Fossil - Pea Crab Pinnixa sp.

Fossil - Pea Crab Pinnixa sp.An abundant medium growing crab species found in the shallow seabed of the middle Miocene Monterey Formation, Pea Crabs of the genus Pinnixa lived in what is now modern day California approximately 12 16 million years ago. Beautifully preserved on slabs of flat shale, the crab fossil's color can vary from brown to gold depending on what minerals were present at time of fossilization. These unique fossil specimens show excellent articulation and detail

It is found in a vast array of forms

Also known as antimonite

Fluorite crystals are well shaped

which over the course of millions of years becomes solid while retaining the semitransparent yellowish hue of tree sap

Aquamarine is a form of Beryl crystal long sought after as a gem and precious stone due to its beautiful blue-green hue and clarity

The spectacular display of colors these specimens display can be formed by two different geological processes: the oxidation of pyrite causing ultra-thin layers of iron oxide to form on the surface

typically associated with granitic pegmatites

Stibnite may not qualify for free shipping or require additional shipping/packaging charges

It has a very dramatic "head shield" which is often interpreted as a mechanism to help it stay on top of a soft ocean floor

and under optimal conditions these insects will be clearly visible within the fossilized amber pieces

The unique combination of smoky

narrow shape resembling the interior and pitched roof of a cathedral