Mineral Species containing Iron (Fe)

Element Properties, Isotopic Compositions for Iron

**Iron (Fe) Element Properties**
Atomic Mass	55.847
Atomic Number	26
Name Origins	Anglo-Saxon, iron; Latin, ferrum.
Year Discovered	Prehistoric.
Discovery Credits	Known to ancient civilizations.
Remarks	When pure, iron is lustrous, and soft (workable). Most important of all metals, used principally as steel alloys. Rusts in damp air, dissolves in dilute acids. Diagnostic tests: The borax bead test in the oxidizing flame gives yellow to brownish red color while hot and is colorless to yellow when cold. Reducing flame gives a bottle green color. A magnetic mass is obtained if the mineral is powdered, mixed with soda (Na₂CO₃), and fused in a reducing flame (Note, cobalt and nickel also yield magnetic masses). In solution, iron will precipitate as Fe(OH)₃ when excess amounts of NH₄OH are added.
References	Emsley, J., 1991; THE ELEMENTS : Sec. Ed., Clarendon Press, Oxford, 251 p.
See Also	WebElements, ChemiCool

**Naturally Occurring Isotopes**
Symbol	Isotope Mass	Isotope Nuclide Number	Isotope Number	Natural Abundance	Half-life Units
Fe	53.939612	54	26	5.8200%	Stable
Fe	55.934939	56	26	91.1800%	Stable
Fe	56.935396	57	26	2.1200%	Stable
Fe	57.933277	58	26	0.8800%	Stable

Iron (Fe) Minerals sorted by Descending Weight Percent

Click here for List sorted by Mineral Name

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**1434 Minerals containing Iron (Fe) sorted by Descending Weight Percent**
% Fe	Mineral Name	Chemical Formula	MW
0.19 % Fe	Catamarcaite !	Cu6GeWS8	902.31
0.18 % Fe	Direnzoite !	NaK6MgCa2(Al13Si47O120)·36H2O	4,597.25
0.18 % Fe	Alsakharovite-Zn !	NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O)	1,240.78
0.18 % Fe	Lepkhenelmite-Zn !	Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O)	1,261.08
0.16 % Fe	Filatovite !	K[(Al,Zn)2(As,Si)2O8]	340.02
0.16 % Fe	Kudriavite !	(Cd,Pb)Bi2S4	690.39
0.15 % Fe	Niksergievite !	[Ba,Ca)2(Al,Si)7O10(CO3)(OH)6·nH2O	722.73
0.14 % Fe	Chivruaiite !	Ca4(Ti,Nb)5[(Si6O17)2[(OH,O)5]·13-14H2O	1,585.23
0.14 % Fe	Gjerdingenite-Ca !	K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O	1,216.40
0.13 % Fe	Ungavaite !	Pd4Sb3	790.08
0.12 % Fe	Attikaite !	Ca3Cu2Al2(AsO4)4(OH)4·2H2O	944.79
0.12 % Fe	Naldretteite !	Pd2Sb	333.37
0.12 % Fe	Minehillite	(K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16	4,786.44
0.11 % Fe	Zeravshanite !	Cs4Na2Zr3(Si18O45)(H2O)2	2,118.63
0.10 % Fe	Tsepinite-Sr !	(Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O)	572.95
0.09 % Fe	Ankinovichite !	(Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5	602.70
0.08 % Fe	Cattiite !	Mg3(PO4)2·22(H2O)	659.66
0.08 % Fe	Barahonaite-(Al) !	(Ca,Cu,Na,Fe+++,Al )12Al2(AsO4)8(OH,Cl)x·nH2O	2,052.55
0.08 % Fe	Salzburgite !	Cu1.6Pb1.6Bi6.4S12	2,162.05
0.08 % Fe	Lovdarite	K2Na6Be4Si14O36·9(H2O)	1,466.77
0.07 % Fe	Selenopolybasite !	[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]	2,378.81
0.07 % Fe	Londonite !	CsAl4Be4(B,Be)12O28	808.60
0.06 % Fe	Ingersonite	Ca3Mn++Sb+++++4O14	882.79
0.06 % Fe	Dachiardite-Ca #	(Ca,Na2,K2)5Al10Si38O96·25(H2O)	1,792.84
0.06 % Fe	Clinoptilolite-K #	(Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)	2,830.35
0.05 % Fe	Chabazite-Na !	(Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O)	1,046.27
0.05 % Fe	Gillardite !	Cu3NiCl2(OH)6	422.66
0.04 % Fe	Erionite-Na #	(Na2,K2,Ca)2[Al4Si14O36]·15(H2O)	2,809.97
0.04 % Fe	Hyalotekite #	(Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl)	1,747.32
0.03 % Fe	Petewilliamsite !	(Ni,Co,Cu)30(As2O7)15	5,730.36
0.03 % Fe	Paarite !	Cu1.7Pb1.7Bi6.3S12	2,166.36
0.02 % Fe	Barrerite	(Na,K,Ca)2Al2Si7O18·6(H2O)	2,680.57
0.02 % Fe	Fettelite !	[Ag6As2S7][Ag10HgAs2S8]	2,720.84

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( Bold - Valid Mineral Name)
(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name)
(# - Grandfathered as valid)