9.GC.20 Mazzite-Na (IMA2003-058) 9.GC.20 [no] Mb – Me Mbobomkulite (chalcoalumite: IMA1979-078) 5.ND.10 Mcallisterite (IMA1963-012) 6.FA.10 Mcalpineite (tellurium oxysalt: IMA1992-025) 7.DE.55 (IUPAC: tricopper tellurium(VI) hexaoxide) Mcauslanite (IMA1986-051) 8.DB.60 (IUPAC: triiron(II) dialuminium fluoro triphosphate hydroxophosphate octadecahydrate) Mcbirneyite (howardevansite: IMA1985-007) 8.AB.35 (IUPAC: tricopper divanadate) Mcconnellite (IMA1967-037) 4.AB.15 (IUPAC: copper(I) chromium(III) dioxide) Mccrillisite (IMA1991-023) 8.CA.20 Mcgillite (pyrosmalite: IMA1979-024) 9.EE.10 Mcgovernite (hematolite: 1927) 8.BE.45 Mcguinnessite (malachite: IMA1977-027) 5.BA.10 (IUPAC: copper magnesium dihydro carbonate) Mckelveyite-(Y) (IMA1964-025 Rd) 5.CC.05 Mckinstryite (IMA1966-012) 2.BA.40 (IUPAC: pentasilver tricopper tetrasulfide) Mcnearite (IMA1980-017) 8.CJ.55 (IUPAC: sodium pentacalcium arsenate tetra(hydroxoarsenate) tetrahydrate) Medaite (medaite: IMA1979-062) 9.BJ.30 (IUPAC: hexamanganese(II) vanadatopentasilicate octadecaoxy hydroxyl) Medenbachite (IMA1993-048) 8.BK.10 (IUPAC: dibismuth iron(III) copper(II) trihydro oxo diarsenate) Medvedevite (IMA2021-082) Meerschautite (IMA2013-061) 2.0 [no] [no] Megacyclite (IMA1991-015) 9.CP.10 Megakalsilite (feldspathoid, nepheline: IMA2001-008) 9.FA.05 [no] (IUPAC: potassium aluminium tetraoxosilicate) Megawite (perovskite, perovskite: IMA2009-090) 4.CC.30 [no] (IUPAC: calcium tin trioxide) Meieranite (nordite: IMA2015-009) 9.0 [no] [no] Meierite (zeolitic tectosilicate: IMA2014-039) 9.G [no] [no] Meifuite (IMA2019-101) 9.E [no] [no] Meionite (scapolite: 1801) 9.FB.15 Meisserite (IMA2013-039) 7.0 [no] (IUPAC: pentasodium uranyl trisulfate hydrogen sulfate (H2O)) Meitnerite (johannite: IMA2017-065) 7.0 [no] [no] Meixnerite (hydrotalcite: IMA1974-003) 4.FL.05 (IUPAC: hexamagnesium dialuminium octadecahydroxide tetrahydrate) Mejillonesite (IMA2010-068) 8.D0. [no] [no] (IUPAC: sodium dimagnesium tetrahydro hydroxophosphate phosphate monohydrate) Melanarsite (IMA2014-048) 8.0 [no] [no] (IUPAC: tripotassium heptacopper iron(III) tetraoxo tetrarsenate) Melanocerite-(Ce)Q (apatite: 1887, 1890) 9.AJ.20 (Note: might be tritomite-(Ce)) Melanophlogite (IMA1962 s.p. Rd) 4.DA.25 Melanostibite (corundum: IMA1971 s.p., 1893) 4.CB.05 Melanotekite (Y: 1880) 9.BE.80 (IUPAC: dilead diiron(III) dioxo heptaoxodisilicate) Melanothallite (Y: 1870) 3.DA.05 (IUPAC: dicopper oxo dichloride) Melanovanadite (Y: 1921) 4.HE.05 (IUPAC: calcium divanadium(IV) divanadium(V) decaoxide pentahydrate) Melansonite (rhodesite: IMA2018-168) 9.E [no] [no] Melanterite (melanterite: 1557) 7.CB.35 (IUPAC: iron(II) sulfate heptahydrate) Melcherite (polyoxometalate: IMA2015-018) 4.0 [no] [no] (Melilite sorosilicate group (Y: 1796) 09.BB.10) (Definition: tetragonal crystal system sorosilicates, with (XSiO7)−6, where X is Si, Al or B) Meliphanite (Y: 1852) 9.DP.05 Melkovite (betpakdalite: IMA1968-033) 8.DM.15 Melliniite (phosphide: IMA2005-027) 1.BD.20 [no] (IUPAC: tetra(nickel,iron) phosphide) Mellite (Y: 1793) 10.AC.05 (IUPAC: aluminium benzene hexacarboxylate hexadecahydrate) Mellizinkalite (IMA2014-010) 3.0 [no] [no] (IUPAC: tripotassium dizinc heptachloride) Melonite (Y: 1868) 2.EA.20 (IUPAC: nickel ditelluride) Mélonjosephite (IMA1973-012) 8.BG.10 (IUPAC: calcium iron(II) iron(III) hydro diphosphate) Menchettiite (lillianite: IMA2011-009) 2.0 [no] (Pb5Mn3Ag2Sb6As4S24) Mendeleevite 9.??. Mendeleevite-(Ce) (IMA2009-092) 9. [no] Mendeleevite-(Nd) (IMA2015-031) 9. [no] Mendigite (wollastonite: IMA2014-007) 9. [no] [no] Mendipite (Y: 1824) 3.DC.70 (IUPAC: trilead dioxo dichloride) Mendozavilite (betpakdalite) 7.GB. Mendozavilite-KCa (IMA2011-088) 7.GB. [no] [no] Mendozavilite-NaCu (IMA2011-039) 7.GB. [no] [no] Mendozavilite-NaFe (IMA2010-E, IMA1982-009) 7.GB.45 Mendozite (Y: 1868) 7.CC.15 (IUPAC: sodium aluminium disulfate