BORATES, CARBONATES, NITRATES

Minerals in the borate class feature boron-oxygen groups that can connect through polymerization, creating chains, sheets, and various isolated structures. Similar to how silicates' silicon-oxygen (SiO4) tetrahedrons link up, the borates' (BO3)3– triangular groups also form connections. A single oxygen atom acts as a bridge between two boron cations (B3+), allowing the BO3 groups to form larger structures like double triangles, triple rings, sheets, and chains. This is possible because the small boron cation has a bond strength with oxygen that is precisely half of the bond energy of the oxygen ion.

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  • CALCITE PSEUDO after ANDRADITE

    CALCITE PSEUDO after ANDRADITE
    $159.50 AUD

  • CALCITE, DOUBLE SPATE (LARGE CABINET)

    CALCITE, DOUBLE SPATE (LARGE CABINET)
    $225.50 AUD
  • Sold out

    CHABAZITE with CALCITE (plus a green, so far unidentified, mineral (needles) (small cabinet)

    CHABAZITE with CALCITE (plus a green, so far unidentified, mineral (needles) (small cabinet)
    $170.50 AUD

  • CHALCOPHYLLITE, MALACHITE, CUPRITE LARGE CABINET

    CHALCOPHYLLITE, MALACHITE, CUPRITE LARGE CABINET
    $1,023.00 AUD

  • CHALCOPYRITE, PYRITE, MANGANO CALCITE, SPHALERITE with QUARTZ (small cabinet)

    CHALCOPYRITE, PYRITE, MANGANO CALCITE, SPHALERITE with QUARTZ (small cabinet)
    $841.50 AUD

  • CHALCOPYRITE, PYRITE, MANGANOCALCITE with QUARTZ (cabinet)

    CHALCOPYRITE, PYRITE, MANGANOCALCITE with QUARTZ (cabinet)
    $874.50 AUD

  • CHALCOPYRITE, SPHALERITE, PYRITE, QUARTZ, CALCITE (large cabinet)

    CHALCOPYRITE, SPHALERITE, PYRITE, QUARTZ, CALCITE (large cabinet)
    $715.00 AUD

  • CINNABAR (CINNABARITE or MERCURBLENDE) on CALCITE SMALL CABINET

    CINNABAR (CINNABARITE or MERCURBLENDE) on CALCITE SMALL CABINET
    $324.50 AUD

  • COBALTOAN CALCITE (small cabinet)

    COBALTOAN CALCITE (small cabinet)
    $170.50 AUD

  • COLEMANITE (LARGE CABINET; UNUSUAL MASSIVE CRYSTALS)

    COLEMANITE (LARGE CABINET; UNUSUAL MASSIVE CRYSTALS)
    $1,358.50 AUD

  • COLEMANITE (miniature)

    COLEMANITE (miniature)
    $104.50 AUD

  • COLEMANITE (UNUSUAL MASSIVE CRYSTALS) (large cabinet)

    COLEMANITE (UNUSUAL MASSIVE CRYSTALS) (large cabinet)
    $825.00 AUD

  • DATOLITE with QUARTZ (cabinet)

    DATOLITE with QUARTZ (cabinet)
    $302.50 AUD

  • DIOPTASE with CALCITE (miniature)

    DIOPTASE with CALCITE (miniature)
    $401.50 AUD
  • Sold out

    FERROAN CALCITE with CHABACITE-Ca

    FERROAN CALCITE with CHABACITE-Ca
    $275.00 AUD

  • FLUORITE (DEEP PURPLE) on CALCITE (small cabinet)

    FLUORITE (DEEP PURPLE) on CALCITE (small cabinet)
    $313.50 AUD

  • FLUORITE on CALCITE (large cabinet)

    FLUORITE on CALCITE (large cabinet)
    $753.50 AUD

  • FLUORITE, RUBY JACK SPHALERITE, DOLOMITE (miniature)

    FLUORITE, RUBY JACK SPHALERITE, DOLOMITE (miniature)
    $544.50 AUD

  • HOWLITE CRYSTALS (extremely rare) on DOLOMITE (miniature)

    HOWLITE CRYSTALS (extremely rare) on DOLOMITE (miniature)
    $423.50 AUD

  • LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet

    LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet
    $676.50 AUD

  • LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet

    LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet
    $687.50 AUD

  • LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet

    LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE small cabinet
    $533.50 AUD

  • LAZULITE, SCORZALITE with GORMANITE (EXTREMELY RARE) with QUARTZ NEEDLES and CALCITE cabinet

    LAZULITE, SCORZALITE with GORMANITE (EXTREMELY RARE) with QUARTZ NEEDLES and CALCITE cabinet
    $825.00 AUD

  • MAGNETITE with CALCITE (small cabinet)

    MAGNETITE with CALCITE (small cabinet)
    $247.50 AUD