Saturday, February 2, 2019

Tektite, an interesting rock

Tektites (pronounced tek-tites) are the by-products of meteorite impacts on Earth.  Composed of gravel-sized, natural glass particles, which are predominantly black, they can also be brown, gray, or green. They made up of natural glass formed from molten terrestrial debris thrown into the air after a meteor strikes the ground. Tektites have no crystalline structure because they cool so rapidly, thus crystals cannot grow. In that sense, they are similar to obsidian (volcanic glass), but tektites have lower water content than obsidian glass.
A tektite (4 cm length) from Guang Dong, Kwangtung Province, China.
Tektites occur within “strewn-fields” associated with meterorite impact craters. Some of the more famous “strewn-fields” are in southern China, the Czech Republic, and the Ivory Coast of Africa (Ghana).


If you check online, you can find tektites for sale, at a modest price in most cases. For more information about tektites, see <www.britannica.com>

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