Calcite & Thomsonite from Aranga Quarry New Zealand | Aussie Mineral Hub
Australian Minerals

Calcite & Thomsonite

Calcite & Thomsonite from Aranga Quarry New Zealand


    This is an interesting piece of Calcite & Thomsonite, the Thomsonite is kind of noodle like while having associated growth of needle like Calcite over the top. Thomsonite is generally known to have associations of Prehnite, Laumontite, Natrolite, Chabazite, Analcime, Apophyllite and Chlorite.

    I acquired this specimen from Tony at Mineral Store at the August 2016 Sydney Crystal Show.

    Specimen Details

    Chemical Formula: NaCa2Al5Si5O20 · 6(H2O)

    ID #: JG0011

    Colour: White, beige, cream, light yellow, light gray.

    Hardness: 5 – 5.5

    Acquisition Date: 06/08/2016

    Crystal System: Orthorhombic

    Lustre: Transparent to translucent

    Dimensions: 90mm x 76mm x 20mm

    Weight: 95g

    Location: Aranga Quarry, Northland New Zealand

    Rarity of Mineral


    Did you know!?
    Thomsonite is named in honour of Scottish mineralogist and chemist Thomas Thomson.