rdo rgyus

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རྡོ་རྒྱུས
rdo rgyus mineral med. [ro tsha la phan pa'i rdo zhig [IW]

rdo rgyus mineral med. [IW]

medicinal stone, friendship oath, gray antimony [JV]

(med) Asbestos rock, Chrysotile or White asbestos (Yeshi 2018)
Synonym : rdo rgyus bya bal ma (Yeshi 2018)

ba nu rdo rgyus mthing rgyus chu ba gso /... // rdo rgyus ni / rje rang byung pas / rdo rgyus rgyus pa'i nad la phan / gsungs pa 'di la bzang ngan gnyis te / gnyis ka'i nang nas byung / bzang ba sngo la dkar mdangs can rgyud pa skam po 'dra ba brdung zhing bsad na bya rgod kyi spu ltar 'byung ba / khar bldad na rgyus pa bsdad pa ltar dkar 'dam 'dam pa de ni bya bal ma ste / rgya gar sogs su bkal nas ras sogs gos 'chos par bshad pa'o / ngan pa shing ltar las / brdungs na zhig cing mi 'chag la dgye bkug btub tsam mo // mthing rgyus ni / ... (Shel gong shel phreng, pdf p 131.4)

Illustrations : 'Phrin Las (25_115) rdo rgyus

Mineralogically, asbestos (Hydrous magnesium silicate) includes certain silicate minerals that have a highly fibrous (asbestiform) structure, are heat resistant and chemically inert, possess high electrical insulating qualities, and are of sufficient flexibility to be woven. The 3 main minerals for commercial asbestos are Chrysotile (white asbestos), Amosite (brown asbetos) and Crocidolite (blue asbestos, see mthing rgyus). Chrysotile, or white asbestos, is worldwide the main asbestos mineral. Mining sites in Qinhai, Inner Mongolia (mindat.org).
The indian name Khaṭika is given as analogue for rdo rgyus, but refers also to a type of alum (lce myang, tshur dkar) as well as chalk and limestone (cong zhi) (wisdomlib.org).
Johannes Schmidt (talk) 13:38, 27 February 2024 (EST)