31. Their essential minerals are pyroxene , plagioclase and garnet : chemically they resemble the gabbros. 32. With prograde metamorphism cummingtonite and grunerite morph to members of the olivine and pyroxene series. 33. There are no absorption bands related to Fe-bearing minerals, such as pyroxene . 34. Pyroxene is the usual ferromagnesian mineral, and resembles that of the tephrites and basanites.35. The Caolingshan Basalt consists of olivine and pyroxene , with crystals of biotite and plagioclase. 36. Other basalts contain olivine and pyroxene phenocrysts. 37. Their formation was influenced by pyroxene fractionation. 38. The groundmass contains plagioclase, pyroxene , silicon dioxide and oxides of iron and titanium. 39. Phenocrysts include olivine, plagioclase and pyroxene . 40. The researchers found concentrations of olivine and pyroxene in the " Hayabusa " samples.
