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| Carbonates | |||
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Ankerite CaFe[CO3]2 brown spar from Felsöbanya, Hungary. |
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Aragonite CaCO3 twinned needle spar from Corocoro, Bolivia. |
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Aragonite CaCO3 flower of iron from Eisenerz, Steiermark, Austria. |
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Azurite Cu3[OH|CO3]2 blue copper ore with malachite from the Copper Queen Mine, Bisbee, Arizona, USA. |
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Azurite Cu3[OH|CO3]2 blue copper ore from Tsumeb, South-West Africa. |
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Calcite CaCO3 calc-spar from St. Andreasberg, Hartz Mountains, Germany. |
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Calcite CaCO3 calc-spar from Oberhohendorf, Zwickau, Saxony, Germany. |
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Cerussite PbCO3 white lead ore from Broken Hill, Australia. |
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Dolomite CaMg[CO3]2 globular aggregates with ankerite and gypsum from Schemnitz, Hungary. |
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Dolomite CaMg[CO3]2 idiomorphic crystals with quartz and sphalerite from the Schauinsland Mine, Freiburg, Baden, Germany. |
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Dolomite CaMg[CO3]2 idiomorphic crystals from the Aurora Mine, Velbert, Rhineland, Germany. |
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Magnesite MgCO3 coarse crystalline magnesite from Sunk, Trieben, Steiermark, Austria. |
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Malachite Cu2[(OH)2|CO3] banded aggregates from Nishne Tagilsk, Ural Mountains, Russia. |
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Malachite Cu2[(OH)2|CO3] botryoidal aggregates from the Ural Mountains, Russia. |
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Malachite Cu2[(OH)2|CO3] banded aggregates from Nishne Tagilsk, Ural Mountains, Russia. |
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Rhodochrosite MnCO3 spherical aggregates of manganese spar from Romania. |
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Rhodochrosite MnCO3 manganese spar from the Mina Captillas, Argentina. |
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Siderite FeCO3 globular aggregates of steel ore from the Levant Mine, Cornwall, Great Britain. |
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Siderite FeCO3 steel ore with calcite from the Siegerland, Germany. |
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Smithsonite ZnCO3 reniform smithsonite from Rezbanya, Hungary. |
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Strontianite SrCO3 aggregate from Bad Grund, Hartz Mountains, Germany. |
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Witherite BaCO3 barium carbonate from Alston, Cumberland, Great Britain. |
| Borates | |||
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Boracite Mg3[Cl|B7O13] idiomorphic crystals from Diekholzen, Hildesheim, Germany. |
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Borax Na2B4O7 · 10 H2O idiomorphic crystals of tincal from Tibet. |
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