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Greenockite - a small beauty from the Tsumeb mine

Greenockite from Tsumeb forms beautiful hexagonal orange crystals in cavities of Cd rich galena. Often the specimens host brownish Cd rich smithsonite. Crystal size is usually around 50-100µm.

Studies under the electron beam reveal the details of the crystal surface. The pointy crystal tip sometimes look like if there was a small hole. A detail of the crystal tip is shown below. Collected backscattered electrons (small surface details are lost) and the SE electrons (small details of surface preserved) form these images.

The matrix and crystals, both sulfides, have enough electrical conductance so that the sample did not need a special preparation .

Album: 
Album: Greenockite -  a small beauty from the Tsumeb mine
Album: Greenockite -  a small beauty from the Tsumeb mine
Album: Greenockite -  a small beauty from the Tsumeb mine
Album: Greenockite -  a small beauty from the Tsumeb mine
Album: Greenockite -  a small beauty from the Tsumeb mine