No. 81683307
Colombianite, a rare pseudo-tektite from Colombia - Height: 31 mm - Width: 19 mm - 14.2 g
No. 81683307
Colombianite, a rare pseudo-tektite from Colombia - Height: 31 mm - Width: 19 mm - 14.2 g
Colombian pseudo-tektites are such clean that they are even suitable for faceting!
About Colombianite
Colombianite pseudo-tektites are found in the departments of Antioquia and Caldas in Colombia.
Formation
The type of rock that constitutes a Colombianite pseudo-tektite is called quartz porphyry. This type of rock is made up of large crystals of quartz embedded in a smaller quantity of feldspar. The quartz crystals give the rock a glassy appearance, and the overall composition is similar to that of granite.
/Every piece comes from my own collection./
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