List of minerals recognized by the International Mineralogical Association (R)

Ra – Re


Note: possibly a variety of variscite.
 * 1) Raadeite (allactite: IMA1996-034) 8.BE.30  [no] (IUPAC: heptamagnesium octahydro diphosphate)
 * 2) Rabbittite (Y: 1955) 5.ED.25   (IUPAC: tricalcium trimagnesium diuranyl tetrahydro hexacarbonate octadecahydrate)
 * 3) Rabejacite (zippeite: IMA1992-043) 7.EC.10   (IUPAC: dicalcium [tetrauranyl tetraoxo disulfate] octawater)
 * 4) Raberite (IMA2012-017) 2.0 [no] [no] (Tl5Ag4As6SbS15)
 * 5) Radekškodaite
 * 6) Radekškodaite-(Ce) (IMA2019-042) 9.B?. [no] [no]
 * 7) Radekškodaite-(La) (IMA2018-107) 9.B?. [no] [no]
 * 8) Radhakrishnaite (IMA1983-082) 3.AA.50   (IUPAC: lead tritelluride di(chloride,sulfide))
 * 9) Radovanite (IMA2000-001) 8.CB.40  [no] (IUPAC: dicopper iron(III) arsenate [arsenic(V) tetraoxy][arsenic(III) dioxyhydro] monohydrate)
 * 10) Radtkeite (IMA1989-030) 2.FC.15d   (IUPAC: trimercury disulfide chloride iodide)
 * 11) Radvaniceite (IMA2021-052) 2.EA. [no] [no] (IUPAC: germanium disulfide)
 * 12) Raguinite (IMA1968-022) 2.CB.60   (IUPAC: thallium iron disulfide)
 * 13) Raisaite (tellurium oxysalt: IMA2014-046) 4.0 [no] [no] (IUPAC: copper magnesium dihydrotetraoxotellurate(VI) hexahydrate)
 * 14) Raite (IMA1972-010) 9.EE.55
 * 15) Rajite (tellurite: IMA1978-039) 4.JK.20   (IUPAC: copper pentaoxoditellurate(IV))
 * 16) Rakovanite (decavanadate: IMA2010-052) 8.0 [no]  (IUPAC: trisodium {trihydrogen octaicosaoxodecavanadate} pentadecahydrate)
 * 17) Ralphcannonite (routhierite: IMA2014-077) 2.0 [no] [no] (IUPAC: silver dizinc thallium hexasulfide diarsenide)
 * 18) Ramaccioniite (IMA2018-082) 7.0 [no] [no] (IUPAC: tetracopper hexahydro selenate)
 * 19) Ramanite 6.EA.10
 * 20) Ramanite-(Cs) (IMA2007-007) 6.EA.10  [no]
 * 21) Ramanite-(Rb) (IMA2007-006) 6.EA.10  [no]
 * 22) Ramazzoite (IMA2017-090) 7.0 [no] [no]
 * 23) Rambergite (würzite: IMA1995-028) 2.CB.45   (IUPAC: manganese sulfide)
 * 24) Ramdohrite (lillianite: 1930) 2.JB.40a
 * 25) Rameauite (compreignacite: IMA1971-045) 4.GB.05   (IUPAC: dipotassium calcium hexauranyl tetrahydro hexaoxide hexahydrate)
 * 26) Ramikite-(Y) (IMA2009-021) 8.0 [no]
 * 27) Rammelsbergite (löllingite: 1845) 2.EB.15a   (IUPAC: nickel diarsenide)
 * 28) Ramosite (IMA2019-099) 2.0 [no] [no]
