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Properties of the Elements and Inorganic Compounds
Published in W. M. Haynes, David R. Lide, Thomas J. Bruno, CRC Handbook of Chemistry and Physics, 2016
W. M. Haynes, David R. Lide, Thomas J. Bruno
Name Oldhamite Oligoclase Olivenite Olivine Opal Orpiment Orthoclase Orthopyroxene Paragonite Parisite Pectolite Penfieldite Pentlandite Percylite Periclase Petalite Pharmacosiderite Phenakite Phillipsite Phlogopite Phosgenite Piemontite Pigeonite Pollucite Polybasite Powellite Prehnite Proustite Pseudobrookite Psilomelane Pumpellyite Pyrargyrite Pyrite Pyrochlore Pyrochroite Pyrolusite Pyromorphite Pyrope Pyrophyllite Pyrrhotite Quartz () Rammelsbergite Realgar Riebeckite Rutile Safflorite Samarskite Sapphirine Scapolite Scolecite Scorodite Sellaite Senarmontite Serpentine Siderite Sillimanite Co-Skutterudite Smithsonite Sodalite Formula CaS ([NaSi]0.9-0.7[CaAl]0.1-0.3)AlSi2O8 Cu2(AsO4)(OH) (Mg,Fe)SiO4 SiO2nH2O As2S3 KAlSi3O8 (Mg,Fe)SiO3 NaAl2AlSi3O10(OH)2 (Ce,La,Na)FCO3CaCO3 Ca2NaH(SiO3)3 Pb4Cl6(OH)2 Fe4.75Ni5.25S8 PbCuCl2(OH)2 MgO LiAlSi4O10 Fe3(AsO4)2(OH)35H2O Be2SiO4 K(Ca0.5,Na)2[Al3Si5O16]6H2O KMg3AlSi3O10(OH)2 Pb2(CO3)Cl2 Ca2Al1.5Mn1.5(SiO4)3OH (Mg,Fe,Ca)(Mg,Fe)Si2O6 CsAlSi2O6 (Ag,Cu)16Sb2S11 Ca(Mo,W)O4 Ca2Al2Si3O10(OH)2 Ag3AsS3 Fe2TiO5 BaMn9O16(OH)4 Ca2Al2(Al,Fe,Mg)[Si2(O,OH)7](SiO4) (OH,O)3 Ag3SbS3 FeS2 NaCaNb2O6F Mn(OH)2 MnO2 Pb5(PO4,AsO4)3Cl Mg3Al2Si3O12 Al2Si4O10(OH)2 Fe0.885S SiO2 NiAs2 As4S4 Na2Fe5FSi8O22(OH)2 TiO2 (Co,Fe)As2 (Y,Er,Ce,U,Ca,Fe,Pb,Th) (Nb,Ta,Ti,Sn)2O6 Mg2Al4O6SiO4 (Na,Ca)4Al3(Al,Si)3Si6O24(Cl,F,OH,CO3 ,SO4) CaAl2Si3O103H2O Fe(AsO4)2H2O MgF2 Sb2O3 Mg3Si2O5(OH)4 FeCO3 Al2OSiO4 (Co,Ni)As3 ZnCO3 Na8Al6Si6O24Cl2 Crystal system cubic triclinic rhombohedral rhombohedral amorp monoclinic monoclinic rhombohedral monoclinic hexagonal triclinic hexagonal cubic cubic cubic monoclinic cubic rhombohedral monoclinic monoclinic tetragonal monoclinic monoclinic tetragonal monoclinic tetragonal rhombohedral rhombohedral rhombohedral rhombohedral monoclinic rhombohedral cubic cubic hexagonal tetragonal hexagonal cubic monoclinic hexagonal hexagonal orthorhombic monoclinic monoclinic tetragonal rhombohedral rhombohedral monoclinic tetragonal monoclinic rhombohedral tetragonal cubic monoclinic hexagonal rhombohedral cubic rhombohedral cubic /g cm-3 2.59 2.64 4.2 3.81 1.9 3.46 2.56 3.6 2.85 4.42 2.88 6.6 4.8 3.6 2.42 2.80 2.98 2.2 2.83 6.13 3.49 3.38 2.9 6.1 4.35 2.93 5.57 4.36 4.71 3.21 5.85 5.02 5.3 3.26 5.08 7.04 3.58 2.78 4.62 2.65 7.1 3.5 3.3 4.23 7.3 5.69 3.49 2.64 2.27 3.28 3.15 5.58 2.55 3.9 3.25 6.8 4.4 2.30 Hardness 4 6.3 3 6.8 5 1.8 6 5.5 2.5 4.5 4.8 3.8 2.5 5.5 6.5 2.5 7.5 4.3 2.3 2.5 6 6 6.5 2.5 3.8 6.3 2.3 6 5.5 5.5 2.5 6.3 5.3 2.5 6.3 3.8 6.8 1.5 4 7 5.8 1.8 5 6.2 4.8 5.5 7.5 5.5 5 3.8 5 2.3 3 4.3 7 5.8 4.3 5.8 n 2.137 1.539 1.77 1.73 1.44 2.40 1.523 1.709 1.572 1.672 1.603 2.13 2.05 1.735 1.506 1.690 1.654 1.494 1.560 2.118 1.762 1.702 1.517 1.971 1.622 2.792 2.38 1.688 2.88 n 1.543 1.80 1.76 2.81 1.527 1.712 1.602 1.771 1.610 2.21
Formation of Cu–Au porphyry deposits: hydraulic quartz veins, magmatic processes and constraints from chlorine
Published in Australian Journal of Earth Sciences, 2023
G. N. Phillips, J. R. Vearncombe, J. D. Clemens, A. Day, A. F. M. Kisters, B. P. Von der Heyden
During metamorphism, evaporitic units are modified but can retain Cl-bearing minerals such as scapolite in medium-grade rocks (Almeida & Jenkins, 2017; De Jong et al., 1997; Oliver et al., 1992; Phillips et al., 1994; Yardley & Graham, 2002); and biotite and hornblende have been reported with 5 wt% Cl in meta-exhalites (Oen & Lustenhouwer, 1992). The composition of scapolite can be simplified to a calcic end-member meionite 3(CaAl2Si2O8).CaCO3 and a sodic end-member marialite 3(NaAlSi3O8).NaCl. Heating of evaporite-bearing sequences can yield metamorphic fluids of high salinity, and limited field evidence suggests that scapolite in these assemblages breaks down before the onset of partial melting. Links have been established between evaporitic rocks and some iron oxide–apatite deposits (e.g. Duan et al., 2021), so it would be surprising if such field relations involving scapolite had been missed by researchers working on Cu–Au porphyry deposits. In any case, despite being a major crustal reservoir of Cl (along with oceans and some diagenetic basins), at this stage we lack evidence to link evaporites to all or even most porphyry Cu–Au deposits.