Side mission help.

Its called something like Big Jacks Jewls, the plot of the mission is you (Cal) are being blackmailed by big jack to get some uncut gemstones off of some miners, so i came out, went to the waypoint, scanned the ships, nada, nowt and zippo. so i dock at the station, still nothing, so i get the mining laser and start mining sum rocks, still a big zilch, ive tried everything i can think of, i cant find the miners, cant find the gemstones and cant seem to find a walk through that even acknowledges the quest/mission.

Any help would be appreciated.
Ragnek