 * 29) Ramsbeckite (IMA1984-067) 7.DD.60   (IUPAC: pentadecacopper docosahydro tetrasulfate hexahydrate)
 * 30) Ramsdellite (ramsdellite: 1932) 4.DB.15a   (IUPAC: manganese(IV) dioxide)
 * 31) Ranciéite (Y: 1857) 4.FL.40
 * 32) Rankachite (IMA1983-044) 7.GB.25
 * 33) Rankamaite (IMA1968-002) 4.DM.05
 * 34) Rankinite (Y: 1942) 9.BC.15   (IUPAC: tricalcium heptaoxodisilicate)
 * 35) Ransomite (Y: 1928) 7.CB.80   (IUPAC: copper diiron(III) tetrasulfate hexahydrate)
 * 36) Ranunculite (IMA1978-067) 8.EB.40   (IUPAC: aluminium uranyl trihydro hydroxophosphate tetrahydrate)
 * 37) Rapidcreekite (IMA1984-035) 7.DG.20   (IUPAC: dicalcium sulfate carbonate tetrahydrate)
 * 38) Rappoldite (tsumcorite: IMA1998-015) 8.CG.20  [no] (IUPAC: lead dicobalt diarsenate dihydrate)
 * 39) Raslakite (eudialyte: IMA2002-067) 9.CO.10  [no]
 * 40) Raspite (Y: 1897) 4.DG.20   (IUPAC: lead tungsten tetraoxide)
 * 41) Rastsvetaevite (eudialyte: IMA2000-028) 9.CO.10  [no]
 * 42) Rasvumite (cubanite: IMA1970-028) 2.FB.20   (IUPAC: potassium diiron trisulfide)
 * 43) Rathite: sartorite group
 * 44) (Rathite-I) (sartorite: 1896) 2.HC.05d
 * 45) (Rathite-IV)Q (sartorite: 1964) 2.0 [no] [no]  Note: monoclinic phase with 140Å periodicity.
 * 46) Rauchite (autunite: IMA2010-037) 8.EB.05 [no]  (IUPAC: nickel diuranyl diarsenate decahydrate)
 * 47) Rauenthalite (IMA1964-007) 8.CJ.40   (IUPAC: tricalcium diarsenate decahydrate)
 * 48) RauviteQ (decavanadate: 1922) 4.HB.40   (IUPAC: calcium diuranyl decavanadate hexadecahydrate)
 * 49) Ravatite (IMA1992-019) 10.BA.40   (IUPAC: phenanthrene)
 * 50) Raygrantite (iranite: IMA2013-001) 7.0 [no] [no] (IUPAC: decalead zinc hexasulfate ditetraoxosilicate dihydroxyl)
 * 51) Rayite (IMA1982-029) 2.HC.10d   ((Ag,Tl)2Pb8Sb8S21)
 * 52) Realgar (Y: 1747) 2.FA.15a   (IUPAC: arsenic sulfide)
 * 53) Reaphookhillite (IMA2018-128) 8.0 [no] [no] (IUPAC: magnesio dizinc diphosphate tetrahydrate)
 * 54) Rebulite (IMA2008 s.p., 1982 Rd) 2.HD.25   (Tl5Sb5As8S22)
 * 55) Rectorite (corrensite: IMA1967 s.p., 1891) 9.EC.60
 * 56) Rectorite-K: a 1:1 regular interstratification of muscovite/illite (dioctahedral mica) and montmorillonite (dioctahedral smectite).
 * 57) Rectorite-Na: a 1:1 regular interstratification of paragonite and montmorillonite.
