Oxides and Hydroxides
4th class - Oxides and hydroxides. They consists of oxides and hydroxides of metals and nonmetals. Their categorization is based on the metal/oxygen ratio. The hydroxides are classificed mainly on the basis of the presence of OH and/or H2O. Also arsenides (AsO3), selenides (SeO3), tellurides (TeO3) and iodides (IO3) belong to this class.
List of exhibitsadulár, jeden kus /11x6cm/ g8900záhněda, jeden kus /13x9cm/ g9013  opál - mléčný, jeden kus /14x9cm/ g9014 wolframit, jeden kus /8x7cm/ g9024 opál, jeden kus /18x12cm/ g9029 kassiterit, jeden kus /8x5cm/ g8753 jaspis, jeden kus /8x7cm/ g8757 achát, jeden kus /8x8cm/ g8758 achát, jeden kus /9x4cm/ g8761 ametyst, jeden kus /8x6cm/ g8762 achát, jeden kus /9x8cm/ g8763 křemen hvězdový, jeden kus /8x5cm/ g8768 jaspis, jeden kus /8x5cm/ g8769 achát, jeden kus /7x4cm/ g8773 kassiterit, jeden kus /6x4cm/ g8715 kassiterit, jeden kus /8x5cm/ g8716 psilomelan, jeden kus /10x6cm/ g8720 záhněda, jeden kus /11x6cm/ g8723 uraninit, jeden kus /6x4cm/ g8725 kassiterit, jeden kus /8x6cm/ g8727
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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]