Minerals. Friends of crystals of piritus with hatching on the edges.
Collection material for museums. It is located in a glass case, fixed by 4 metal parts of yellow colour (with the logo of the Sverdlovsk Mining and Metallurgical College) at the stand. On the side of the stand, on the blue background, the inscription: "Pires is the grey henchman of FeS2 (Fe 46%; S 53.4%) single-crystals in the form of cubes with hatching on the edges"/"Friends of crystals of pyrite raw material can be used for treatment of sulphuric acid"
Creation time: не установлено, не установлено
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