Definition of calcite in English:



  • A white or colorless mineral consisting of calcium carbonate. It is a major constituent of sedimentary rocks such as limestone, marble, and chalk, can occur in crystalline form (as in Iceland spar), and may be deposited in caves to form stalactites and stalagmites.

    • ‘Abundant thin calcite and quartz veins cut the schists, and have been boudinaged and rotated parallel to the first cleavage.’
    • ‘The calcite formed scalenohedral and rhombohedral crystals on some of the quartz crystal groups.’
    • ‘Matrix minerals of the septaria are ferroan dolomite, quartz, calcite, and pyrite.’
    • ‘The nonzeolites apophyllite, calcite, and quartz commonly occur at many localities.’
    • ‘The walls of the cave were clean white limestone and decorated with pretty cave flowers and calcite crystals.’
    • ‘In some geodes, the brown calcite is completely hidden by clear calcite secondary growth.’
    • ‘Specimens of this unusual calcite are on display at the Mineral Museum.’
    • ‘The main gangue minerals that make up the vein are massive white calcite, quartz, and prehnite.’
    • ‘Experimental data ranges for both quartz and calcite rocks are indicated along the stress axis.’
    • ‘Strontium concentrations in seawater reflect the diagenesis of Sr-rich aragonite to calcite on continental shelves.’
    • ‘Analcime may also be associated with quartz crystals, calcite, and common opal.’
    • ‘Around one corner, the mine became snow white with calcite and sodium chloride.’
    • ‘The calcite and other such minerals suffered greatly from exposure to the weather.’
    • ‘Other than clay minerals, calcite and pyrite are the most common secondary minerals present.’
    • ‘Phosphate may also replace calcite or be precipitated instead of calcite in neutral or slightly acidic pH conditions.’
    • ‘The limestone is highly fractured and contains abundant calcite and quartz veins.’
    • ‘This cavity may then be filled with coal, calcite, siderite, or any other form of sediment.’
    • ‘Further up the core into the Waulsortian sequence, the limestones are cleaner and the breccia clasts are cemented by calcite.’
    • ‘The trick to recovering fine specimens is to collect the chunks of rock showing prehnite and calcite.’
    • ‘The major mineral constituents of coal balls are calcite, dolomite, ferroan dolomite and pyrite.’
    • ‘The sparry calcite is interpreted as a single phase of precipitation that infilled external moulds of the arthropod.’
    • ‘Zeolite veins appear to be later than prehnite veins, and calcite is the last mineral to form veins in the dyke samples.’
    • ‘Quartz is the dominant mineral in veins in siliceous rocks, calcite in limestones, and gypsum in gypsiferous sediments.’


Mid 19th century: coined in German from Latin calx, calc- ‘lime’ (see calx).