 * 58) Redcanyonite (zippeite: IMA2016-082) 7.0 [no] [no] (IUPAC: diammonium manganese [tetrauranyl tetraoxo disulfate] tetra(water))
 * 59) Reddingite (reddingite: IMA1980 s.p., 1878 Rd) 8.CC.05   (IUPAC: trimanganese(II) diphosphate trihydrate)
 * 60) Redgillite (IMA2004-016) 7.DD.70   (IUPAC: hexacopper decahydro sulfate monohydrate)
 * 61) RedingtoniteQ (halotrichite: 1888) 7.CB.85   (IUPAC: iron(II) dichromium tetrasulfate docosahydrate)
 * 62) Redledgeite (hollandite, coronadite: IMA1967 s.p., 1928) 4.DK.05b   (IUPAC: barium (hexatitanium dichromium(III)) hexadecaoxide)
 * 63) Redmondite (IMA2021-072) 7.JA. [no] [no]
 * 64) RedonditeQ (Y: 1869, 1967 s.p.) 8.CD.10 [no] [no]
 * 1) Reederite-(Y) (IMA1994-012) 5.BF.20   (IUPAC: pentadeca(sodium,manganese) diyttrium chloro nonacarbonate (fluorsulfate))
 * 2) Reedmergnerite (feldspar: IMA1962 s.p., 1955) 9.FA.35   (IUPAC: sodium boroctaoxotrisilicate)
 * 3) Reevesite (hydrotalcite: MA1966-025) 5.DA.50   (IUPAC: hexanickel diiron(III) hexadecahydro carbonate tetrahydrate)
 * 4) Refikite (Y: 1852) 10.CA.05
 * 5) Reichenbachite (IMA1985-044) 8.BD.05   (IUPAC: pentacopper tetrahydro diphosphate)
 * 6) Reidite (IMA2001-013) 9.AD.45  [no] (IUPAC: zirconium tetraoxosilicate)
 * 7) Reinerite (Y: 1958) 4.JA.10   (IUPAC: trizinc diarsenite)
 * 8) Reinhardbraunsite (humite: IMA1980-032) 9.AF.45   (IUPAC: pentacalcium ditetraoxosilicate dihydroxyl)
 * 9) Relianceite-(K) (IMA2020-102) 8.DG. [no] [no]
 * 10) Rémondite (burbankite) 5.AD.15
 * 11) Rémondite-(Ce) (IMA1987-035) 5.AD.15
 * 12) Rémondite-(La) (IMA1999-006) 5.AD.15
 * 13) RenarditeQ (Y: 1928) 8.0 [no] [no] (IUPAC: lead tetrauranyl tetrahydro diphosphate heptahydrate)
 * 14) Rengeite (chevkinite: IMA1998-055) 9.BE.70  [no] (IUPAC: tetrastrontium tetratitanium zirconium octaoxo diheptaoxodisilicate)
 * 15) Renierite (germanite: IMA2007 s.p., 1948) 2.CB.35a   ((Cu1+,Zn)11Fe4(Ge4+,As5+)2S16)
 * 16) Reppiaite (IMA1991-007) 8.BD.20   (IUPAC: pentamanganese(II) tetrahydro divanadate)
 * 17) Retgersite (Y: 1949) 7.CB.30   (IUPAC: nickel sulfate hexahydrate)
 * 18) Retzian 8.BM.05 (IUPAC: dimanganese(II) REE tetrahydro arsenate)
 * 19) Retzian-(Ce) (IMA1982 s.p., 1894 Rd) 8.BM.05
 * 20) Retzian-(La) (IMA1983-077) 8.BM.05
 * 21) Retzian-(Nd) (IMA1982 s.p.) 8.BM.05
 * 22) Revdite (IMA1979-082) 9.DM.30
 * 23) Reyerite (gyrolite: 1906) 9.EE.35
 * 24) Reynoldsite (IMA2011-051) 7.0 [no] [no] (IUPAC: dilead dimanganese(IV) pentaoxochromate)
 * 25) Reznitskyite (IMA2021-067) [no] [no]

Rh – Ry
