"jan olieslagers" wrote in message
...
Stealth Pilot schreef:

Bob is that Tungsten?, or should it be Molybdenum Disulphide ??

Tungsten is tungsten (is wolfram); molybdenum is molybdenum.
But their sulfides are close kin, it seems.
See http://en.wikipedia.org/wiki/Tungsten(IV)_sulfide

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