The name Malachite is derived from
the Greek word "Malakhe" which means marshamallow plant because of the
green color. This stone has a long history with the Egyptian cultures
going as far back as 4000 B.C. when it wa heavily mined near the Suez
Canal. The stone was used for many different forms of ornamental
applications such as in statues and jewelry. One unique use was in
makeup the Egyptian women used as eye makeup.
Malachite is a carbonate mineral, copper(II)
carbonate hydroxide Cu2CO3(OH)2. Malachite has a hardness between 3.5
and 4.
Malachite often results from weathering of copper ores and
is often found together with azurite (Cu3(CO3)2(OH)2), goethite, and
calcite. Except for the iridescent green colour, the properties of
malachite are very similar to those of azurite and aggregates of the two
minerals together are frequently found, although malachite is more
common than azurite. Typically associated with copper deposits
associated with limestones, the source of the carbonate.Mostly it
was used as a mineral pigment in green paints from antiquity until about
1800. The pigment is moderately lightfast, very sensitive to acids and
varying in colour. The natural form was being replaced by its synthetic
form, verditer amongst other synthetic greens.
|
CHEMICAL FORMULA |
Cu2(CO3) (OH)2 |
|
COMPOSITION |
Molecular Weight = 221.12gm |
|
COPPER |
57.48 % Cu 71.95 % CuO |
|
HYDROGEN |
0.91 % H
8.15% H20 |
|
CARBON
|
5.43 % c
19.90 % CO2 |
|
OXYGEN |
36.18 % O |
Malachite Rough
Stocks.
\
OUR STOCKS /
ORDER SPECIFICATIONS
Smaller Pieces - 5 grams
To 50 grams
Larger Pieces - 100 grams TO 2
Kilograms single pieces.
Minimum Supply Per Order - 100
kilograms.
Maximum Order Supply - 5
Tons
PRICE & SHIPPING COSTS (FOB/CIF), SEND US AN
EMAIL FOR THE QUOTATION.
sales@seabgems.com
