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      5.třída - Nitrates, Carbonates 5th class - Nitrates, Carbonates (after Bernard et al. borates form an individual class). In these minerals the metallic element is accompanied by NO₃ (nitrates) or CO₂ (carbonates). The categorization of this class is based on the presence of additional anion (OH) or water H₂O. Rare sulphites with SO₃ belong to this class.

magnesit g1094	vřídlovec(sediment) g1758	hrachovec z travertinové kupy g1759	siderit - čočkovité krystaly g3619	siderit s ankeritem g4439
kalcit g6215	cerussit g8420	kalcit g9007	kalcit g9048	ankerit g9099
kalcit g9100	kalcit g9102	kalcit g9115

In the Virtual Museum there are total 249 samples