This specimen has a number of scalenohedral crystals of smithsonite. The
largest is 2.1 cm in length. Other minerals present in minor amounts are
mimetite
and
cerussite.
Cobaltoan smithsonite
Copper
inclusions in smithsonite
This specimen is smothered in crystals of cuprian smithsonite. On the back
side of the specimen is found crystals of
willemite
and small acicular masses of
rosasite.
Cobaltoan smithsonite
Origin: Tsumeb Mine, Tsumeb, Namibia, Africa
Sample size: 6.2 x 4.1 x 2.5 cm (top/2nd row), 2.7 x 2.4 x 1.7 cm (3rd row),
4.1 x 2.7 x 1.7 cm (4th row), 4.2 x 2.8 x 2.3 cm (5th/6th row), 10.4 x 8.5 x
4.4 cm (7th row), 9.7 x 7.4 x 4.8 cm (8th/9th row), 9 x 6.2 x 5.5 cm (bottom)
Photo courtesy of:
