Collection: Orange calcite

Orange calcite is a variety of the mineral calcite.
Mineral class: Carbonates
Colour cause: The vibrant orange hue comes from microscopic trace impurities of iron oxides,such as hematite.
Crystal system: Trigonal
Hardness: 3 on the MOHs scale
Rock formation: Orange calcite is formed primarily through chemical precipitation in a variety of geological settings.
Sedimentary: frequently found in limestone,chalk and cave deposits like stalactites and stalagmites.
Hydrothermal veins: found in low temperature hydrothermal veins occurring within limestone and other host rocks.
Metamorphic: can be found in marble,which forms when sedimentary limestone undergo immense heat and pressure.