I have not been able to find this out of the way mine for a side quest. There is no indicator on the map and the guide does not have ANY reference to this place.
It is just to be cleared of spiders (supposedly) but the quest giver does not give any area directions either. can anyone help

Shor's Stone.
It's the mine located at Shor's Stone but does not have its own marker.

From the smithy, face West. Walk into the mine.

That is the quest in Shors stone right?

The mine is very nearby, if you follow the path/road between Slyggjas house and the blacksmiths you'll be there in about twenty steps. There should be a guard standing there too.

Redbelly mine the one with Frostbite Spiders?

They respawned after i cleared the mine. Miners took care of them themselves this time.