Skarn deposits Skarn deposits are formed in zones of contact between igneous rocks and their host sedimentary rocks
The magnificent emerald stone belongs to the precious gems of the first order, that is, it is valued as follows:
Synonyms: Thin mixtures of native copper and cuprite were called cuprocuprite (Vernadsky, 1910). Whitneyite (Ghent,
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Hello, dear readers and admirers of natural unique jewelry! Today we will talk about the king and
Today, in any archaeological museum in the world you can see displays of objects from ancient times. Already
Category Oxides (minerals) Name in English. Magnetite Formula FeFe2O4 Group Spinel Group Color Black Color
Graphite is a mineral from the class of native elements, one of the allotropic modifications of carbon. Common in
Demantoid (garnet group). Color: emerald green to golden green. Hardness: 6.5–7 points. Density: 3.83–3.85 g/cm³. Word
Blue agate or sapphirine is a unique variety of quartz. The stripes give the mineral some kind of heavenly airiness
