Skarn Mineralogy

    
	
  • Group	End members		Abr.	Composition	Series
    

	
  • Garnet	

      
			
    • grossularite 		Gr	Ca3Al2(SiO4)3	grandite
			
    • andradite 		Ad	Ca3Fe2(SiO4)3		
			
    • spessartine 		Sp	Mn3Al2(SiO4)3
			
    • almandine 		Al	Fe3Al2(SiO4)3	sub-calcic garnet
			
    • pyrope 			Py	Mg3Al2(SiO4)3

  • Pyroxene	

      
			
    • diopside		Di	CaMgSi2O6	salite
			
    • hedenbergite		Hd	CaFeSi2O6    			
			
    • johannsenite		Jo	CaMnSi2O6
			
    • fassaite		Fas	Ca(Mg,Fe,Al)(Si,Al)2O6

  • Olivine		

      
			
    • larnite			Ln		Ca2SiO4	monticellite
			
    • forsterite		Fo		Mg2SiO4				
			
    • fayalite		Fa		Fe2SiO4	knebelite
			
    • tephroite		Tp		Mn2SiO4

  • Pyroxenoid	

      
			
    • ferrosilite		Fs		FeSiO3	pyroxmangite	
			
    • rhodonite		Rd		MnSiO3		
			
    • wollastonite		Wo		CaSiO3	bustamite								

  • Amphibole	

      
			
    • tremolite		Tr		Ca2Mg5Si8 O22(OH)2   actinolite
			
    • ferroactinolite		Ft		Ca2Fe5Si8 O22(OH)2		
			
    • manganese actinolite	Ma		Ca2Mn5Si8 O22(OH)2
			
    • hornblende		Hb		Ca2(Mg,Fe)4Al2Si7 O22(OH)2
			
    • pargasite		Pg		NaCa2(Mg,Fe)4Al3Si6 O22(OH)2	   
			
    • cummingtonite		Cm		Mg2(Mg,Fe)5Si8 O22(OH)2			
			
    • dannemorite		Dm		Mn2(Fe,Mg)5Si8 O22(OH)2      sub-calcic amphibole
			
    • grunerite		Gru		Fe2(Fe,Mg)5Si8 O22(OH)2

  • Epidote		

      
			
    • piemontite		Pm		Ca2(Mn,Fe,Al)3(SiO4)3 (OH)   		
			
    • allanite		All		(Ca,REE)2(Fe,Al)3(SiO4)3 (OH)
			
    • epidote			Ep		Ca2(Fe,Al)3(SiO4)3 (OH)	
			
    • clinozoisite		Cz		Ca2Al3(SiO4)3 (OH)  					

  • Plagioclase	

      
			
    • anorthite		An		CaAl2Si2O8
			
    • albite			Ab		NaAlSi3O8

  • Scapolite		

      
			
    • marialite		Ml		Na4Al3Si9O24 (Cl,CO3,OH,SO4)
			
    • meionite		Me		Ca4Al3Si6O24 (CO3,Cl,OH,SO4)

  • Other		

      
			
    • Axinite			Ax		(Ca,Mn,Fe, Mg)3Al2BSi4O15 (OH)
			
    • vesuvianite (idocrase)	Vs		Ca10(Mg,Fe,Mn)2Al4Si9O34 (OH, Cl, F)4  
			
    • prehnite		Pr		Ca2Al2Si3O10 (OH)2

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Last Updated: October 19, 2007

© 1995 (Larry Meinert)