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      7th Class - Sulfates, Selenates, Tellurates, Chromates, Molybdates, Wolframates This class represents great group of minerals with respective complexes: SO₄, TeO₄, CrO₄, MoO₄, WO₄ tetrahedra. This class is classified into groups of hydrous and anhydrous minerals.

baryt

No. of sample:	g7512
Mineral:	baryt, HOR
Description:	jeden kus 1Ox8cm
Localization:	Kladno - Dubí, důl Prago
Origin:	coll.V.Šafránek
Author:
Comment:	tabulkovité krystaly na povrchu porušeny korozí,

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