This specimen of
copper
has been partially altered to
cuprite
and then coated with velvety malachite. There is remnant
calcite
attached also.
Malachite on
copper
This specimen is a pseudomorph of malachite and
cuprite
after copper
with some minor
copper
still left in the interior. The surface of the specimen has a thin coat of
micro
calcite crystals. This specimen was cemented to a
calcite
base by Bill Swanepoel who was a miner at the mine.
Origin: Onganja Mine, Seeis, nr. Windhoek, Namibia, Africa
Sample size: 6.2 x 5.1 x 2.5 cm (top/2nd row), 6.7 x 3.5 x 2.7 cm (3rd/4th
row), 6.2 x 4 x 3.7 cm (5th/6th row), 5.5 x 3.5 x 1.3 cm (7th row), 6.1 x 3.5
x 2.6 cm (bottom)
Photo courtesy of:
