# List of minerals recognized by the International Mineralogical Association (I)

This list includes those recognised minerals beginning with the letter I. The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date. This list contains a mixture of mineral names that have been approved since 1959 and those mineral names believed to still refer to valid mineral species (these are called "grandfathered" species).
The list is divided into groups:
* Introduction • (Main synonyms)
* A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P–Q • R • S • T • U–V • W–X • Y–Z
The data was exported from mindat.org on 29 April 2005; updated up to 'IMA2021'.
The minerals are sorted by name, followed by the structural group (rruff.info/ima and ima-cnmnc by mineralienatlas.de, mainly) or chemical class (mindat.org and basics), the year of publication (if it's before of an IMA approval procedure), the IMA approval and the Strunz-mindat code. The first link is to mindat.org, the second link is to webmineral.com, and the third is to the Handbook of Mineralogy (Mineralogical Society of America).

## I

* Ianbruceite (IMA2011-049) 8.DA.50 [no] [no]
* Iangreyite (IMA2009-087) 8.DE.45 [no]
* Ianthinite (Y: 1926) 4.GA.10 (IUPAC: diuranium(IV) tetrauranyl tetrahydro hexaoxide nonahydrate)
* Ice (Ice I$_h$) (Y: old) 4.AA.05
** Ice-VII (IMA2017-029) 4.AA. [no] [no]
* Ichnusaite (IMA2013-087) 7.0 [no] [no] (IUPAC: thorium dimolybdate trihydrate)
* Icosahedrite (quasicrystal: IMA2010-042) 1.0 [no] [no] (Al $_{63}$Cu $_{24}$Fe $_{13}$)
* Idaite (stannnite: 1959) 2.CB.15a (IUPAC: tricopper iron tetrasulfide)
* Idrialite (Y: 1832) 10.BA.20
* Igelströmite (IMA2021-035) 4.BC. [no] [no]
* Iimoriite-(Y) (IMA1967-033) 9.AH.05 (IUPAC: diyttrium tetraoxosilicate carbonate)
* Ikaite (IMA1962-005) 5.CB.25 (IUPAC: calcium carbonate hexahydrate)
* Ikranite (eudialyte: IMA2000-010) 9.CO.10 [no]
* Ikunolite (tetradymite: IMA1962 s.p., 1959) 2.DC.05 (IUPAC: tetrabismuth trisulfide)
* Ilesite (starkeyite: 1881) 7.CB.15 (IUPAC: manganese(II) sulfate tetrahydrate)
* Ilímaussite-(Ce) (IMA1965-025) 9.CB.15
* Ilinskite (selenite: IMA1996-027) 4.JG.20 (IUPAC: sodium pentacopper trichloro dioxodiselenite)
* Ilirneyite (zemannite: IMA2015-046) 4.0 [no] [no]
* (Illite, mica series)
* Illoqite-(Ce) (nordite: IMA2021-021) 9.DO. [no] [no]
* Ilmajokite-(Ce) (IMA1971-027) 9.HB.05
* Ilmenite (corundum: 1827) 4.CB.05 (IUPAC: iron(II) titanium(IV) trioxide)
* Ilsemannite$^Q$ (Y: 1871) 4.FJ.15
* Iltisite (IMA1994-031) 2.FC.20b [no] (IUPAC: mercury silver chloro sulfide)
* Ilvaite (Y: 1811) 9.BE.07 (IUPAC: calcium iron(II) diron(III) oxoheptaoxodisilicate hydroxyl)
* Ilyukhinite (eudialyte: IMA2015-065) 9.C?. [no] [no]
* Imandrite (lovozerite: IMA1979-025) 9.CJ.15b
* Imayoshiite (ettringite: IMA2013-069) 6.0 [no] [no] (IUPAC: tricalcium aluminium carbonate hexahydro [tetrahydroborate] dodecahydrate)
* Imhofite (IMA1971 s.p., 1965) 2.HD.30 (Tl$_{5.8}$As1$_{5.4}$S$_{26}$)
* Imiterite (IMA1983-038) 2.BD.05 (IUPAC: disilver mercury disulfide)
* Imogolite (allophane: IMA1987 s.p., 1962 Rd) 9.ED.20 (IUPAC: dialuminium trioxosilicate tetrahydroxyl)
* Inaglyite (IMA1983-054) 2.DA.20 (IUPAC: lead tricopper octairidium hexadecasulfide)
* Incomsartorite (sartorite: IMA2016-035) 2.0 [no] [no]
* Inderborite (Y: 1941) 06.CA.25
* Inderite (IMA1962 s.p., 1937) 6.CA.15 (IUPAC: magnesium pentahydro trioxotriborate pentahydrate)
* Indialite (beryl: 1954) 9.CJ.05 (IUPAC: dimagnesium trialuminium (aluminopentasilicate) octadecaoxy)
* Indigirite (IMA1971-012) 5.DA.10 (IUPAC: dimagnesium dialuminium dihydro tetracarbonate pentadecahydrate)
* Indite (spinel, linnaeite: IMA1967 s.p., 1963) 2.DA.05 (IUPAC: iron diindium tetrasulfide)
* Indium (element: IMA1968 s.p., 1964) 1.AC.05
* Inesite (Y: 1887) 9.DL.05
* Ingersonite (IMA1986-021) 4.DH.40 (IUPAC: tricalcium manganese(II) tetraantimony(V) tetradecaoxide)
* Ingodite (tetradymite: IMA1980-045) 2.DC.05 (IUPAC: dibismuth telluride sulfide)
* Innelite (seidozerite, lamprophyllite: IMA1962 s.p.) 9.BE.40
* Innsbruckite (IMA2013-038) 9.0 [no] [no]
* Insizwaite (pyrite: IMA1971-031) 2.EB.05a (IUPAC: platinum dibismuthide)
* Intersilite (IMA1995-033) 9.EE.60 [no]
* Inyoite (Y: 1914) 6.CA.35 (IUPAC: calcium pentahydro trioxotriborate tetrahydrate)
* Iodargyrite (wurtzite: IMA1962 s.p., 1825) 3.AA.10 (IUPAC: silver iodide)
* Iowaite (hydrotalcite: IMA1967-002) 4.FL.05 (IUPAC: hexamagnesium diiron(III) dichloro hexadecahydroxide dihydrate)
* Iquiqueite (IMA1984-019) 6.H0.20
* Iranite (iranite: IMA1980 s.p., 1963) 7.FC.15
* Iraqite-(La) (steacyite: IMA1973-041) 9.CH.10
* Irarsite (pyrite: IMA1966-028) 2.EB.25 (IUPAC: iridium sulfarsenide)
* Irhtemite (IMA1971-034) 8.CB.55
* Iridarsenite (IMA1973-021) 2.AC.45b (IUPAC: iridium diarsenide)
* Iridium (element: IMA1991 s.p., 1804 Rd) 1.AF.10
* Iriginite (Y: 1957) 4.GB.60 (IUPAC: uranyl dimolybdenum(VI) heptaoxide trihydrate)
* Irinarassite (garnet: IMA2010-073) 9.A?. [no] [no]
* Iron (iron: old) 1.AE.05
* Irtyshite (IMA1984-025) 4.DJ.05 (IUPAC: disodium tetratantalum undecaoxide)
* Iseite (nolanite: IMA2012-020) 4.CB.40 [no] (IUPAC: dimanganese trimolybdenum octaoxide)
* Ishiharaite (sphalerite: IMA2013-119) 2.0 [no] [no] ((Cu,Ga,Fe,In,Zn)S)
* Ishikawaite (Y: 1922) 4.DB.25
* Isoclasite$^Q$ (Y: 1870) 8.DN.10 [no] [no] (IUPAC: dicalcium hydro phosphate dihydrate)
* Isocubanite (sphalerite: IMA1983-E) 2.CB.55b (IUPAC: copper diiron trisulfide)
* Isoferroplatinum (auricupride: IMA1974-012a) 1.AG.35 (IUPAC: triplatinum iron alloy)
* Isokite (titanite: 1955) 8.BH.10 (IUPAC: calcium magnesium fluoro phosphate)
* Isolueshite (oxide perovskite: IMA1995-024) 4.CC.35 (IUPAC: sodium niobium trioxide)
* Isomertieite (IMA1973-057) 2.AC.15a (IUPAC: undecapalladium diantimonide diarsenide)
* Isovite (carbide: IMA1996-039) 1.BA.10 [no] (IUPAC: tricosa(chromium,iron) hexacarbide)
* Isselite (IMA2018-139) 7.0 [no] [no]
* Itelmenite (IMA2015-047) 7.0 [no] [no] (IUPAC: tetrasodium trimagnesium tricopper octasulfate)
* Itoigawaite (lawsonite: IMA1998-034) 9.BE.05 [no]
* Itoite (IMA1962 s.p.) 7.BD.50 (IUPAC: trilead germanium dihydro dioxodisulfate)
* Itsiite (hyalotekite: IMA2013-085) 9.0 [no] (IUPAC: dibarium calcium di(boroheptaoxodisilicate))
* Ivanyukite series 9.0 [Ti$_4$O$_2$(OH)$_2$(SiO$_4$)$_3$], pharmacosiderite structural group
** Ivanyukite-Cu (IMA2007-043) 9.0 [no]
** Ivanyukite-K (IMA2007-042) 9.0 [no]
** Ivanyukite-Na (IMA2007-041) 9.0 [no]
* Ivsite (IMA2013-138) 7.0 [no] [no] (IUPAC: trisodium hydrogen disulfate)
* Iwakiite (IMA1974-049) 4.BB.10 (IUPAC: manganese(II) diiron(III) tetraoxide)
* Iwashiroite-(Y) (IMA2003-053) 7.GA.10 (IUPAC: yttrium tetraoxotantalate)
* Iwateite (aphthitalite: IMA2013-034) 8.0 [no] (IUPAC: disodium barium manganese diphosphate)
* Ixiolite (columbite: IMA1962 s.p., 1857 Rd) 4.DB.25
* Iyoite (atacamite: IMA2013-130) 3.0 [no] [no] (IUPAC: manganese copper trihydro chloride)
* Izoklakeite (kobellite: IMA1983-065) 2.HB.10b (Pb$_{26.4}$(Cu,Fe)$_2$(Sb,Bi)$_{19.6}$S$_{57}$)