Which derailler hanger? Which derailler hanger should work on saracen raw 3 with sram sx4 rear derailer? The old derailler snapped off rhe frame
These claim to fit the Saracen Raw 2, which appears to be the same frame with slightly different components. It looks right based on what I can find on the internet. 

The compatibility of a hanger is between it and the frame, in general, standard rear derailleurs are compatible with all hangers.

https://www.ebay.co.uk/itm/SARACEN-Mantra-Raw-2-MONGOOSE-Tyax-Comp-Super-Rear-Gear-Mech-Hanger-CC003-/301758510575