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UV reactivity Near the geode entrance
apparently dissolved away
illuminating the interior scene
but later phases of growth (“second generation”) don’t contain hematite inclusions and are white
Approx dimensions: 5 x 4 x 2"
San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid gemmy color Quartz UV reactivity Near the geodeLocale: 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
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