Aragonite Clusters

Calcium Carbonate, Orthorhombic CaCO3

Aragonite is formed in spring deposits and from sulfate-bearing saline solutions; in beds with gypsum, in cavities with lavas and in limestone caverns. It is trimorphous with calcite and vaterite. Aragonite is metastable under standard conditions and tends to revert to the stable calcite.

Rocks from Bob's Collection

Index of Specimen Images

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