rdo mkhris

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རྡོ་མཁྲིས
gallstone [JV]

rdo mkhris mineral med. [ro kha, zhu rjes bsil, nus pas rma 'brub, sh'u skye, chu ser 'dren par byed,.. [IW]

(med) Limonite (Yeshi 2018)

rdo mkhris rma yi rtsa kha sdom par byed / ces par / rang byung rdo rjes / rdo mkhris mkhris pa mig ser sel / gsungs pa 'di la rigs gnyis / rdo btsag ser po dang / de las cung mkhregs pa ljang ser mkhris pa 'dra ba ste / gang yang lce la reg na 'byar la ('di yang rta shod za ma ri las 'byung ste / ri de'i sgang brgyud du gling ge sar gyis dog a rdzog rin chen dpung ba btul nas gtor ba yin zer ba'i de'u mang du 'dug par rgyus de'u zer bar mthing rgyus dang rdo rgyus klad de'u la rdo klad mkhris de rva de'u la rva 'dra ba 'dug go) ro kha ba'i rnam pa can yod do //(Shel gong shel phreng, pdf p 128.3)

Illustrations : 'Phrin Las (25_107) rdo mkhris mchog mkhris mdog can (25_108) dman pa

Several names and notices in the Shel phreng deal with iron oxides, often identified with Limonite : lcags rdo in the meltable medicinal stone section, gru bzhi, btsag and rdo mkhris within the non-meltable medicinal stones, and sin dhu ra in the medicinal earth section. The important iron ore Hematite (smug po sbal rgyab) is found with the non-meltable medicinal stones.
Limonite is used as a field-term of unidentified massive hydroxides and oxides of iron, with no visible crystals, and a yellow-brown streak. Limonite is most commonly the mineral species Goethite, along with impurities of other minerals such as quartz and clays. A very common material in the oxidized zones of iron-bearing deposits (mindat.org)
If rdo mkhris were gallstones, one would expect them in the chapter of precious substances together with other calculi under dbang ril. But the notice is in the medicinal stone section.
Johannes Schmidt (talk) 17:07, 27 February 2024 (EST)