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Desert Rose

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Rocks and Minerals223 of 291What stone is this?Flint arrowheads.
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    Posted 8 years ago

    bobbee
    (105 items)

    Another charity shop buy for £1, I know little about these so include a excerpt from "Wikipedia".

    Desert rose is the colloquial name given to rose-like formations of crystal clusters of gypsum or baryte which include abundant sand grains. The 'petals' are crystals flattened on the c crystallographic axis, fanning open in radiating flattened crystal clusters.

    The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. The crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom. Gypsum roses usually have better defined, sharper edges than baryte roses. Celestine and other bladed evaporite minerals may also form rosette clusters. They can appear either as a single rose-like bloom or as clusters of blooms, with most sizes ranging from pea sized to 4 inches (10 cm) in diameter.

    Thanks for looking.

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    Comments

    1. TassieDevil TassieDevil, 8 years ago
      How interesting!!!
    2. fleafinder fleafinder, 8 years ago
      very educational!! thank you:D
    3. bobbee bobbee, 8 years ago
      Thanks flea and tassie!
      Thanks all for the loves.

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