gru bzhi
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གྲུ་བཞི
square [RY]
khru bzhi - out cubit [RY]
1) ngos bzhi great and small snyom pa'i thing; 2) med. mineral (/ [astringent, heating, by its power klad skyon gso, chu ser skem] [IW]
square, earth, seat, a stone, 1 of dbyibs gzugs brgyad, square [JV]
(med) Limonite, Iron(III) oxide-hydroxide (Drungtso 1999). See also sin dhu ra. The term limonite is currently used for unidentified massive hydroxides and oxides of iron, with no visible crystals, and a yellow-brown streak. A very common material in the oxidized zones of iron-bearing deposits (mindat.org).
(med) Natural copper (Phrin Las 1987) gru bzhi ser po'am dkar po, Natural copper (yellow and white). nag po'i smug po, Natural copper (black and purple) (Phrin Las 1987) Johannes Schmidt (talk) 16:13, 26 November 2021 (UTC)