At the College of Mining, MISiS, National University of Science and Technology, Moscow, Russian Federation.

Coal, with a layered structure |

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In a thin section, coal actually has a reddish true-colour |

Thin section |

Quartz crystal with chlorite (MISiS minerals museum) |

Andradite, calcium-iron-silicate (MISiS minerals museum) |

Andradite, calcium-iron-silicate (MISiS minerals museum) |

Andradite, calcium-iron-silicate (MISiS minerals museum). Member of the garnet family. |

Sphalerite zinc sulphide and calcium carbonate (MISiS minerals museum) |

Andradite, calcium-iron-silicate (MISiS minerals museum) |

Chrysotile in serpentenite, magnesium silicon oxide hydroxide, (MISiS minerals museum) |

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Quartz |

Calcite, calcium carbonate, (MISiS minerals museum) |

Astrophyllite, (MISiS minerals museum, Moscow, Russian Federation) |

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Quartz, K-field spar, albit (MISiS minerals museum, Moscow, Russian Federation) |

Quartz-amethyst (MISiS minerals museum, Moscow, Russian Federation) |

Calcite and quartz (MISiS minerals museum, Moscow, Russian Federation) |

Andradite (MISiS minerals museum, Moscow, Russian Federation) |

Calcite (MISiS minerals museum, Moscow, Russian Federation) |

Eudialyte (MISiS minerals museum, Moscow, Russian Federation) |

Calcite, Limonite, pyrite (MISiS minerals museum, Moscow, Russian Federation) |

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Chalcedonys silica (MISiS minerals museum, Moscow, Russian Federation) |

Siica quartz (MISiS minerals museum, Moscow, Russian Federation) |

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Skarn, often formed at the contact zone between intrusions of granitic magma bodies and carbonate sedimentary rocks such as limestone and dolostone. (MISiS minerals museum, Moscow, Russian Federation) |

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Kerite often formed at the contact zone between intrusions of granitic magma bodies and carbonate sedimentary rocks such as limestone and dolostone. |

Kerite often formed at the contact zone between intrusions of granitic magma bodies and carbonate sedimentary rocks such as limestone and dolostone. |

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Getchellite, orpiment (MISiS minerals museum, Moscow, Russian Federation) |

Celestine strontium sulphate (MISiS minerals museum, Moscow, Russian Federation) |

Fluorite calcium fluorite (MISiS minerals museum, Moscow, Russian Federation) |

Fluorite calcium fluorite (MISiS minerals museum, Moscow, Russian Federation) |

Fluorite calcium fluorite (MISiS minerals museum, Moscow, Russian Federation) |

Fluorite calcium fluorite (MISiS minerals museum, Moscow, Russian Federation) |

Sulphur (MISiS minerals museum, Moscow, Russian Federation) |

Gypsum, hydrated calcium sulphate (MISiS minerals museum, Moscow, Russian Federation) |

Chalcedony-chrisoprase silica (MISiS minerals museum, Moscow, Russian Federation) |

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Fluorite (MISiS minerals museum, Moscow, Russian Federation) |

Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) |

Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) |

Malachite Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) Also, quartz on the right |

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Breccia, chrysocolla, chalcedony, vanadinite, azurite, cuprite Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) |

Copper Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) |

Chalcedony on limestone organogenouse silica Calcite antimonite (MISiS minerals museum, Moscow, Russian Federation) |

Quartz (MISiS minerals museum, Moscow, Russian Federation) |

Quartz (MISiS minerals museum, Moscow, Russian Federation) |

fish imprint on limestone (MISiS minerals museum, Moscow, Russian Federation) |

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