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ARGONITE CLUSTER SPECIMEN 1436.40 CARATS RT 1351
- SKU
- Afmetingen (mm)
- x x mm
- Gewicht (cts)
- Type
- Specimen
- Kleuren
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This is a natural specimen from Morocco showing strong cluster of crystal development.
Size 79x56x39 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.
| Verzend provider | Verzending naar Australië | Verzending naar de rest van de wereld | Gecombineerde verzending ( Australië ) | Gecombineerde verzending (rest van de wereld) |
|---|---|---|---|---|
| FedEx |
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| Registered Shipping |
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- SKU
- Afmetingen (mm)
- x x mm
- Gewicht (cts)
- Type
- Specimen
- Kleuren
-
This is a natural specimen from Morocco showing strong cluster of crystal development.
Size 79x56x39 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.
| Verzend provider | Verzending naar Australië | Verzending naar de rest van de wereld | Gecombineerde verzending ( Australië ) | Gecombineerde verzending (rest van de wereld) |
|---|---|---|---|---|
| FedEx |
|
|
|
|
| Registered Shipping |
|
|
|
|
Gem Traders has cemented its position in the Australian market as a premier destination for gemstone....
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PositiefJust Right! Thank You!
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Positief
Wonderful transaction. Excellent communication & fast service
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Positief
Extremely fast shipping and the item was the exact same as described
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Received, thank you
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Positief
Very nice
Waarom overbieden gebruikers zichzelf?
Wanneer een bod wordt geplaatst, is dit het maximale bedrag dat een persoon bereid is te bieden voor het product. Ons systeem zal dan automatisch bieden namens de bieder, waarbij het bod stapsgewijs wordt verhoogd tot het maximum om hun positie als hoogste bieder te behouden.
Wanneer er een pictogram is dat 'Automatisch bod' aangeeft, betekent dit dat ons systeem actief biedingen plaatst voor de bieder op basis van hun maximale bod. Dit kan lijken alsof bieders zichzelf overbieden, maar het is gewoon een resultaat van het systeem dat het bod bijwerkt om de maximale limiet van de bieder weer te geven.
