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In these petrified wood stem slices
A small patch of lower-quality chalcedony in one corner has a vivid geen reaction
it's believed this patterning may be mimicry of the European black widow spider
but is softer and more prone to scratches
Pseudo-stromatolites (medium) Magnetite In these petrified wood stemLocale: Morocco Approx dimensions: 2" avg diameter (1. 52. 5") Approx weight: 130g avg (90220g) A stromatolite is a sedimentary fossil structure made by prehistoric bacteria colonies, typically cyanobacteria. Stromatolites in fact are still living and forming in some parts of our world today, including Australia, and are among the earliest forms of lifeand fossilson our Earth. The fossils form in shallow water conditions of lakes or salt water shores.
