1) Glass rocks from outer space
Found on
https://www.crosswordclues.com/clue/tektites
Objects made from natural glass that are created from the impact of meteorites. They can be found on the Earth and the Moon.
Found on
http://www.moonconnection.com/moon-glossary.phtml
Natural, silica-rich, homogeneous glasses produced by complete melting, and dispersed as droplets during terrestrial impact events. Tektites range in color from black or dark brown to gray or green and most are spherical in shape. They have been found in four regional deposits or strewn fieldson the Earth's surface: North America, Czechoslovakia, I...
Found on
http://www.solarviews.com/eng/terms.htm
(Meteoric Silica Glass) Chemistry: Varies but is mostly silica glass with impurities of magnesium, iron and other elements. Class: Mineraloids Uses: As a gemstone and as collection specimens ·The Physical Properties of Tektities. Tektite Specimens Tektites are still poorly understood. They are irregularly- and at t...
Found on
https://www.encyclo.co.uk/local/23719
No exact match found.
