ElementBoron
SymbolB
Atomic Mass10.81
Atomic Number5
Name OriginsArabic, buraq
Year Discovered1808
Discovered CreditsL. J. Lissac and L. J. Thenard in Paris, France and Sir Humphrey Davy in London, UK.
RemarksNon-metal with several allotropes. Amorphous boron is a dark powder un-reactive to oxygen, water, acids, and alkalis. Forms metal borides with most metals. Used in borosilicate glass, detergents, and fire retardants. Strong neutron capture ability is put to best use as a moderator for nuclear reactions involving neutrons.
Diagnostic TestsMany compounds containing boron tinge the flame test an intense yellowish green. This effect is masked if the mineral contains sodium. The flame test color lasts only an instant and may be confused with the green flame color produced from barium minerals. In a small quantity of sulfuric acid solution, add 10 drops of methyl alcohol. Stir, and set fire to the mixture. The first flash of green flame confirms the presence of boron. If the green flame color occurs after the first flash of flame, barium or copper is present.
ReferencesEmsley, J., 1991; THE ELEMENTS : Sec. Ed., Clarendon Press, Oxford, 251 p.

Naturally Ocurring Isotopes :

Mass Nuclide Number Natural Abundance Half-life Half-life Unit Decay Mode Decay Mode MeV Decay Mode %
10.012937 10 19.9 % Stable
11.009305 11 80.1 % Stable

220 Minerals sorted by % of B (Boron) :

Diomignite25.57 %Li2B4O7
Metaborite24.67 %HBO2
Larderellite22.89 %(NH4)B5O6(OH)4
Ammonioborite22.05 %(NH4)2B10O16·5(H2O)
Strontioborite20.68 %SrB8O11(OH)4
Aristarainite20.65 %Na2MgB12O20·8(H2O)
Biringuccite20.55 %Na2B5O8(OH)·(H2O)
Ginorite20.35 %Ca2B14O23·8(H2O)
Preobrazhenskite20.33 %Mg3B11O15(OH)9
Boracite19.30 %Mg3B7O13Cl
Halurgite19.25 %Mg2[B4O5(OH)4]2·(H2O)
Nobleite19.25 %CaB6O9(OH)2·3(H2O)
Nasinite19.23 %Na2B5O8(OH)·2(H2O)
Fabianite19.13 %CaB3O5(OH)
Aksaite19.12 %MgB6O7(OH)6·2(H2O)
Ameghinite18.92 %NaB3O3(OH)4
Strontioginorite18.57 %(Sr,Ca)2B14O23·8(H2O)
Santite18.43 %KB5O6(OH)4·2(H2O)
Studenitsite18.41 %NaCa2[B9O14(OH)4]·2(H2O)
Sborgite18.32 %NaB5O6(OH)4·3(H2O)
Gowerite18.27 %CaB6O10·5(H2O)
Veatchite18.20 %Sr2B11O16(OH)5·(H2O)
Veatchite-p18.20 %Sr2B11O16(OH)5·(H2O)
Veatchite-A18.20 %Sr2B11O16(OH)5·(H2O)
Trembathite18.20 %(Mg,Fe++)3B7O13Cl
Kaliborite18.10 %KHMg2B12O16(OH)10·4(H2O)
Ezcurrite18.07 %Na4B10O17·7(H2O)
Rivadavite17.79 %Na6MgB24O40·22(H2O)
Iquiqueite17.70 %K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)
Sassolite17.48 %H3BO3
Admontite17.28 %MgB6O10·7(H2O)
Tyretskite17.26 %Ca2B5O9(OH)·(H2O)
Calciborite17.20 %CaB2O4
Mcallisterite16.88 %Mg2B12O14(OH)12·9(H2O)
Tunellite16.87 %SrB6O9(OH)2·3(H2O)
Congolite16.52 %(Fe++,Mg,Mn)3B7O13Cl
