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troctolite jinis rock intrusive mafic. iku kasusun ateges Jumlah utama nanging maneko rupo olivine lan calcic plagioclase bebarengan karo pyroxene suntingan. iku anorthosite-sugih olivine, utawa sing relatif pyroxene-kurang saka gabbro
christian Leopold von Buch
saka troklotit german, saka trōktēs greek, iwak segara (dijupuk dadi sejenis iwak)
rock grained coarse, rock opaque
rapakivi granit punika granit hornblende-biotite ngemot kristal dibunderaké akeh orthoclase kang mantled karo oligoclase
saka rapakivi finnish kang stands for rock crumbly
rock grained coarse, rock opaque