关键词: 意大利, 中国, 西秦岭, 超钾质岩石, 钾霞橄黄长岩, 碳酸岩

Abstract:

The kamafugite is a rare type of ultra-potassic rocks, and a rock series contained generally that rock types of alnoite, olvine-melilitite, mafurite, katungite andwugangite and so on. The kamafugite and associated carbonatite contained abundant deep information from the Earth interior and is a younger hot topic in the igneous rocks. This paper presents simply the definition and classification of the ultra-potassic rocks, and petrological and geochemical characteristics of the kamafugites and carbonatites, according to the observation in the field and studies on the kamafugites and carbonatites from Italy and West Qinling, China, and also gives a simple review for the genesis and tectonic settings formed the kamafugites and carbonatites.

Key words: Italy, West Qinling, China, ultra-potassic rock, kamafugite, carbonatite