Klaas
..........................................3
Looduslik klaas.....................................................................................................................................3
Obsidiaan.........................................................................................................................................3
Tektiidid...........................................................................................................................................4
Fulguriit...........................................................................................................................................5
Allikad:.................................................................................................................................................5
Klaas
Klaas on läbipaistev, tugev, raskesti kuluv materjal, millest saab valmistada siledaid ja mitte läbilaskvaid
pindu
annaabi.ee 
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