3.4" Polished Pilbara Agate Section - Oldest Known Agate

This is a piece of banded agate from a location near Nullagine in Western Australia. These agates are found in the Maddina Basalt and studies have shown that these are probably the oldest agates in the world, with an age in excess of 2 billion years. This colorful agate specimen has been cut flat and polished to a glossy finish on one side.

Comes with an acrylic 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 rock and/or fossils, resulting in deposition of the silica along the walls of the rock. This process can result in banding patterns as the composition and impurities of the fluids change over time. These banding patterns can either form as flat layers or rounded layers, depending on the surfaces available for deposition.
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DETAILS
SPECIES
Chalcedony var. Agate
LOCATION
Nullagine, Pilbara region, Western Australia
SIZE
3.4 x 3.1", up to 1.8" thick
CATEGORY
SUB CATEGORY
ITEM
#239865