the Ojuela Mine, Mapimí, Durango, Mexico - Zn2(AsO4)(OH) - Named after the French mineralogist Gilbert Joseph Adam (1795-1881).