词条 | Strewn-fields of tektites |
释义 | Strewn-fields of tektites Table Strewn-fields of tektites types names age (millions of years) microtektites Muong-Nong splash-form australite remarks North American tektites, viz., bediasites (Texas), georgiaites 35.4 — X X — very low in magnesium, calcium moldavites 14.6 ? X X X found in Czech Republic; rich in silicon, potassium Ivory Coast tektites 1.3 X — X ? sodium more abundant than potassium Australasian tektites, viz., australites, billitonites, indochinites, javanites, lei-gong-mo (China) philippinites (=rizalites), thailandites 0.80 X X X X See as table: ![]() |
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