Note: an amorphous hydrous phosphate of Al with Pb and Cu. (IUPAC: gold ditin alloy) (IUPAC: [dilead oxofluoride] chloride) (IUPAC: penta(iron,aluminium) nonahydro divanadate trihydrate) (IUPAC: decacalcium tri(heptaoxodisilicate) dichlorine) (IUPAC: dibismuth hexaoxotungstate) (IUPAC: diammonium dichlorine hexaoxotetraarsenate water) (Ir,Os,Ru) (IUPAC: copper magnesium hexaoxodisilicate)
 * 1) Rhabdoborite
 * 2) Rhabdoborite-(Mo) (IMA2019-114) 6.0 [no] [no]
 * 3) Rhabdoborite-(V) (IMA2017-108) 6.0 [no] [no]
 * 4) Rhabdoborite-(W) (IMA2017-109) 6.0 [no] [no]
 * 5) Rhabdophane 8.CJ.45 (IUPAC: REE phosphate monohydrate)
 * 6) Rhabdophane-(Ce) (IMA1987 s.p., 1885) 8.CJ.45
 * 7) Rhabdophane-(La) (IMA1987 s.p., 1883) 8.CJ.45
 * 8) Rhabdophane-(Nd) (IMA1966 s.p., 1951) 8.CJ.45
 * 9) Rhabdophane-(Y) (IMA2011-031) 8.CJ.45 [no]
 * 10) Rheniite (IMA1999-004a) 2.EB.35  [no] (IUPAC: rhenium disulfide)
 * 11) RheniumD (element: 1976) 1.AB.05 [no]
 * 12) Rhodarsenide (IMA1996-030) 2.AC.25b  [no] (IUPAC: dirhodium arsenide)
 * 13) Rhodesite (rhodesite: 1957) 9.EB.05
 * 14) Rhodium (element: IMA1974-012) 1.AF.10
 * 15) Rhodizite (Y: 1834) 6.GC.05   (IUPAC: potassium tetraberyllium tetralumino (beryllium undecaborate) octaicosaoxide)
 * 16) Rhodochrosite (calcite: IMA1962 s.p., 1813) 5.AB.05   (IUPAC: manganese carbonate)
 * 17) Rhodonite (rhodonite: IMA1980 s.p., 1819) 9.DK.05   (IUPAC: manganese(II) trioxosilicate)
 * 18) Rhodostannite (spinel, linnaeite: IMA1968-018) 2.DA.10   (IUPAC: di(copper,silver) iron octasulfide tristannide)
 * 19) Rhodplumsite (IMA1982-043) 2.BE.15   (IUPAC: trirhodium dilead disulfide)
 * 20) Rhomboclase (Y: 1891) 7.CB.55
 * 21) Rhönite (sapphirine: IMA2007 s.p., 1907) 9.DH.40
 * 22) Ribbeite (humite: IMA1985-045) 9.AF.65   (IUPAC: pentamanganese(II) di(tetraoxosilicate) dihydroxyl)
 * 23) Richardsite (stannite: IMA2019-136) 2.0 [no] [no]
 * 24) Richardsollyite (IMA2016-043) 2.0 [no] [no] (IUPAC: thallium lead sulfarsenite)
 * 25) RichelliteQ (Y: 1883) 8.BB.90   (IUPAC: calcium diron(III) diphosphate di(hydroxy,fluorine))
 * 26) Richelsdorfite (IMA1982-019) 8.DK.   (IUPAC: dicalcium pentacopper antimony(V) hexahydro chloro tetrarsenate hexahydrate)
 * 27) Richetite (Y: 1947) 4.GB.15
 * 28) Richterite [Na-Ca-amphibole: IMA2012 s.p., IMA1997 s.p., 1865] 9.DE.20
 * 29) Rickardite (Y: 1903) 2.BA.30
 * 30) Rickturnerite (IMA2010-034) 3.DB. [no]  (IUPAC: heptalead tetraoxo [tetrahydroxy magnesium] hydroxytrichloride)
 * 31) Riebeckite [Na-amphibole: IMA2012 s.p., IMA1997 s.p., 1888] 9.DE.25
 * 32) Riesite (IMA2015-110a) 4.0 [no] [no] (IUPAC: titanium dioxide)
 * 33) Rietveldite (IMA2016-081) 7.0 [no] [no] (IUPAC: iron uranyl disulfate pentawater)
 * 34) RilanditeQ (Y: 1933) 9.HB.10
 * 35) Rimkorolgite (IMA1990-032) 8.CH.45   (IUPAC: barium pentamagnesium tetraphosphate octahydrate)