Ericaite16.52 %(Fe++,Mg,Mn)3B7O13Cl
Hilgardite16.30 %Ca2B5O9Cl·(H2O)
Tuzlaite16.22 %NaCaB508(0H)2·3(H2O)
Colemanite15.78 %Ca2B6O11·5(H2O)
Hydroboracite15.69 %CaMgB6O8(OH)6·3(H2O)
Chambersite15.64 %Mn3B7O13Cl
Priceite15.48 %Ca4B10O19·7(H2O)
Probertite15.39 %NaCaB5O7(OH)4·3(H2O)
Johachidolite15.33 %CaAlB3O7
Wardsmithite15.29 %Ca5MgB24O42·30(H2O)
Tincalconite15.16 %Na6[B4O5(OH)4]3·8(H2O)
Korzhinskite15.04 %CaB2O4·(H2O)
Penobsquisite14.95 %Ca2Fe++[B9O13(OH)6]Cl·4(H2O)
Kernite14.90 %Na2B4O6(OH)2·3(H2O)
Londonite14.67 %CsAl4Be4(B,Be)12O28
Braitschite-(Ce)14.65 %(Ca,Na2)7(Ce,La)2B22O43·7(H2O)
IMA2001-05114.54 %Ca16(Mg,Li, )2[B13O17(OH)12]4Cl6·28(H2O)
Meyerhofferite14.51 %Ca2B6O6(OH)10·2(H2O)
Suanite14.39 %Mg2B2O5
Ruitenbergite14.27 %Ca9B26O34(OH)24Cl4·13(H2O)
Pringleite14.27 %Ca9B26O34(OH)24Cl4·13(H2O)
Howlite13.81 %Ca2B5SiO9(OH)5
IMA2001-05713.51 %Ca6B14O19(SO4)(OH)14·5(H2O)
Vimsite13.37 %CaB2O2(OH)4
Uralborite13.37 %CaB2O2(OH)4
Ulexite13.34 %NaCaB5O6(OH)6·5(H2O)
Balavinskite13.29 %Sr2B6O11·4(H2O)
Pinnoite13.19 %MgB2O4·3(H2O)
Ekaterinite12.98 %Ca2B4O7(Cl,OH)2·2(H2O)
Inderborite12.88 %CaMg[B3O3(OH)5]2·6(H2O)
Szaibelyite12.85 %MgBO2(OH)
Hungchaoite12.66 %MgB4O5(OH)4·7(H2O)
Rhodizite12.49 %(K,Cs)Al4Be4(B,Be)12O28
Nifontovite12.44 %Ca3B6O6(OH)12·2(H2O)
IMA1995-02012.23 %CaB3O4(OH)3
Kurchatovite12.12 %Ca(Mg,Mn,Fe++)B2O5
Clinokurchatovite12.11 %Ca(Mg,Fe++,Mn)B2O5
Inyoite11.68 %Ca2B6O6(OH)10·8(H2O)
Inderite11.59 %MgB3O3(OH)5·5(H2O)
Kurnakovite11.59 %MgB3O3(OH)5·5(H2O)
Tertschite11.59 %Ca4B10O19·20(H2O)
Solongoite11.58 %Ca2B3O4(OH)4Cl
Hambergite11.52 %Be2BO3(OH)
Kotoite11.35 %Mg3B2O6
Borax11.34 %Na2B4O5(OH)4·8(H2O)
Frolovite10.93 %CaB2(OH)8
Parasibirskite10.82 %Ca2B2O5·(H2O)
Sibirskite10.82 %CaHBO3
Fedorovskite10.77 %Ca2(Mg,Mn)2B4O7(OH)6
Jeremejevite10.56 %Al6B5O15(F,OH)3
Teruggite10.49 %Ca4MgAs2B12O22(OH)12·12(H2O)
Volkovskite10.48 %KCa4[B5O8(OH)4][B(OH)3]Cl·4(H2O)
Barberiite10.31 %(NH4)BF4
Pentahydroborite10.02 %CaB2O(OH)6·2(H2O)
Ferruccite9.85 %NaBF4
Olshanskyite9.72 %Ca2[B3O3(OH)6]OH·3(H2O)
Roweite9.67 %Ca2Mn++2B4O7(OH)6
Berborite9.62 %Be2(BO3)(OH,F)·(H2O)
Sussexite9.42 %MnBO2(OH)
Hexahydroborite9.25 %Ca[B(OH)4]2·2(H2O)
Hydrochlorborite9.24 %Ca2B4O4(OH)7Cl·7(H2O)
Takedaite9.09 %Ca3(BO3)2
Okayamalite8.94 %Ca2B2SiO7
Brianroulstonite8.94 %Ca3[B5O6(OH)6](OH)Cl2·8(H2O)
Heidornite8.86 %Na2Ca3B5O8(SO4)2Cl(OH)2
Danburite8.79 %CaB2(SiO4)2
Peprossiite-(Ce)8.76 %(Ce,La)Al2(BO3)3
Bakerite8.67 %Ca4B4(BO4)(SiO4)3(OH)3·(H2O)
Malinkoite8.59 %NaBSiO4
Sinhalite8.57 %MgAlBO4
Garrelsite-VIII8.49 %Ba3NaSi2B7O16(OH)4
Garrelsite-V8.49 %Ba3NaSi2B7O16(OH)4
Borcarite7.92 %Ca4MgB4O6(OH)6(CO3)2
Karlite7.86 %(Mg,Al)6(BO3)3(OH,Cl)4
Aldzhanite7.83 %CaMgB2O4Cl·7(H2O) (?)
