San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid color Barite This specimen has a cluster

This specimen has a cluster of intersecting hydroxyapophyllite crystals topped with a cluster of small scalenohedral calcite crystals

From the back

bolder color palette

This is displayed especially well on this point

'Agate' refers to chalcedony with banded color

San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid color Barite This specimen has a clusterLocale: San Carlos Apache Reservation, Arizona Approx dimensions: 2. 25 x 2. 25 x 2" Approx weight: 300g While this material is commonly called peridot in (or on) basalt, it is actually more complex. It would be more accurately called a peridotite xenolith in basalt. Peridot is the gem quality version of the mineral olivine, which is common in our Earths upper mantleand even in space. In comparison, peridotite is a combination of several types of