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Mineral Class 04: Oxides and hydroxides | |
The oxide mineral class includes those minerals in which the oxide anion (O2) is bonded to one or more metal ions. The hydroxide bearing minerals are typically included in the oxide class. The minerals with complex anion groups such as the silicates, sulfates, carbonates and phosphates are classed separately.
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Quartz with smoky phantom growth
Huaron Mines, Pasco Department, Peru. A small cabinet sized crystal group of quartz with smoky phantom growth. Measures approximately 90x80x70 mm and weighs approximately 0,320 kilogramme.
55.00 euro
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Needle quartz with purple-red lepidocrocite
Peru, Huaron mining complex This beauty comes from the mines in Peru, Huaron. Two generations needle quartz with purple-red lepidocrocite (or hematite) enclosures . The quartz sits on a pyrite matrix – on the needles some small chalcopyrite crystals. As far I can see only two of the smaller needles at the back-side (close to the edge) are broken. Measures approximately 110x70x50 mm and weighs approximately 0,43 kilogramme.
40.00 euro
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Light-colored rose quartz crystals
Lavra da Ilha, Taquaral, Jequitinhonha River, Minas Gerais, Brazil. Light-colored rose quartz crystals up to 10 mm long with thin layers Muscovite. Crystals: 2-7 mm. Measures approximately 80x50x35 mm and weighs approximately 0,160 kilogramme.
135.00 euro
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Clear quartz crystals with dark green Chlorite
Zillertal, Austria (Alps) Large decorative cabinet; Slab of matrix completely covered fully transparent quartz crystals only the tops are covered with dark green Chlorite. Measures approximately 320x160x70 mm and weighs approximately 3,5 kilogramme.
245.00 euro
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Natural citrine crystal
Democratic Republic of Congo (Zaïre) This big beautiful natural citrine crystal was found in Democratic Republic of Congo (Zaïre). Measures 100x55x55 mm and weighs 0,390 kilogramme.
128.00 euro
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Needle quartz crystals
Cavnic, Romania Natural beauty from Cavnic, Romania. A thin quartz matrix with at least two generation snow-white needle quartz crystals. Measures approximately 165x130x40 mm and weighs approximately 0,740 kilogramme.
32.00 euro
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Lustrous black Wolframite
Baia Sprie mine, Baia Sprie, Maramures, Romania. Lustrous black Wolframite crystal on quartz with some Calcite from Baia Sprie mine, Baia Sprie, Maramures, Romania. The wolframite crystal measures approximately 25 x 17 x 6 mm; whole specimen measures 80 x 45 x 40 mm and weighs approximately 0,130 kilogramme.
83.00 euro
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