Perisphinctes Ammonite Fossil

Appears to be a Perisphinctes virguloides ammonite fossil found in Madagascar. Fossil is from the Jurassic Period (201-145 million years ago). Specimen was bought at the bookshop at Museo Civico di Storia Naturale in Milano, Italy.

Mercenaria Clam Fossil

This image is of a Mercenaria sp. clam fossil.  The fossil dates to the Jurassic Period (210-145 million years ago). The specimen was found in Mahajunga, Madagascar. It was on display at the Indiana University Southeast (IUS)
campus, first floor of Sciences Building as part of Glenn M. Mason collection. Image taken November 2018.

Polished Slabs at Carnegie Museum

To begin 2012, a tack away from fossils will be taken temporarily for some geological eye candy. The Hillman Hall of Minerals of Gems at the Carnegie Museum of Natural History has a beautiful display of illuminated mineral slices. This posting shows just a few so you will need to visit Pittsburgh, Pennsylvania in person to truly appreciate the beauty of these specimens. The first is an agate and amethyst piece from Brazil. Followed by another Brazilian piece of "bullseye" agate.

This next is is of a cross section of fire opal from Mexico.

This multi-shaded purple specimen is a piece of rhodochrosite from Argentina.

The following image is of an agate from Brazil.

This next picture is of a nephrite jade found in New Zealand.

The last image is of liddicoatite from Madagascar.