From their silicate ores, all the stable alkali metals may be obtained the same way: sulfuric acid is first used to dissolve the desired alkali metal ion and aluminium(III) ions from the ore (leaching), whereupon basic precipitation removes aluminium ions from the mixture by precipitating it as the hydroxide.
fɹʌm ðɛɹ sˈɪlᵻkˌeɪt ˈoːɹz, ˈɔːl ðə stˈeɪbəl ˈælkəlˌaɪ mˈɛɾəlz mˈeɪ biː əbtˈeɪnd ðə sˈeɪm wˈeɪ: sʌlfjˈʊɹɹɪk ˈæsɪd ɪz fˈɜːst jˈuːzd tə dɪsˈɑːlv ðə dɪzˈaɪɚd ˈælkəlˌaɪ mˈɛɾəl ˈaɪɑːn ænd ˌæljʊmˈɪniəm ɹˌoʊmən θɹˈiː ˈaɪɑːnz fɹʌmðɪ ˈoːɹ lˈiːtʃɪŋ, wˈɛɹəpˌɑːn bˈeɪsɪk pɹɪsˌɪpɪtˈeɪʃən ɹᵻmˈuːvz ˌæljʊmˈɪniəm ˈaɪɑːnz fɹʌmðə mˈɪkstʃɚ baɪ pɹɪsˈɪpᵻtˌeɪɾɪŋ ɪɾ æz ðə haɪdɹˈɑːksaɪd.