1 Definition
1.1 definisi
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
rapakivi granit punika granit hornblende-biotite ngemot kristal dibunderaké akeh orthoclase kang mantled karo oligoclase
1.2 Sajarah
1.2.1 asal
dingerteni
finland, europe
1.2.2 panemu
Alexandre brongniart Rene Hauy
Jakob sederholm
1.3 Etimologi
saka trakhus greek atos 'utawa roughness trakhutēs
saka rapakivi finnish kang stands for rock crumbly
1.4 kelas
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, hard rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock grained nggoleki, rock opaque
rock grained coarse, rock opaque