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Discussieer hier over mineralen in het algemeen
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Caveman
- Berichten: 1706
- Lid geworden op: 18 mar 2007, 20:08
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door Caveman » 10 okt 2019, 19:36
Kiezel, Kwarts SiO2 naar mijn mening.
To share or not to share, that's the question!