 * 36) Ringwoodite (spinel, ringwoodite: IMA1968-036) 9.AC.15   (IUPAC: dimagnesium tetraoxosilicate)
 * 37) Rinkite (seidozerite, rinkite) 9.00.20
 * 38) Rinkite-(Ce) (IMA2016 s.p., IMA2009-C, 1884) 9.00.20
 * 39) Rinkite-(Y) (IMA2017-043) 9.00.20 [no] [no]
 * 40) Rinmanite (nolanite: IMA2000-036) 4.CB.40   (IUPAC: dimagnesium tetrairon dizinc diantimony dihydro tetradecaoxide)
 * 41) Rinneite (rinneite: 1909) 3.CJ.05   (IUPAC: tripotassium sodium iron(II) hexachloride)
 * 42) Riomarinaite (IMA2000-004) 7.DF.75   (IUPAC: bismuth hydro sulfate monohydrate)
 * 43) Ríosecoite (IMA2018-023) 8.0 [no] [no]
 * 44) Riotintoite (IMA2015-085) 7.0 [no] [no] (IUPAC: aluminium hydro sulfate trihydrate)
 * 45) Rippite (IMA2016-025) 9.0 [no] [no]
 * 46) Rittmannite (whiteite: IMA1987-048) 8.DH.15
 * 47) Rivadavite (IMA1966-010) 6.FA.20   (IUPAC: hexasodium magnesium tetra[hexahydro heptaoxohexaborate] decahydrate)
 * 48) RiversideiteQ (tobermorite: 1917) 9.DG.10   (IUPAC: pentacalcium hexadecaoxohexasilicate dihydroxyl dihydrate)
 * 49) Roaldite (nitride: IMA1980-079) 1.BC.05   (IUPAC: tetra(iron,nickel) nitride)
 * 50) Robertsite (arseniosiderite: IMA1973-024) 8.DH.30   (IUPAC: dicalcium trimanganese(III) dioxotriphosphate trihydrate)
 * 51) Robinsonite (Y: 1952) 2.HC.20   (Pb4Sb6S13)
 * 52) Rockbridgeite (rockbridgeite: 1949) 8.BC.10   (IUPAC: iron(II) tetrairon(III) pentahydro triphosphate)
 * 53) Rodalquilarite (tellurite: IMA1967-040) 4.JL.05   (IUPAC: trihydrogen diron(III) chloro tetratellurate(IV))
 * 54) Rodolicoite (quartz: IMA1995-038) 8.AA.05   (IUPAC: iron(III) phosphate)
 * 55) Roeblingite (Y: 1897) 9.CB.05
 * 56) Roedderite (milarite: IMA1965-023) 9.CM.05
 * 57) Rogermitchellite (IMA2003-019) 9.C [no]
 * 58) Roggianite (zeolitic tectosilicate: IMA1968-015) 9.GB.20
 * 59) Rohaite (IMA1973-043) 2.BD.35   ((Tl,Pb,K)2Cu8.7Sb2S4)
 * 60) Rokühnite (IMA1979-036) 3.BB.10   (IUPAC: iron dichloride dihydrate)
 * 61) Rollandite (IMA1998-001) 8.CD.30   (IUPAC: tricopper diarsenate tetrahydrate)
 * 62) Romanèchite (IMA1982 s.p., 1900) 4.DK.10
 * 63) Romanorlovite (IMA2014-011) 3.0 [no] [no] (IUPAC: undecapotassium nonacopper tetrahydro pentaicosachloride dihydrate)
 * 64) Romarchite (IMA1969-006) 4.AC.20   (IUPAC: tin oxide), anthropogenic
 * 65) ( Roméite group (A2Sb2O6Y), pyrochlore supergroup )
 * 66) Römerite (Y: 1858) 7.CB.75   (IUPAC: iron(II) diron(III) tetrasulfate tetradecahydrate)
 * 67) Rondorfite (IMA1997-013) 9.AB.20  [no] (IUPAC: octacalcium magnesium tetra(tetraoxosilicate) dichloride)
 * 68) Rongibbsite (zeolitic aluminosilicate: IMA2010-055) 9.G [no] [no] (IUPAC: dilead (aluminotetrasilicate) undecaoxyhydroxyl)
