自然的喜马拉雅黄铁矿化菊石化石 - 贝壳化石 (没有保留价)





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天然喜马拉雅地区的闪金蓝色阿蒙尼特化石,保留在原始页岩基质中,侏罗纪(约1.5–2亿年前),经保藏处理,真实且原装,作为匹配分体对呈现。
卖家的描述
Exceptional natural pyritized ammonite preserved in its original shale matrix from the renowned Spiti Valley Himalayan fossil deposits.
This specimen is presented as a matching split pair, revealing both positive and negative impressions of the shell with outstanding detail.
The ammonite displays strong ribbing and excellent preservation of the whorls, enhanced by a complete and natural pyritization process.
The metallic golden-grey appearance is entirely natural and results from mineral replacement during fossilization. The specimen has not been cleaned, brushed, or artificially enhanced with brass brushes or any other mechanical treatment, preserving its authentic surface and natural crystalline texture.
Collected from the Spiti-Tethys sedimentary sequence, these ammonites lived in the ancient Tethys Ocean during the Jurassic Period, approximately 150–200 million years ago, long before the uplift of the Himalayas.
Features:
* 7 cm concretion
* Complete natural pyritization
* Matching split pair (counterpart included)
* No artificial polishing or brass-brush treatment
* Excellent shell ornamentation and ribbing
* Origin: Spiti Valley, Himalayan Tethyan Basin
* Age: Jurassic, approx. 150–200 million years
A highly decorative and scientifically interesting specimen, representing the marine life of the ancient Tethys Ocean and the geological history of the Himalayas. Ideal for collectors of fossils, pyritized specimens, and natural history enthusiasts.
卖家故事
Exceptional natural pyritized ammonite preserved in its original shale matrix from the renowned Spiti Valley Himalayan fossil deposits.
This specimen is presented as a matching split pair, revealing both positive and negative impressions of the shell with outstanding detail.
The ammonite displays strong ribbing and excellent preservation of the whorls, enhanced by a complete and natural pyritization process.
The metallic golden-grey appearance is entirely natural and results from mineral replacement during fossilization. The specimen has not been cleaned, brushed, or artificially enhanced with brass brushes or any other mechanical treatment, preserving its authentic surface and natural crystalline texture.
Collected from the Spiti-Tethys sedimentary sequence, these ammonites lived in the ancient Tethys Ocean during the Jurassic Period, approximately 150–200 million years ago, long before the uplift of the Himalayas.
Features:
* 7 cm concretion
* Complete natural pyritization
* Matching split pair (counterpart included)
* No artificial polishing or brass-brush treatment
* Excellent shell ornamentation and ribbing
* Origin: Spiti Valley, Himalayan Tethyan Basin
* Age: Jurassic, approx. 150–200 million years
A highly decorative and scientifically interesting specimen, representing the marine life of the ancient Tethys Ocean and the geological history of the Himalayas. Ideal for collectors of fossils, pyritized specimens, and natural history enthusiasts.

