Aragonite from Spain | Aussie Mineral Hub
World Minerals


Aragonite from Molina de Aragon, Spain


    Aragonite Info

    Aragonite and the more common mineral Calcite are polymorphous to each other. Although Aragonite and Calcite contain the same chemical composition, they differ in their crystal structure. Aragonite forms orthorhombic crystals, whereas Calcite forms trigonal crystals.

    These 2 specimens look totally different from one another, yet if you look at the smaller piece, it has heaps of orthorhombic crystals compared to the single orthorhombic crystal with the bigger piece.

    I acquired a small light brown round piece from Crystal Castle when on a road trip up to Byron Bay around Easter in 2015. This chunky specimen came from Greg at Blue Gems at the August 2016 Sydney Crystal Show.

    Specimen Details

    Chemical Formula: CaCO3

    ID #: JG0004

    Colour: Clear to light brown

    Hardness: 3.5 – 4

    Acquisition Date: 05/04/2015

    Crystal System: Orthorhombic

    Lustre: Vitreous, dull

    Dimensions: 60mm x 50mm x 35mm

    Weight: 98g

    Location: Molina de Aragon, Spain

    Rarity of Mineral


    Did you know!?
    Aragonite frequently contains sand inclusions, which give specimens a brown colour.