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$29.00 AUD
Prix

ARGONITE CLUSTER SPECIMEN 1315.85 CARATS RT 1345

3889
2

UGS
Dimensions (mm)
84.000 x 71.000 x 39.000mm
Poids (cts)
1315.000
Couleurs

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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ARGONITE CLUSTER SPECIMEN 1315.85 CARATS RT 1345
Queensland, Australia
Propriété de gem traders

  • shane0
    shane0
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    Hi. Once I seen this tektite I knew I needed to purchase it. It arrived very quickly well packaged gift boxes. Thanks guys great job...

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15%
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Économisez $4.35 sur ce produit
Valable jusque
7th May 2025

Les détails d'expédition

Expédition:
$16.00 21 les jours via Registered Shipping
Expédié depuis:
Australia

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Aperçu

Type d'inscription : Standard
Identifiant du produit : 15861
Départs : 26th April 2025 04:19 pm AEST
* Tous les prix sont en AUD

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