Rocks ===== There are three major types of rocks: #. Igneous #. Sedimentary #. Metamorphic Igneous ------- #. basalt (玄武岩) #. mid-ocean ridge basalt (MORB) #. oceanic island basalt (OIB) #. peridotite (橄榄岩) #. harzburgite (斜方辉橄岩) #. gabbros (辉长岩) #. eclogite (榴辉岩) Sedimentary ----------- Metamorphic ----------- Pyrolite (地幔岩) ----------------- A theoretical rock considered to be the best approximation of the composition of Earth's upper mantle. It is constructed from basalts and peridotites. Others ------ #. meteorite: 陨石 #. chondrite: 球粒陨石 Referecens ---------- 1. https://en.wikipedia.org/wiki/List_of_rock_types