ARGONITE CLUSTER SPECIMEN 1315.85 CARATS RT 1345
- SKU
- Dimensiones (mm)
- 84.000 x 71.000 x 39.000mm
- Peso (cts)
- 1315.000
- Colores
-
This is a natural specimen from Morocco showing strong cluster of crystal development.
Size 84x71x39 mm app
Aragonite occurs in two distinct places Spain and Morocco. This crystal cluster is from a pocket in a Moroccan lava bed, where it formed at high pressure and relatively low temperature. At surface conditions, aragonite is actually metastable, and heating it to 400°C will make it revert to calcite. The other point of interest about these crystals is that they are multiple twins that make these pseudo-hexagons. Single aragonite crystals are shaped more like tablets or prisms.
Aragonite is calcium carbonate with the same chemical formula as calcite, but its carbonate ions are packed differently. That is, aragonite and calcite are polymorphs of calcium carbonate. It is harder than calcite (3.5 to 4, rather than 3, on the Mohs scale) and somewhat denser, but like calcite it responds to weak acid by vigorous bubbling. You may pronounce it a-RAG-onite or AR-agonite, though the majority of American geologists use the first pronunciation. It is named for Aragon, in Spain, where notable crystals occur.
- SKU
- Dimensiones (mm)
- 84.000 x 71.000 x 39.000 mm
- Peso (cts)
- 1315.000
- Colores
-
This is a natural specimen from Morocco showing strong cluster of crystal development.
Size 84x71x39 mm app
Aragonite occurs in two distinct places Spain and Morocco. This crystal cluster is from a pocket in a Moroccan lava bed, where it formed at high pressure and relatively low temperature. At surface conditions, aragonite is actually metastable, and heating it to 400°C will make it revert to calcite. The other point of interest about these crystals is that they are multiple twins that make these pseudo-hexagons. Single aragonite crystals are shaped more like tablets or prisms.
Aragonite is calcium carbonate with the same chemical formula as calcite, but its carbonate ions are packed differently. That is, aragonite and calcite are polymorphs of calcium carbonate. It is harder than calcite (3.5 to 4, rather than 3, on the Mohs scale) and somewhat denser, but like calcite it responds to weak acid by vigorous bubbling. You may pronounce it a-RAG-onite or AR-agonite, though the majority of American geologists use the first pronunciation. It is named for Aragon, in Spain, where notable crystals occur.
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Positivo
Thank you it's exactly as the picture love the design of the necklace
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Positivo
Thank you it's exactly as the picture love the design of the ring and necklace
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Positivo
Thank you it's exactly as the picture love the design of the ring and necklace
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Positivo
Thank you it's exactly as the picture teardrop necklace
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Neutral
One fossil is missing, another has fallen, a label has dropped into the frame, quite a few of the labels can't be read. I thought the fossil frames would be different, most but not all of them are the same. They sent two lovely bonus fossils