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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.

siderit - čočkovité krystaly

No. of sample:	g3619
Mineral:	siderit, HOR
Description:	jeden kus
Localization:	Bohutín, šachta 25.únor, Klž, 33.p.J
Author:	leg.Píša,1963
Comment:	na siderit nasedají druzy krystalků manganokalcitu siderit je místy silně metasomován křemenem s vtroušeným boulangeritem i vzácným galenitem II

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