Listing Description:
Chrysocolla is a hydrated copper phyllosilicate mineral with formula: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
(x<1)[1] or (Cu,Al)2H2Si2O5(OH)4·nH2O.[3] The structure of the mineral
has been questioned, as spectrographic studies suggest material identified as
chrysocolla may be a mixture of the copper hydroxide spertiniite and chalcedony.
Detailed Description
Properties
Chrysocolla has a cyan (blue-green)
color and is a minor ore of copper, having a hardness of
2.5 to 3.5.
Name and
discovery
The name comes from the Ancient Greek: χρυσός
κολλα (chrysos kolla), "gold glue",[5] in
allusion to the name of the material used to solder gold, and was first used
by Theophrastus in 315 BCE.
Formation and
occurrence
It is of secondary origin and forms in the oxidation zones
of copper ore bodies.
Associated minerals are quartz, limonite, azurite, malachite, cuprite, and other secondary copper minerals.
It is typically found as botryoidal or
rounded masses and crusts, or vein fillings. Because of its light color, it is
sometimes confused with turquoise.
Notable occurrences include Bacan Island Indonesia, Israel, Democratic Republic of Congo, Chile, Cornwall in England,
and Arizona, Utah, Idaho, Colorado, New Mexico, Michigan,
and Pennsylvania in the United States.
PRICES
$22/KG OR $10/IB
For more information:
mobile: +2348039721941
contact person: emeaba uche
e-mail: emeabau@yahoo.com
website: www.franchiseminerals.com
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