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Voyager Rare Books Maps & Prints » Products » Minerals

Minerals

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  • Queensland Mineral – Rain Forest Jasper [Spherulitic Rhyolite] from the Mount Hay Volcano

    Queensland Mineral – Rain Forest Jasper [Spherulitic Rhyolite] from the Mount Hay Volcano

    Mount Hay is to the west of Rockhampton in Queensland. It is an extinct volcano and it was the volcanic environment that gave rise to this unique form of rhyolite. It is called rainforest jasper because of the rainforest like colour palette.

    The underlying rock form is high in silicon and the long cooling process from the volcanic activity allowed for numerous inclusions of quartz, chalcedony etc.

    A sizeable example 14.0cm by 9.0cm, 1.0cm deep, weighing 390gm

    Striking Mount Hay Jasper – a nice piece

    $50.00

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  • Botryoidal Goethite – Yaraka Queensland

    Botryoidal Goethite – Yaraka Queensland

    The mineral Goethite or iron oxy-hydroxide here in a nice botryoidal (resembling grapes) crystal form.

    Found in the Yaraka Boulder Opal Field 100km east of Blackhall, Queensland. Last count remote Yaraka had an official population of 20 – they all get along.

    Small fist sized weighing 350 gm.

    Good lustre to the botryoidal form

    $35.00

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  • Australian Mineral Specimen – Gypsum Selenite with Copper

    Australian Mineral Specimen – Gypsum Selenite with Copper

    A very good example of gypsum in selenite form with even crystals of 5mm nicely impregnated with copper salts giving a soft green hue.

    Very good example from Pernatty Lagoon, Stuart Shelf South Australia.

    Nice crystals with even copper tone

    $40.00

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  • Australian Mineral Specimen – Prehnite – Mullaley

    Australian Mineral Specimen – Prehnite – Mullaley

    A nice example of the mineral Prehnite – Calcium Aluminium Silicate [Ca2Al(AlSi3O10)(OH)2] in a botryoidal (grape like) formation. With an even green colouring.

    From Mullaley NSW

    Nice example of the botryoidal form

    $40.00

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