Malachite after Azurite 2. Native Silver

  1. mbig
    A wonderful Mineral specimen on ebay.
    I'm not the buyer/seller/etc but watch and occasionally buy some interesting items.

    Superb Old Malachite After Azurite with Quartz Crystal Mexico EX Nikischer | eBay

    Quote Originally Posted by description
    Zacatecas, Mexico
    7.2cm x 5.7cm x 4.7cm

    An amazing, old time example of malachite after azurite from this seldom referenced locale!
    This specimen consists of a cluster of quartz crystals sticking out of a dense cluster of dramatically elongated prismatic crystals of malachite after azurite and azurite crystals!
    While this specimen might at first appear to simply be primary, acicular malachite from a distance - further examination reveals that these are actually razor-sharp, GEMMY pseudomorphs of bright green malachite AFTER azurite!
    Upon close inspection with a loupe or a scope one can find some crystals that still show partial areas of azurite and see some sharp, lustrous terminations and faces on the crystals! This is truly incredible material indeed! Very show and attractive old time specimen!.."

    Pseudomorph - Wiki
    In mineralogy, a pseudomorph is a mineral or mineral compound that appears in an Atypical form (crystal system), resulting from a Substitution process in which the appearance and dimensions remain constant, but the original mineral is Replaced by another. The name literally means "false form"..."
  2. mbig
    Classic Old Native Silver Wire Cluster Bulldog MT Mine Colorado EX Nikischer | eBay
    A classic, old time example of native silver from this historic Colorado locale. This specimen consists of a dense tangle of native silver wires. Aside from just a tiny bit of matrix, this specimen is almost entirely comprised of native silver. The wires are thick and significant. Gorgeous old time material...

    Bulldog Mountain Mine, Creede District, Mineral Co., Colorado
    2.3cm x 1.4cm x .75cm
Results 1 to 2 of 2