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.

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