tatanan
tephrite punika, hard rock nggoleki-grained kang jinis metasomatite, ateges ngrubah basalt. iku formulir karo utawa tanpa crystallization, salah siji ngisor permukaan minangka rocks intrusive utawa ing lumahing minangka rocks extrusive.
  
websterite bisa kawangun minangka cumulates ing intrusions ultramafic dening klempakan saka kristal pyroxene ing dasar ing kamar lahar.
  
komposisi
  
  
isi Mineral
Feldspar alkali, nepheline, plagioclase, pyroxene
  
amphibole, augite, bronzite, chromite, diopside, enstatite, garnet, hornblende, hypersthene, magnetite, pyroxene
  
senyawa isi
cao, karbon dioksida, MgO, silikon dioksida
  
aluminium oxide, cao, krom (iii) oxide, wesi (iii) oxide, kalium oxide, MgO, sodium oxide, silikon dioksida, trioxide belerang
  
transformasi
  
  
metamorphism
Yes
  
Yes
  
jinis metamorphism
metamorphism cataclastic, kontak metamorphism, impact metamorphism, metamorphism regional
  
metamorphism kakubur, impact metamorphism
  
cuaca
Yes
  
Yes
  
jinis udan
udan biologi, udan kimia, udan mechanical
  
udan biologi, udan kimia, udan mechanical
  
erosi
Yes
  
Yes
  
jinis erosi
erosi kimia, erosi gisik, erosi Glacier, erosi segara, banyu erosi
  
erosi kimia, erosi gisik, erosi Glacier, banyu erosi, angin erosi