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Quartz (Var: Amethyst) : SiO2 | |
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Brandberg area, Brandberg District, Erongo Region, Namibia size: approx. 3 cm |
| © michael berghäuser | Photo ID: 25742 View Count: 348 |
Quartz (Var: Amethyst) : SiO2 | |
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Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia site: approx. 8 cm |
| © michael berghäuser | Photo ID: 25686 View Count: 376 |
Quartz (Var: Amethyst) : SiO2 | |
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Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia size: approx. 8 cm |
| © michael berghäuser | Photo ID: 25717 View Count: 352 |
Quartz (Var: Amethyst) : SiO2 | |
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Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia size: approx. 8 cm |
| © michael berghäuser | Photo ID: 25747 View Count: 326 |
Ankerite : Ca(Fe2+ ,Mg,Mn2+)(CO3)2, Sphalerite : (Zn,Fe2+)S, Galena : PbS | |
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Bad Ems District, Lahn valley, Rhineland-Palatinate, Germany width: approx. 4 cm |
| © michael berghäuser | Photo ID: 26831 View Count: 455 |
Aragonite : CaCO3, Aragonite (Var: Flos Ferri) : CaCO3 | |
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Holzappel Mine, Holzappel, Laurenburg, Lahn valley, Rhineland-Palatinate, Germany Flos Ferri (in German "Eisenblüte)" from a German, famous locality Width about 8 cm |
| © michael berghäuser | Photo ID: 82884 View Count: 94 |
Calcite : CaCO3 | |
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Limestone quarries, Steeden, Limburg, Hesse, Germany Calcite on calcites Width about 6 cm |
| © michael berghäuser | Photo ID: 82882 View Count: 97 |
Calcite : CaCO3 | |
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Consolidierte Gute Hoffnung Mine, Werlau, St Goar, Hunsrück Mts, Rhineland-Palatinate, Germany size: approx. 12 cm |
| © michael berghäuser | Photo ID: 25716 View Count: 284 |
Calcite : CaCO3, Quartz : SiO2 | |
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Consolidierte Gute Hoffnung Mine, Werlau, St Goar, Hunsrück Mts, Rhineland-Palatinate, Germany size: approx. 8 cm |
| © michael berghäuser | Photo ID: 25750 View Count: 264 |
Calcite : CaCO3 | |
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Adolf-Helene Mine, Altlay, Zell, Hunsrück Mts, Rhineland-Palatinate, Germany size: approx. 8 cm |
| © michael berghäuser | Photo ID: 25740 View Count: 264 |
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