Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian


Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_1859

Peridotite is the most common type of ultrabasic rock and is composed of olivine and pyroxene. Olivine can make up 40–90% of the rock, followed by hornblende, biotite, plagioclase and chromite. Peridotite is usually found in ultrabasic rocks or in inclusions in alkaline basalt. Peridotites of various sizes are located in the Nanjing Liuhe National Geopark; the large ones are 2 m in diameter.

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