btsag
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བཙག
born, red ocher, strain, SA 'tshag pa [JV]
1) red ocher; 2) [f 'tshag],, will [split, collect, gather, strain, press, infuse, be radiantly healthy, assemble] [IW]
red ochre [RY]
(med) Laterite, Limonite (Drungtso 1999, Yeshi 2018) Synonyms : gai ri ka, tum ya (Shel gong) le rgan me tog (Yeshi 2018). Skt.: gairika (Dash 1989)
lig bu mig dang de bzhin btsag yugs rnams / mig nad rus tshad sel zhing chu ser skem /... / btsag ni / rdo btsag dmar po ste / ming ni / gai ri ka dang / tum ya zer / 'dis 'og nas don pa'i rdo btsag dmar po shing tshon nyen pa de'o / yugs ni /... (Shel gong shel phreng, pdf p 132.1)
Illustrations : 'Phrin Las (25_122) btsag
Laterite (Iron oxide Fe2O3) is a highly weathered, red subsoil rich in hydrous iron oxides, developed in humid, tropical, and subtropical regions of good drainage. 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). The indian name gairika denotes red ochre (wisdomlib.org)
Johannes Schmidt (talk) 09:52, 27 February 2024 (EST)