tatanan
porphyry wis kawangun rong: magma cools alon jero ing lemah ndhuwur utawa magma punika ndingin kanthi cepet minangka erupts saka gunung mbledhos, nggawe butiran alit sing biasane bisa dideleng nganggo mripat wuda.
  
soapstone punika talc-Schist, kang jinis rock metamorphic lan iku umumé dumadi saka talc Mineral lan kanthi mangkono inmagnesium sugih.
  
komposisi
  
  
isi Mineral
biotite, chert, Feldspar, garnet, grafit, quartz, silika
  
albite, apatite, biotite, kalsit, karbonat, mineral lempung, hornblende, ilmenite, micas, plagioclase, pyroxene, quartz
  
senyawa isi
aluminium oxide, cao, wesi (iii) oxide, kalium oxide, MgO, sodium oxide, silikon dioksida, titanium dioxide
  
cao, mg, MgO
  
transformasi
  
  
metamorphism
Yes
  
Yes
  
jinis metamorphism
metamorphism kakubur, metamorphism cataclastic, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional
  
metamorphism kakubur, metamorphism cataclastic, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional
  
cuaca
Yes
  
No
  
jinis udan
udan biologi, udan kimia, ora kedhaftar
  
ora ditrapake
  
erosi
Yes
  
No
  
jinis erosi
erosi kimia, erosi gisik, erosi Glacier
  
ora ditrapake