2.75" Polished Baker Ranch Thunderegg - New Mexico

This is a gorgeous "Baker Ranch Thunderegg" half that was collected from New Mexico. It features a mixture of red and purple coloration. It comes with an acrylic display stand.

Baker Ranch was the old name given to the general area that these thundereggs were collected, though there are several thunderegg collection sites within "Baker Ranch". One of the better known mines of this area is The Baker Egg Mine which produces a variety of colorful thundereggs. The site that this thunderegg was collected from is no longer accessible.

Baker Egg agate (also known as Baker Ranch agate) is a type of agate that formed as thundereggs (lithophysae) from a primarily rhyolite-perlite host rock. They are collected from an area southwest of Deming, New Mexico that was formerly known as Baker Ranch. These thundereggs are unique in that they exhibit vibrant coloration typically only found in agate nodules (amygdaloids).

Thundereggs are rarely found in any other color than white, blue or grey-blue, yet Baker Egg Mine produces mixtures of red, yellow, black, white and, in rare cases, green agate. This is due to the unique geologic history of the area, where rhyolitic lava deposits were disrupted by a mixture of geologic forces and the introduction of basaltic and andesitic lava flows over millions of years. These additional lava flows likely provided the minerals necessary for the variety of coloration found in Baker Egg agates (thundereggs).

Chalcedony var. Agate & Quartz
Southwest of Deming, New Mexico
2.75 x 2.4", up to 1.15" thick