tatanan
picrite punika nggoleki-grained, hard rock 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.
jasperoid jinis langka lan aneh saka rupane metasomatic saka rocks. iku kawangun dening rupane nemen saka rocks wall ing zona nyukur kang uga dumadi ing endapan, andesites, trachytes lan basalts.
komposisi
isi Mineral
biotite, olivine, plagioclase, pyrrhotite
mineral lempung, pyrite, quartz, sulfides
senyawa isi
al, cao, karbon dioksida, mg, MgO
NaCl, cao, karbon dioksida, Magnesium karbonat, MgO
transformasi
metamorphism
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✔
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jinis metamorphism
metamorphism kakubur, metamorphism cataclastic, impact metamorphism, metamorphism regional
metamorphism kakubur, metamorphism cataclastic, metamorphism regional
cuaca
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✘
✔
✘
jinis udan
udan biologi
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erosi
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✔
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jinis erosi
erosi kimia, erosi gisik, erosi Glacier, erosi segara, banyu erosi, angin erosi
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