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Senin, 16 November 2015

Mineral-Mineral Endapan Hidrotermal





Endapan Terkait-Intrusi
Endapan hipothermal ,mineral bijih adalah : emas (Au), magnetit (Fe3O4), hematit (Fe2O3), kalkopirit (CuFeS2), arsenopirit (FeAsS), pirrotit (FeS), galena (PbS), pentlandit (NiS), wolframit : Fe (Mn)WO4, Scheelit (CaWO4), kasiterit (SnO2), Mo-sulfida (MoS2), Ni-Co sulfida, nikkelit (NiAs), spalerit (ZnS),
dengan mineral-mineral gangue antara lain : topaz, feldspar, kuarsa, tourmalin, silikat, karbonat

Endapan Skarn
Endapan Skarn ,mineralnya adalah : andradite (Ca3Fe2Si3O12)-garnet, hedenbergite (CaFeSi2O6)-diopside (CaMgSi2O6), iron-rich hornblende, dan actionalite (Ca2(Mg,Fe)5Si8O22(OH)2)-tremolite (Ca2Mg5Si8O22(OH)2).

Endapan Porfiri
Porfiri tembaga
Chalcopyrite, Pyrite, Chalcocite, Bornite, Molybdenite, Galena, Magnetite, Gold, Copper

Porfiri timah
Arsenopyrite, Frankeite, Pyrrhotite, Sphalerite, Chalcopyrite, Galena, Stannite, Fluorite, Tetrahedrite-Tennantite, Sheelite


Endapan epithermal
Endapan ephitermal ,mineral bijih adalah : native cooper (Cu), argentit (AgS), golongan Ag-Pb kompleks sulfida, markasit (FeS2), pirit (FeS2), cinabar (HgS), realgar (AsS), antimonit (Sb2S3), stannit (CuFeSn),
dengan mineral-mineral ganguenya : kalsedon (SiO2), Mg karbonat, rhodokrosit (MnCO3), barit (BaSO4), zeolit (Al-silikat)

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