Stromatolite Cabochon Pebble Black Brown Natural Algae Fossil Polished Stone Cab Mineral Crystal Cab - 5PCS
- The banding that commonly appears in stromatolite is a record of the growth patterns of colonies of microorganisms. Stromatolites or stromatoliths ( from the Greek stroma, meaning bed, and lithos, rock) are layered accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains by biofilms of microorganisms, especially cyanobacteria..
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