gser rdo
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གསེར་རྡོ
gser rdo med. mineral *, gold ore [IW]
med. mineral [astringent, cooling, cools fever, by its power cures broken bones, good for the eyes] [IW]
gold stone, gold ore, gold stone [JV]
(med) Chalcopyrite (Yeshi 2018) Marcasite (Drungtso 1999)
Synonyms : rta bya ste tsa (Shel gong)
gser rdo dngul rdos chu ser 'dren par byed / rtsa nad spyang la dug nad 'joms par byed / ces pa'i gser rdo ni / rta bya ste tsa yang zer ba 'u su dang skabs byed dgos / rdo phyi smug la nang gser ltar ser ba de yin / dbyibs shas che zlum po 'byung / 'ga' re rdo dkyus ma'i dbyibs kyang snang / gang ltar yang shin tu ser la 'od che ba g.ya' sngon po ra gan phyis pa'i g.ya' [115] 'dra ba yod pa 'byung / dngul rdo ni / rdo dbyibs 'dra min mang yang don la bzhus na dngul 'byung ba de'o // (Shel gong shel phreng, pdf p 114.5)
Illustrations : 'Phrin Las (25_091) gser rdo
Native gold (gser) has been digged for and collected on riverbeds since the antiquity in Western Tibet (Herodot's legend of the goldants), and in South India since the 1st c. as well, but the mined gold ores of today were certainly unknown. gser rdo designates gold-coloured minerals.
Chalcopyrite (Copper iron sulphide CuFeS2), the most abundant copper ore, has a brass yellow color ('catgold' in german, and 'fool's gold' for the similar Pyrite). Weathering may lead to the formation of malachite, azurite and numerous other secondary copper minerals (mindat.org).
Marcasite (FeS2), stone with golden specks (Drungtso 1999). Brass-yellow, metallic mineral ; tin-white on fresh exposures. The word is Arabic or Moorish and was applied to pyrite and similar metallic bronze colored minerals. Most frequently found in sedimentary rocks and coal beds, as a replacement mineral forming fossils, it is a mineral of low-temperature, near-surface, environments, forming from acid solutions. Pyrite (gser zil), the more stable form of FeS2, forms under conditions of higher temperatures and lower acidity or alkaline environments. Several mining sites in Tibet (mindat.org).
Johannes Schmidt (talk) 16:19, 26 February 2024 (EST)