San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid gemmy color Quartz When well-formed

When well-formed

Approx weight: 252g

but later phases of growth (“second generation”) don’t contain hematite inclusions and are white

152g  J 2

illuminating the interior scene

San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid gemmy color Quartz When well-formedLocale: San Carlos Apache Reservation, Arizona Approx dimensions: 3 x 2 x 1. 5" Approx weight: 220g 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 minerals