 * 69) Ronneburgite (IMA1998-069) 8.AC.75  [no] (IUPAC: dipotassium manganese dodecaoxotetravanadate)
 * 70) Röntgenite-(Ce) (IMA1987 s.p., 1953) 5.BD.20d   (IUPAC: dicalcium tricerium trifluoro pentacarbonate)
 * 71) Rooseveltite (monazite: 1947) 8.AD.50   (IUPAC: bismuth arsenate)
 * 72) Roquesite (chalcopyrite: IMA1962-001) 2.CB.10a   (IUPAC: copper indium disulfide)
 * 73) Rorisite (matlockite: IMA1989-015) 3.DC.25   (IUPAC: calcium chloride fluoride)
 * 74) Rosasite (malachite: 1908) 5.BA.10   (IUPAC: copper zinc dihydro carbonate)
 * 75) Roscherite (roscherite: 1914) 8.DA.10   (IUPAC: dicalcium pentamanganese(V) tetraberyllium tetrahydro pentaphosphate hexahydrate)
 * 76) Roscoelite (mica: IMA1998 s.p., 1876) 9.EC.15   (IUPAC: potassium divanadium(III) (aluminotrisilicate) decaoxydihydroxyl)
 * 77) Roselite (roselite: 1824) 8.CG.10   (IUPAC: dicalcium cobalt diarsenate dihydrate)
 * 78) Rosemaryite (alluaudite, wyllieite: IMA1979 s.p.) 8.AC.15   (IUPAC: vacancy sodium manganese(II) (iron(III) aluminium) triphosphate)
 * 79) Rosenbergite (IMA1992-046) 3.CD.05   (IUPAC: dialumino difluoride octa[fluoride water] dihydrate)
 * 80) Rosenbuschite (seidozerite, rinkite: 1887) 9.BE.22
 * 81) Rosenhahnite (IMA1965-030) 9.BJ.10   (IUPAC: tricalcium octaoxotrisilicate dihydroxyl)
 * 82) Roshchinite (lillianite: IMA1989-006) 2.JB.40a   ((Ag,Cu)19Pb10Sb51S96)
 * 83) Rosiaite (IMA1995-021) 4.DH.25   (IUPAC: lead ditin hexaoxide)
 * 84) Rosickýite (Y: 1931) 1.CC.05   (IUPAC: sulfur)
 * 85) RosièresiteQ,H (Y: 1841) 8.DF.10 [no]
 * 1) Rossiantonite (IMA2012-056) 7.0 [no] [no] (IUPAC: trialuminium dihydro phosphate disulfate decawater tetrahydrate)
 * 2) Rossite (Y: 1927) 4.HD.05   (IUPAC: calcium di(trixovanadate) tetrahydrate)
 * 3) Rösslerite (Y: 1861) 8.CE.20   (IUPAC: magnesium hydroxoarsenate heptahydrate)
 * 4) Rossmanite (tourmaline: IMA1996-018) 9.CK.05  [no]
 * 5) Rossovskyite (columbite: IMA2014-056) 4.0 [no] [no]
 * 6) Rostite (IMA1988 s.p., 1979 Rd) 7.DB.10   (IUPAC: aluminium hydro sulfate pentahydrate)
 * 7) Roterbärite (IMA2019-043) 2.0 [no] [no]
 * 8) Rouaite (nitrate: IMA1999-010) 5.NB.05   (IUPAC: dicopper trihydro nitrate)
 * 9) Roubaultite (IMA1970-030) 5.EA.25   (IUPAC: dicopper dioxo triuranyl dihydro dicarbonate tetrahydrate)
 * 10) Roumaite (mosandrite: IMA2008-024) 9.B [no]
 * 11) Rouseite (IMA1984-071) 4.JC.15   (IUPAC: dilead manganese(II) diarsenate dihydrate)
 * 12) Routhierite (routhierite: IMA1973-030) 2.GA.40   (IUPAC: copper thallium dimercury hexasulfide diarsenide)
 * 13) Rouvilleite (IMA1989-050) 5.BC.10   (IUPAC: trisodium calcium manganese(II) fluoro tricarbonate)
