pha lbang long bu
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ཕ་ལྦང་ལོང་བུ
[a cubic-shape stone] [RY]
cubic-shape dark gray metallic stone magnetite [IW]
(med) Galena, Lead sulfide, PbS (Drungtso 1999). See also zha nye for lead. The lead-grey Galena of cubic form is the primary ore mineral of lead. Worked for its lead content as early as 3000 BC, it is found in ore veins with sphalerite, pyrite, etc. Often contains silver and is a frequent ore of that metal as well (mindat.org).
(med) Pyrite, Iron sulphide FeS2 (Yeshi 2018). See also gser zil for Pyrite. Pyrite is a very common mineral (also one of the most common natural sulfides, and the most common disulfide), found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a constituent of metamorphic rocks. The brassy-yellow metallic colour of pyrite has in many cases lead to people mistaking it for Gold, hence the common nickname 'Fool's gold'. Pyrite is quite easy to distinguish from gold: pyrite is much lighter, but harder than gold and cannot be scratched with a fingernail or pocket knife (mindat.org).