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Paragenetic Mode 8 : Mafic igneous rocks

Return to the list of paragentic modes

Description

Mafic igneous rocks, notably volcanic basalt and its intrusive equivalent gabbro, have been important crustal lithologies throughout Earth’s history.

Stage

Stage 3a: Earth’s earliest Hadean crust - Age: >4.50 Ga
7 : Ultramafic igneous rocks
8 : Mafic igneous rocks
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
10 : Basalt-hosted zeolite minerals
11 : Volcanic fumarole minerals; reduced phases (see also #45)

Minerals

Click on a button to filter by elements. Green = must include. Black = must exclude. Mineral names listed in bold are exclusively known from this paragenetic mode.

MineralFormulaCrystal System
Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2Monoclinic
Ă…kermaniteCa2Mg[Si2O7]Tetragonal
Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)Monoclinic
Allanite-(La)(CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH)Monoclinic
Allanite-(Nd)(CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH)Monoclinic
Allanite-(Y)(CaY)(AlAlFe2+)O[Si2O7][SiO4](OH)Monoclinic
AlmandineFe2+3Al2(SiO4)3Isometric
AluminiumAlIsometric
AlumoĂĄkermanite(CaNa)Al[Si2O7]Tetragonal
AnalcimeNa(AlSi2O6)·H2OTriclinic
AnniteKFe2+3(AlSi3O10)(OH)2Monoclinic
AnorthiteCa(Al2Si2O8)Triclinic
Augite(CaxMgyFez)(Mgy1Fez1)Si2O6Monoclinic
BorniteCu5FeS4Orthorhombic
Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2·2H2OHexagonal
CarmeltaziteZrAl2Ti4O11Orthorhombic
ChalcopyriteCuFeS2Tetragonal
ChlorapatiteCa5(PO4)3ClHexagonal
ChromiteFe2+Cr3+2O4Isometric
CochromiteCoCr2O4Isometric
CoheniteFe3COrthorhombic
CopperCuIsometric
Cordierite(Mg,Fe)2Al3(AlSi5O18)Orthorhombic
CristobaliteSiO2Tetragonal
Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2Monoclinic
DigeniteCu9S5Trigonal
Dissakisite-(Ce)(CaCe)(AlAlMg)O[Si2O7][SiO4](OH)Monoclinic
Dissakisite-(La)(CaLa)(AlAlMg)O[Si2O7][SiO4](OH)Monoclinic
EdeniteNaCa2Mg5(Si7Al)O22(OH)2Monoclinic
Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2Monoclinic
Ferriallanite-(Ce)(CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Monoclinic
Ferriallanite-(La)(CaLa)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Monoclinic
Ferro-edeniteNaCa2Fe2+5(Si7Al)O22(OH)2Monoclinic
Ferro-hornblende◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2Monoclinic
Ferro-pargasiteNaCa2(Fe2+4Al)(Si6Al2)O22(OH)2Monoclinic
Flörkeite(K3Ca2Na)[Al8Si8O32]·12H2OTriclinic
FluoranniteKFe2+3(Si3Al)O10F2Monoclinic
Fluoro-edeniteNaCa2Mg5(Si7Al)O22F2Monoclinic
ForsteriteMg2SiO4Orthorhombic
GehleniteCa2Al[AlSiO7]Tetragonal
GoldAuIsometric
HastingsiteNaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2Monoclinic
HercyniteFe2+Al2O4Isometric
IlmeniteFe2+TiO3Trigonal
IronFeIsometric
Julgoldite-(Fe2+)Ca2Fe2+Fe3+2[Si2O6OH][SiO4](OH)2(OH)Monoclinic
KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2Monoclinic
Khamrabaevite(Ti,V,Fe)CIsometric
KlöchiteK◻2(Fe2+Fe3+)Zn3[Si12O30]Hexagonal
Kozoite-(La)(La,Nd)(CO3)(OH)Orthorhombic
Kozoite-(Nd)(Nd,La,Sm,Pr)(CO3)(OH)Orthorhombic
LeuciteK(AlSi2O6)Tetragonal
Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38Trigonal
Magnesio-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Monoclinic
Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2Monoclinic
MagnesiochromiteMgCr2O4Isometric
MagnetiteFe2+Fe3+2O4Isometric
MeifuiteKFe6(Si7Al)O19(OH)4Cl2Triclinic
MelliteAl2[C6(COO)6]·16H2OTetragonal
Milanriederite(Ca18[REE])Fe3+Al4(Mg4Al4)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tetragonal
MotukoreaiteMg6Al3(OH)18[Na(H2O)6][SO4]2·6H2OTrigonal
PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2Monoclinic
Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6Monoclinic
Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Monoclinic
Potassic-magnesio-hastingsiteKCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Monoclinic
PowelliteCa(MoO4)Tetragonal
PrehniteCa2Al2Si3O10(OH)2Orthorhombic
ProtoenstatiteMg2Si2O6Orthorhombic
Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4Isometric
Rhabdophane-(Y)YPO4·H2OHexagonal
RhöniteCa4[Mg8Fe3+2Ti2]O4[Si6Al6O36]Triclinic
RutileTiO2Tetragonal
SanidineK(AlSi3O8)Monoclinic
SiderophylliteKFe2+2Al(Al2Si2O10)(OH)2Monoclinic
Stilbite-NaNa9(Si27Al9)O72·28H2OMonoclinic
StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2·H2OMonoclinic
TetraferrianniteKFe2+3(Si3Fe3+)O10(OH)2Monoclinic
TitaniteCaTi(SiO4)OMonoclinic
Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hexagonal
Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Monoclinic
Uedaite-(Ce)(Mn2+Ce)(AlAlFe2+)O[Si2O7][SiO4](OH)Monoclinic
UlvöspinelTiFe2+2O4Isometric
ValleyiteCa4Fe6O13Isometric
VertumniteCa4Al4Si4O6(OH)24·3H2OMonoclinic
VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tetragonal
VoggiteNa2Zr(PO4)(CO3)(OH)·2H2OMonoclinic
WĂĽstiteFeOIsometric
ZemkoriteNa2Ca(CO3)2Hexagonal
ZincZnHexagonal
ZincochromiteZnCr2O4Isometric
ZirconZr(SiO4)Tetragonal
ElementCountPercent
HHydrogen4246.15%
CCarbon88.79%
OOxygen8189.01%
FFluorine33.30%
NaSodium1819.78%
MgMagnesium2628.57%
AlAluminium5054.95%
SiSilicon5863.74%
PPhosphorus33.30%
SSulfur55.49%
ClChlorine22.20%
KPotassium1112.09%
CaCalcium4448.35%
TiTitanium1213.19%
VVanadium11.10%
CrChromium55.49%
MnManganese11.10%
FeIron4650.55%
CoCobalt11.10%
CuCopper44.40%
ZnZinc33.30%
SrStrontium11.10%
YYttrium33.30%
ZrZirconium55.49%
MoMolybdenum11.10%
BaBarium11.10%
LaLanthanum66.59%
CeCerium55.49%
PrPraseodymium11.10%
NdNeodymium33.30%
SmSamarium11.10%
AuGold11.10%

References

Hazen, Robert M., Morrison, Shaunna M. (2022) On the paragenetic modes of minerals: A mineral evolution perspective. American Mineralogist, 107 (7) 1262-1287 doi:10.2138/am-2022-8099
 
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