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This Specimen has been sold.
HERE ARE SOME OTHER SIMILAR FOSSILS FOR SALE
6.6" Polished, Black Rock Desert Thunderegg (Half) - Nevada
This is polished half of a large Black Rock Desert thunderegg. The interior is a colorful mixture of white, blue, and black agate bands. The interior is hollow and shows the botryoidal agate formation, with water-line agate filling in a portion of the cavity.
Comes with an acrylic display stand to assist with presentation.
Comes with an acrylic display stand to assist with presentation.
About Agate
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.
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.
SPECIES
Agate/Quartz
LOCATION
Black Rock Desert, Nevada
SIZE
6.6 x 5.4 x 3.9"
CATEGORY
ITEM
#229084
