テクタイト
1. tektite
2. TektiteTektites (from Greek τεκτός tektos, molten) are natural glass rocks up to a few centimeters in size, which most scientists argue were formed by the impact of large meteorites on Earth's surface. Tektites are typically black or olive-green, and their shape varies from rounded to irregular. Tektites are among the "driest" rocks, with an average water content of 0.005%. This is very unusual, as most if not all of the craters where tektites may have formed were underwater before impact.
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Read “テクタイト” on Japanese Wikipedia
Read “Tektite” on DBpedia
Read “Tektite” on English Wikipedia
Read “テクタイト” on Japanese Wikipedia
Read “Tektite” on DBpedia
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