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$29.00 AUD
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ARGONITE CLUSTER SPECIMEN 1315.85 CARATS RT 1345

3838
2

SKU
Dimensioni (mm)
84.000 x 71.000 x 39.000mm
Peso (cts)
1315.000
Colori

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
Posseduto da gem traders

  • shane0
    shane0
    Positivo

    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...

  • novarew
    novarew
    Positivo

    Always reliable, beautiful items, my fav store ever !

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Valido fino a
4th Apr 2025

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Spedizione:
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Panoramica

Tipo di elenco : Standard
Codice prodotto : 15861
Inizia : 29th March 2025 04:19 pm AEST
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