I would certainly try to look but I believe most of this area was ocean bottom not that long ago (in terms of earth's lifespan). I live on an area that is 200+/- feet above bedrock (I had a new well drilled a few years back, ... south/east NH). I know right here was compressed by glacers and underwater for many years after their retreat. Let us know what you find.
I live near Foxboro stadium and know that in 1890 there was a gold mine in Wrentham, I know the approximate location and have been meaning to contact the owners of the property. It ran for 10 years but the gold was hard to recover at that time and the farmer went lost his land due to unpaid taxes. So there is some here but...
I have heard tales of the Blue Hills having gold, I know they had large granite quarries there and the blue hills are basically bedrock. But the whole area is glacial drift.