Short answer: Yes.
Long answer: Most handheld XRF units have 2 beam diameter options; Standard (8-9mm) and Small (3mm). I've heard of handheld units with Ø1mm options but never seen them in the wild...
However, even if the beam is too large to isolate a feature and adjacent metal contaminates the scan, you can still infer composition and proportions by comparing it to a clean scan of the adjacent metal. (Hope that makes sense.)
Side notes: Make sure the XRF is set to General Metals mode, not Precious Metals or something else. Scan times should be 10-20 seconds.
Cheers!
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