Allophane from Mexico | Aussie Mineral Hub
World Minerals

Allophane

Allophane from Mexico

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    Allophane has short-range atomic order, it is a mineraloid, rather than a mineral, and can be identified by its distinctive infrared spectrum and its X-ray diffraction pattern. It forms waxy botryoidal to crusty masses with colour varying from white through green, blue, yellow, to brown.

    This specimen shows great under a UV light. I will get some pics of this up soon.

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

    Specimen Details

    Chemical Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O

    ID #: JG0009

    Colour: White, light-blue, green, brown

    Hardness: 3

    Acquisition Date: 06/08/2016

    Crystal System: Amorphous

    Lustre: Waxy

    Dimensions: 39mm x 28mm x 15mm

    Weight: 11g

    Location: Mexico

    Rarity of Mineral

    Rare

    Did you know!?
    Copper-bearing varieties can sometimes be confused with chrysocolla and colourless varieties can sometimes be confused with hyalite.