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Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Cross section of a zonar quartz crystal. 8 cm
© Volker Betz (2010)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Crystal of bariopharmacosiderite in a vug of quartz. Collected from an old abandoned quarry in 1995. In fresh state the crystal was green, which converted to yellow brown within a year. The crystal was immersed in water (set to PH 2 with hydrochloric acid) for 3 days and the colour changed back to green with a brownish core.
© Volker Betz (2017
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Crystal of bariopharmacosiderite in a vug of quartz. Collected from an old abandoned quarry in 1995. In fresh state the crystal was green, which converted to yellow brown within a year.
© Volker Betz (2017)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Broken quartz crystal with zonar structure from a hydrothermal breccia. The broken parts are polished. The crystal faces are partly covered with hydrothermal crystal debris.
© Volker Betz (2021)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negative rhombohederon, mos likely from a dissolved carbonate.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negative rhombohederons, most likely from dissolved carbonates.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negatives of rhomboherons, most likely dissolved carbonates.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz plate with negatives of rhomboherons of most likely dissolved carbonates.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Cross section of a zonar quartz crystal. 8 cm
© Volker Betz (2010)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Crystal of bariopharmacosiderite in a vug of quartz. Collected from an old abandoned quarry in 1995. In fresh state the crystal was green, which converted to yellow brown within a year. The crystal was immersed in water (set to PH 2 with hydrochloric acid) for 3 days and the colour changed back to green with a brownish core.
© Volker Betz (2017
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Crystal of bariopharmacosiderite in a vug of quartz. Collected from an old abandoned quarry in 1995. In fresh state the crystal was green, which converted to yellow brown within a year.
© Volker Betz (2017)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Broken quartz crystal with zonar structure from a hydrothermal breccia. The broken parts are polished. The crystal faces are partly covered with hydrothermal crystal debris.
© Volker Betz (2021)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negative rhombohederon, mos likely from a dissolved carbonate.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negative rhombohederons, most likely from dissolved carbonates.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz with negatives of rhomboherons, most likely dissolved carbonates.
© Volker Betz (2023)
Monstranzenbaum, Frauenstein quartz vein, Wiesbaden-Frauenstein, Wiesbaden, Darmstadt, Hesse, Germany
Iron stained quartz plate with negatives of rhomboherons of most likely dissolved carbonates.
© Volker Betz (2023)
