rdo thal
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རྡོ་ཐལ
lime stone, ashes, calcined stone, chalk [JV]
1) stone dust; 2) white earth for whitewash; 3) lime mineral medicine [IW]
1) stone dust; 2) white earth for whitewash; 3) rdo thal mineral medicine [ro tsa, zhu rjes drod, nus pas drod skyed, zas 'ju, skran bshig be snabs 'joms,...Syn: sa dkar, dkar rag rdo dkar dang, bya rdo, brag rdo, tsos rdo, zhun rdo [IW]
(med) Lime. Quicklime and slaked lime (Das 1902)
Synonyms : bya rdo, tshos rdo, zhun rdo, brag rdo, rdo dkar (Shel gong) rgya rdo (Yeshi 2018) rdo zho (Das 1902)
Sanskrit: sudhā (wisdomlib.org)
rdo thal pho ba'i bad kan 'dril ba gcod / zhes par / rang byung pas / rdo zhos snod kyi nad rnams sel / gsungs par sphyi ming / bya rdo / tshos rdo / zhun rdo / brag rdo / rdo dkar zer / rigs ni / rje zur mkhar pa'i rgya nag lugs kyi rdo zhun sbyor sde las / rdo rigs dkar po sngo skya dang / skya bo dmar skya sngo nag lnga / rim bzhin 'o ma phug ron ske / go bo'i rgyab dang rta glo dang / char [134] sprin 'dra ba gang rnyed btsal / brdungs tshe rwa gzhob dri ldan zhing/ sa yi 'og nas brkos pa gces / zhes pas / dkar po 'o ma kha dang / sngo skya phug ron ske dang / skya bo go bo'i rgyab 'dra dang / dmar skya rta glo kha dang / sngo nag char sprin mdog dang lngar phye bar mdzad la / rje rang byung rdo rjes / de steng ser po dang drug tu ngos 'dzin mdzad / gang yang sol mes tshos par bsregs la grang nas chu dron du bskyur nas khol zhing rdo zhor 'ju ba'o / rdo khus tshos kha 'gugs thub pa ste / btsod tshos la dmar smug dang / 'bri mog la mthing nag / yung ba dang lcum rtsa rnams la khrag mdog byed pa de yin / bsregs pa de yang phab pa'i bye brag las / gang nas chur bcug pa bsil / dro 'jam dus dar bar bcug pa snyoms / tshan mo chang du bcug pa drod ste / tshas gal che ba ni / bdud rtsi sgron chung las / rdo yi thal ba'i sman rnams ni / ma tshos sbyor ba dug sbyor yin / pho ba'i me gsod rtsa sbubs 'gag / lhan dang lcags dreg dmu skran skyed / ces dang / zhal gdams las / rdo thal gnyen po chur bzhus pa'i / khu ba dangs ma snyigs dang phral / gar sla zho phrug sla shos tsam / dar ram ras zhib tshags la btsags / ma tshos rdo phye til tsam yang / 'di la ma shor sa ma ya / zhes gsungs / so so'i yon tan yang / rje rang byung rdo rjes / dkar po lug gdong skran la phan / phug ron ske 'dras lcags dreg 'joms / go bo'i rgyab 'dras grang skran 'jig / rta glo kha 'dras 'dril rnams bshig / skyung ka'i rgyab 'dras glo skran phan / ser pos mchin mkhris 'gril rnams sel / zhes gsungs so // (Shel gong shel phreng, pdf p 133.5)
Illustrations : 'Phrin Las (25_129) rdo thal
Limestone, (Calcium-carbonate CaCO3), when burnt in a kiln (thab kha) it transforms into quicklime (Calcium-oxide CaO). With water, quicklime transforms in slaked lime (Calcium-hydroxide Ca(OH)2), a basis for plaster and cement. Exposed to Carbondioxide of the air, slaked lime hardens back into Calcium-carbonate or limestone. This process was perfectly known and mastered in ancient Rome as well as in ancient India. The indian name sudhā refers to lime, limepowder, limeplaster, but also nectar. See also cong zhi, limestone, according to Mahavyutpatti 'cong zhi chu', juice of the soma plant (wisdomlib.org)
Johannes Schmidt (talk) 14:03, 27 February 2024 (EST)