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These arches are originally created by drilling a hole through a chunk of sandstone and sandblasting the material into a smoothed arch
The piece is effectively three intergrown crystals in a stepped formation
There are several clusters of smoky quartz on the the specimen
It appears aragonite formed over calcite points which then partially dissipated
Pseudo-stromatolite, extra large "Badonkadonk" Stalactitic chalcedony These arches are originally createdLocale: Morocco Approx dimensions: 7 x 4. 75 x 4" Approx weight: 6 lbs 4 oz 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. First,
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