Nordenskioldine7.82 %CaSnB2O6
Satimolite7.74 %KNa2Al4(B2O5)3Cl3·13(H2O)
Jimboite7.65 %Mn3B2O6
Tusionite7.42 %MnSn++++(BO3)2
Warwickite7.34 %Mg(Ti,Fe+++,Al)(BO3)O
Avogadrite7.24 %(K,Cs)BF4
Yuanfuliite7.19 %(Mg,Fe++)(Fe+++,Al,Mg,Ti,Fe++)(BO3)O
Pseudosinhalite6.93 %Mg2Al3B2O9(OH)
Datolite6.76 %CaBSiO4(OH)
Teepleite6.74 %Na2B(OH)4Cl
Sakhaite6.58 %Ca3Mg(BO3)2(CO3)·0.36(H2O)
Fluoborite6.41 %Mg3(BO3)(F,OH)3
Chelkarite6.23 %CaMgB2O4Cl2·7(H2O) (?)
Bandylite6.08 %CuB(OH)4Cl
Sulfoborite5.98 %Mg3B2(SO4)(OH)8(OH,F)2
Qilianshanite5.94 %NaH4(CO3)(BO3)·2(H2O)
Homilite5.91 %Ca2(Fe++,Mg)B2Si2O10
Henmilite5.85 %Ca2Cu[B(OH)4]2(OH)4
Magnesiohulsite5.72 %(Mg,Fe++)2(Mg,Fe+++,Sn++++)O2(BO3)
Boralsilite5.67 %Al16B6Si2O27
Chestermanite5.61 %Mg2(Fe+++,Mg,Al,Sb+++++)BO3O2
Pinakiolite5.56 %Mg2Mn+++O2(BO3)
Takeuchiite5.56 %Mg2Mn+++O2(BO3)
Gaudefroyite5.56 %Ca4Mn+++3-x(BO3)3(CO3)(O,OH)3
Fredrikssonite5.55 %Mg2(Mn+++,Fe+++)O2(BO3)
Ludwigite5.54 %Mg2Fe+++BO5
Wiserite5.42 %Mn4B2O5(OH,Cl)4
Lisitsynite5.35 %KBSi2O6
Searlesite5.30 %NaBSi2O5(OH)2
Azoproite5.26 %(Mg,Fe++)2(Fe+++,Ti,Mg)BO5
Orthopinakiolite5.16 %(Mg,Mn++)2Mn+++BO5
Schiavinatoite5.15 %(Nb,Ta)BO4
Tadzhikite-(Y)4.95 %Ca4(Y,Ce)2(Ti,Al,Fe+++,[ ])2[Si4B4O22](OH)2
Cappelenite-(Y)4.82 %Ba(Y,Ce)6Si3B6O24F2
Carboborite4.76 %Ca2Mg(CO3)2B2(OH)8·4(H2O)
Moydite-(Y)4.75 %YB(OH)4(CO3)
Hulsite4.64 %(Fe++,Mg)2(Fe+++,Sn)O2(BO3)
Behierite4.62 %(Ta,Nb)BO4
Blatterite4.54 %(Mn++,Mg)35Sb3(Mn+++,Fe+++)9(BO3)16O32
Luneburgite4.54 %Mg3B2(PO4)2(OH)6·5(H2O)
Reedmergnerite4.39 %NaBSi3O8
Tadzhikite-(Ce)4.33 %Ca4(Ce,Y)2(Ti,Al,Fe+++,[ ])2[Si4B4O22](OH)2
Mottanaite-(Ce)4.27 %Ca4(Ce,Ca)2AlBe2[Si4B4O22]O2
Rossmanite4.26 %[ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Hellandite-(Y)4.20 %(Ca,REE)4(Y,Ce)2(Al,[ ])2[Si4B4O22](OH)2
Vonsenite4.18 %Fe++2Fe+++BO5
Canavesite4.18 %Mg2(CO3)(HBO3)·5(H2O)
Bonaccordite4.09 %Ni2Fe+++BO5
Grandidierite3.65 %(Mg,Fe++)Al3(BO4)(SiO4)O
Cahnite3.63 %Ca2B(AsO4)(OH)4
Elbaite3.54 %Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
Liddicoatite3.46 %Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4
Magnesiofoitite3.46 %[ ](Mg2Al)Al6(Si6O18)(BO3)3(OH)4
Wightmanite3.41 %Mg5(BO3)O(OH)5·2(H2O)
Dravite3.38 %NaMg3Al6(BO3)3Si6O18(OH)4
Ominelite3.37 %(Fe++,Mg)Al3BSiO9
Olenite3.36 %NaAl3Al6(BO3)3(Si6O18)(O,OH)4
Uvite3.34 %(Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4
IMA2000-0303.33 %CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Ciprianiite3.32 %Ca4[(Th,U)(REE)]2(Al,[ ])2[Si4B4O22](OH,F)2
Werdingite3.22 %(Mg,Fe)2Al14B4Si4O37