 * 14) Rouxelite (IMA2002-062) 2.JB.25j   (Cu2HgPb22Sb28S64(O,S)2)
 * 15) Roweite (Y: 1937) 6.DA.25   (IUPAC: dicalcium dimanganese(II) hexahydro heptaoxotetraborate)
 * 16) Rowlandite-(Y) (IMA1987 s.p., 1891) 9.HG.20   (IUPAC: iron(II) tetrayttrium di(heptaoxodisilicate) difluoride)
 * 17) Rowleyite (IMA2016-037) 4.0 [no] [no]
 * 18) Roxbyite (IMA1986-010) 2.BA.05   (IUPAC: nonacopper pentasulfide)
 * 19) Roymillerite (molybdophyllite: IMA2016-061) 09.H [no] [no]
 * 20) Rozenite (starkeyite: IMA1963 s.p., IMA1962-006 Rd) 7.CB.15   (IUPAC: iron(II) sulfate tetrahydrate)
 * 21) Rozhdestvenskayaite-(Zn) (tetrahedrite: IMA2018-K, IMA2016-094) 2.0 [no] [no] (Ag10Zn2Sb4S13)
 * 22) Rruffite (roselite: IMA2009-077) 8.CG.10 [no] [no] (IUPAC: dicalcium copper diarsenate dihydrate)
 * 23) Ruarsite (arsenopyrite: IMA1980 s.p., 1979) 2.EB.20   (IUPAC: ruthenium sulfarsenide)
 * 24) Rubicline (feldspar: IMA1996-058) 9.FA.30  [no] (IUPAC: rubidium (aluminoctaoxotrisilicate))
 * 25) Rubinite (garnet: IMA2016-110) 9.A [no] [no] (IUPAC: tricalcium dititanium(III) dodecaoxotrisilicate)
 * 26) Rucklidgeite (aleksite: IMA1975-029) 2.GC.40c   (IUPAC: lead dibismuth tetratelluride)
 * 27) Rudabányaite (IMA2016-088) 8.0 [no] [no] (IUPAC: (disilver dimercury) chloro arsenate)
 * 28) Rudashevskyite (sphalerite: IMA2005-017) 2.CB.05a  [no] (IUPAC: (iron,zinc) sulfide)
 * 29) Rudenkoite (IMA2003-060) 9.HA.50
 * 30) Rüdlingerite (IMA2016-054a) 4.0 [no] [no] (IUPAC: dimanganese(II) heptaoxovanadate(V)arsenate(V) dihydrate)
 * 31) Rudolfhermannite (zemannite: IMA2021-099) 4.JM. [no] [no]
 * 32) Ruifrancoite (roscherite: IMA2005-061a) 8.DA.10  [no]
 * 33) Ruitenbergite (IMA1992-011) 6.GD.05
 * 34) Ruizite (ruizite: IMA1977-007) 9.BJ.35
 * 35) Rumoiite (tin alloy: IMA2018-161) 1.0 [no] [no]
 * 1) Rumseyite (IMA2011-091) 3.0 [no] [no]
 * 1) Rusakovite (IMA1962 s.p., 1960) 8.DF.15
 * 1) Rusinovite (IMA2010-072) 9.B [no] [no]
 * 1) Russellite (Y: 1938) 4.DE.15
 * 1) Russoite (IMA2015-105) 4.0 [no] [no]
 * 1) Rustenburgite (auricupride: IMA1974-040) 1.AG.10   (IUPAC: triplatinum tin alloy)
 * 2) Rustumite (IMA1964-004) 9.BG.30   (IUPAC: decacalcium di(heptaoxodisilicate) tetrasilicate dihydroxyl dichlorine)
 * 3) Ruthenarsenite (modderite: IMA1973-020) 2.CC.15   (IUPAC: (ruthenium,nickel) arsenide)
 * 4) Rutheniridosmine (alloy: IMA1973 s.p., 1936 Rd) 1.AF.05
 * 1) Ruthenium (element: IMA1974-013) 1.AF.05
 * 2) Rutherfordine (IMA1962 s.p., 1906) 5.EB.05   (IUPAC: uranyl carbonate)
 * 3) Rutile (rutile: 1800) 4.DB.05   (IUPAC: titanium(IV) oxide)
 * 4) Ryabchikovite (pyroxene: IMA2021-011) [no] [no]
 * 1) Rynersonite (aeschynite: IMA1974-058) 4.DF.05   (IUPAC: calcium ditantalum hexaoxide)