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• Ruda,struska,hornina?????

Ruda,struska,hornina?????

Asi 5x5x3cm nemagnetické,poměrně valká hustota,krystalykřemene v kovu a něco jako měď,rez to asi nebude.

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Identified category:	All > Fossils and Fossils
User feedback:	Fossils and Fossils (2 názory), Views, photographs, writings, documents (1 názor) kuba66521: Views, photographs, writings, documents, Schonauer: Fossils and Fossils, sock: Fossils and Fossils

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piryovec

29 October 2014

Asi struska

Kosa

29 October 2014

Je to dost těžké: Struska je vetšinou odpad z metalurgické výroby-špínaa jiné . A co ty křemeny?

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