Could this be gold?

[Hashish420]

found this in a rock quarry and there is tonnes more

 

[Gridwalker306]

I'm no expert on gold, but that looks like iron pyrite to me.

 

[Chizzy]

Try the "streak test".......slide one or two of the prominent grains over a piece of unfinished white porcelain. If they leave black streaks, it's iron pyrite............

 

[Zee]

Looks like pyrite. Just take a knife or something and see if you can flake some off.

Better yet crush it and pan it.