Foitite3.14 %[ ]Na<0.5(Fe++,Al)3Al6Si6O18(BO3)3(OH)4
Schorl3.11 %NaFe++3Al6(BO3)3Si6O18(OH)4
Feruvite3.09 %(Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4
Buergerite3.08 %NaFe+++3Al6(BO3)3Si6O21F
Calcybeborosilite-(Y)2.97 %(REE,Ca)2[ ](B,Be)2(SiO4)2(OH,O)2
IMA1999-0502.94 %NaMg3V6(Si6O18)(BO3)3(OH)4
Chromdravite2.91 %NaMg3(Cr,Fe+++)6(BO3)3Si6O18(OH)4
Seamanite2.90 %Mn3(PO4)B(OH)6
Vistepite2.84 %Mn++4Sn++++B2(SiO4)4(OH)2
Boromuscovite2.82 %KAl2(Si3B)O10(OH,F)2
Povondraite2.80 %(Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4
Tienshanite2.72 %BaNa2MnTiB2Si6O20
Kapitsaite-(Y)2.66 %(Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F]
Shabynite2.65 %Mg5(BO3)Cl2(OH)5·4(H2O)
Hellandite-(Ce)2.23 %[Ca3(REE)]4(REE)2Al2[Si4B4O22](OH,F)2
Harkerite2.21 %Ca24Mg8Al2(SiO4)8(BO3)6(CO3)10·2(H2O)
IMA2000-0132.17 %Li(1+3x)Al(4-x)(BSi3)O10(OH)8 [x = 0-0.33]
Manandonite2.11 %Li2Al4[(Si2AlB)O10](OH)8
Magnesio-axinite2.01 %Ca2MgAl2BO3Si4O12(OH)
Leucosphenite1.95 %Na4BaTi2O2[B2Si10O28]
Manganaxinite1.90 %Ca2Mn++Al2BO3Si4O12(OH)
Ferroaxinite1.90 %Ca2Fe++Al2BO3Si4O12(OH)
Dumortierite1.89 %Al6.5-7(BO3)(SiO4)3(O,OH)3
Tinzenite1.89 %(Ca,Mn,Fe)3Al2BO3Si4O12(OH)
Magnesiodumortierite1.89 %(Mg,Ti,[ ])<1(Al,Mg)2Al4Si3O18-y(OH)yB y=2-3
Vicanite-(Ce)1.69 %(Ca,Ce,La,Th)15As+++++(As+++0.5,Na0.5)Fe+++Si6B4O40F7
IMA2000-0211.67 %Ca3(Si,Fe+++,Al)[SO4][B(OH)4](OH,O)6·12H2O
Oyelite1.63 %Ca10B2Si8O29·12(H2O)
Painite1.61 %CaZrBAl9O18
Taramellite1.56 %Ba4(Fe+++,Ti,Fe++,Mg)4(B2Si8O27)O2Clx (x=0 to 1)
Kalborsite1.53 %K6Al4Si6BO20(OH)4Cl
Melanocerite-(Ce)1.20 %(Ce,Th,Ca)5(Si,B)3O12(OH,F)·n(H2O) (?)
Poudretteite1.18 %KNa2B3Si12O30
Titantaramellite1.12 %Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe
Tritomite-(Y)1.09 %(Y,Ca,La,Fe++)5(Si,B,Al)3(O,OH,F)13 (?)
IMA2001-0411.01 %Na15Sr12Zr14Si42B6O138(OH)6·12(H2O)
Okanoganite-(Y)0.99 %(Na,Ca)3(Y,Ce)12Si6B2O27F14
Wiluite0.96 %Ca19(Al,Mg,Fe,Ti)13(B,Al,[ ])5Si18O68(O,OH)10
Serendibite0.92 %Ca2(Mg,Al)6(Si,Al,B)6O20
Charlesite0.88 %Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12·26(H2O)
Wawayandaite0.86 %Ca12Mn4B2Be18Si12O46(OH,Cl)30 [Ortho·]
Prismatine0.86 %([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Sturmanite0.85 %Ca6(Fe+++,Al,Mn++)2(SO4)2[B(OH)4](OH)12·25(H2O)
Hyalotekite0.81 %(Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl)
Tritomite-(Ce)0.69 %(Ce,La,Ca,Y,Th)5(Si,B)3(O,OH,F)13
IMA2001-0590.68 %(Na,Ca)11Ca4(Si,S,B)14B2O40F2·4(H2O)
Holtite0.56 %Al6(Al,Ta)(BO3)[(SiO4,SbO4,AsO4)]3(O,OH)3
Kornerupine0.50 %(Mg,Fe++)4(Al,Fe+++)6(SiO4,BO4)5(O,OH)2