This specimen has an exposed vug filled with drusy
duftite
and rich ruby red crystals of cuprite. In incandescent light the crystal's
ruby red colour is readily visible. There is also some native
silver
visible in the matrix as small 1 mm grains. Ex. Gebhard collection
Variety chalcotrichite. Ex. Gebhard collection
This specimen consists of a thick wire of native
copper
upon which are deposited a few crystals of deep ruby red cuprite with
dodecahedral, octahedral, tetrahedral and cubic forms. Also found on the
specimen is some microcrystalline
ferrilotharmeyerite. The cuprite appears red in incandescent light. Ex.
Gebhard collection
This specimen has several brilliantly lustrous crystals of deep ruby red
cuprite to 1.1 cm across. There are also small groups of native
silver
crystals to 2 mm across on it. Ex. Gebhard collection
Ex. Gebhard collection
Origin: Tsumeb Mine, Tsumeb, Namibia
Sample size: 3.1 x 3.0 cm (top), 9.0 x 6.5 x 5.5 cm (2nd/3rd row), 8.1 x 5.3 x
4.5 cm (4th/5th row), 4 x 1.8 x 1.2 cm (6th/7th row), 5.5 x 4.6 x 2 cm
(8th/9th row), 2.5 x 2.5 x 1.8 cm (10th/11th row), 2.5 x 2.1 x 1.7 cm
(12th/bottom row)
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