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> exotic elements such as molybdenum. What? Molybdenum disulphide grease is available everywhere.
by kwhitefoot 4y ago
> exotic elements such as molybdenum.
What? Molybdenum disulphide grease is available everywhere.
- gene-h 4y agoOn asteroids it will be harder to obtain. It's been found to be present in iron meteorites at about 30 ppm[0]. [0]https://doi.org/10.1093/acrefore/9780190647926.013.206 https://doi.org/10.1093/acrefore/9780190647926.013.206
- shagie 4y agoIt's not "exotic" in that it isn't used (it has major industrial Uses) but rather that it is one of the less common materials in the crust. It's less common than many of the "rare earth" elements and less common than uranium (Uranium is the 49th most common element while Molybdenum is the 58th depending on source https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth... ).
- kwhitefoot 4y agoAccording to your source it is 20th in terms of annual production. Ahead of tungsten and vanadium and a lot of other often used elements like silver.