E-mail: osvald.petr@mineralos.cz
(Mg,Al)2Si4O10(OH) .4H2O
Foto - Osvald Petr
499, Palygorskit (Palygorskite), Rabí, Čechy (Bohemia) CZ, 50×35×20 mm,
2,0
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E-mail: osvald.petr@mineralos.cz