Rampone et al recognized both types of

The mineral analyses of norite veins and veinlets in composite xenoliths are reported in Table 1. The PF-04217903  mineral phases are plagioclase and orthopyroxene; plagioclase varies in composition from oligoclase to labradorite in centimetric veins, whereas it generally shows higher calcium content (labradorite to bytownite) in millimetric veinlets. Orthopyroxene in centimetric veins shows En contents varying between 80 and 84, always lower than that recorded in orthopyroxene of the associated peridotite country rock (En 82–88). In centimetric norite veins the parageneses include sporadic pargasite amphibole, whereas in millimetric norite veinlets a large variety of accessory minerals are recorded; they consist of amphibole, phlogopite, apatite, zircon, rutile and peculiar mineral phases pertaining to the huttonite–monazite series.
The mineral analyses of amphibole (± phlogopite) clinopyroxenites and composite xenoliths characterized by centimetric clinopyroxenite veins crosscutting peridotite matrix are reported in Table 2. Clinopyroxene generally shows an intermediate composition between salite and augite, becoming endiopside in the associated peridotite matrix of composite xenoliths. Amphibole in clinopyroxenites generally displays kaersutite composition rich in potassium and titanium (K2O up 1.3 wt.%; TiO2 up to 5.8 wt.%), whereas it is characterized by less titaniferous pargasite composition in the associated peridotite matrix of composite xenoliths. Olivine in clinopyroxenites varies between Fo 75 and 83, whereas it is characterized by higher Fo content (87–88) in the associated peridotite matrix of composite xenoliths. Titaniferous phlogopite (TiO2 up to 3.8 wt.%) and silica-undersaturated (TiO2-rich) glass are also recorded.