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ཕ་ལྦང་ལོང་བུ
[a cubic-shape stone] [RY]
cubic-shape dark gray metallic stone magnetite [IW]
(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).