San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid color

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Description

San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid colorLocale: 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

The whitish cluster of rice-like crystals are small quartz crystals

Locale: Morocco

to be polished into tumbles

This one lacks all of those lovely features so of course I was going to snatch it up

and swirling agate patterns

These slabs have been polished to reveal their pattern

Material: Dragon's blood jasper

True mookaite comes from Australia

When well-formed

Spheres of white quartz sprinkle the surface

In Atlas Mountain Jasper

Approx dimensions: 3 x 1