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Ammonite 'Tractor' douvilleiceras mammilatum, 50mm x 40 x 26 - 55.3 grams. Perfect for collection, exhibition...

Ammonite 'Tractor' douvilleiceras mammilatum, 50mm x 40 x 26 - 55.3 grams. Perfect for collection, exhibition...

€28,70 EUR
€28,70 EUR
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    About the product:

    🪨 Fossil Type: Ammonite 'Tractor' douvilleiceras mammilatum

    🌍 ⛏️ Origin: Majunga, Madagascar

    📐 💎 Dimensions: 55 millimeters long x 40 wide x 26 thick

    ⚖️ Weight : 55.3 grams

    ✨ Finish: natural

    🔬 Treatment: None

    🎁 Comes with a Gem and Zen certificate, ideal for giving as a gift or treating yourself!

    ✦ Uses:

    Highly ornamented, the Douvilleiceras shell is prized by collectors.

    Sometimes used in fossil jewelry or decoration, especially after polishing.

    Evidence of the rapid evolution of ammonites in the Cretaceous.

    Allows precise stratigraphic dating (guide fossil)

    .

    📋 Mineralogical sheet:

    Appearance Tractor Ammonite (Douvilleiceras mammillatum)
    Category Fossil / Marine Cephalopod (Ammonite)
    Geological age Lower Cretaceous (~100 – 120 million years ago)
    Chemical composition Mainly aragonite (CaCO₃), often replaced by calcite, silica or pyrite during fossilization
    Crystal system Orthorhombic (aragonite)
    Hardness (Mohs) 3.5 – 4
    Density 2.6 – 2.9
    Color Beige, brown, black, gray, sometimes with colored patina due to surrounding minerals
    Glow Matte to pearly depending on fossilization
    Transparency Opaque
    Special feature Fossil with a very robust, thick shell decorated with ribs and tubercles reminiscent of tractor wheels → hence its name
    Main deposits Madagascar (very famous), Morocco
    Discovery / History Species scientifically described in the 19th century; today highly sought after in collections for its atypical morphology
    Use Collection, decoration, lithotherapy (fossil energy, stability)
    Virtues (lithotherapy) Provides grounding, stability, protection and perseverance ; supports in long and difficult trials
    Associated Chakras Root (anchoring), Solar Plexus (inner strength, endurance)
    Astrological signs Capricorn, Taurus, Scorpio
    Purification Distilled water, gentle fumigation (sage, incense)
    Recharging Soft sunlight, waxing moon, quartz clusters
    Short story The “Tractor” Ammonite is an impressive variety with its massively ribbed shell , used as a symbol of strength, perseverance and memory of the Earth .

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