2.9" Polished Blue Lace Agate Sphere - Ysterputs Mine, Namibia

Polished Blue Lace Agate Sphere - Ysterputs Mine, Namibia #188872

This is a polished sphere that was shaped from blue lace agate collected from the Ysterputs Mine in Namibia, Africa. The blue coloration of this specimen is truly wonderful and vibrant. This material comes from chalcedony veins formed by hydrothermal deposition within large cracks in the Karoo Whitehill Formation and surrounding metamorphic, sedimentary and igneous formations. Many of these cracks can be attributed to a fault that runs through the area.

Comes with the pictured display stand.

Agate is a variety of microcrystalline quartz (chalcedony) that displays translucence and, in some cases, banding. Agate primarily forms when silica-rich fluids fill pockets within rocks and/or fossils, depositing the silica along the walls of the rock. This process can result in banding patterns, as the compositions and impurities of these depositing fluids change over time. These banding patterns can either form as flat layers, creating linear patterns known as waterline agate, or as rounded layers, forming more common ring-like patterns. These patterns depend on the surfaces available for deposition.

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