Ammonite 'Tractor' Douvilleiceras mammilatum, 50mm x 40 x 26mm - 55.3 grams. Perfect for collection, exhibition...
Ammonite 'Tractor' Douvilleiceras mammilatum, 50mm x 40 x 26mm - 55.3 grams. Perfect for collection, exhibition...
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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)
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📋 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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A question? A comment? | Order and delivery information
A question? A comment? | Order and delivery information
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📦 Country of shipment: France 🇫🇷
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