Araucaria wood, polished, Triassic; MDG
Araucarias are conifers with hard, pointed and blade-shaped leaves. Currently they are only found in South America and Oceania, which is a relic of their distribution on the southern prehistoric continent of Gondwana, that split into South America, Africa, India, Antarctica and Australia.
Their wood fossilized as it became saturated with silica-containing water in the absence of oxygen. This water precipitated in the interstices as quartz, chalcedony or opal and replaced the wood, which was slowly decomposed by anaerobic bacteria. Other minerals in the water, mostly iron oxides, provided the coloration.
Age: Triassic
Locality: Madagascar
Size: 2 - 3 cm
Colors on product photos may differ from those of the original specimen due to technical reasons.
Our photos serve as a reference, you will receive a piece of comparable quality with your purchase.
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