Ironbark Zinc (ASX: IBG) exploration at the wholly owned Mestersvig project in Greenland is returning some very promising results, including visible base metal mineralisation over multiple metre true widths.
Highlighting the prospectivity at Mestersvig is historical mining and production, which included 544,600 tonnes at 9.9% zinc and 9.3% lead in the six years to 1962.
New drill samples from Mestersvig are being air-freighted from Greenland this week and will be shipped for assay by ALS Chemex in Europe.
Ironbark said drilling activity for 2011 has now mobilised from the Mestersvig site to the Citronen base metal project.
Exploration at Citronen is ongoing and primarily aimed at resource definition and infill drilling at the Esrum zone, in conjunction with extensional drilling around areas of higher-grade mineralisation at the Beach zone.
Citronen currently has a Inferred JORC Resource of 59.9 million tonnes at 5.9% zinc plus lead, with the latest exploration targeting the conversion to the higher confidence categories of Measured and Indicated.
At the Washington Land project, Ironbark will target follow-up exploration at the Cass prospect from work conducted by Rio Tinto (ASX: RIO) in the late 1990's, with the big miner withdrawing due to the low zinc and lead prices.
Mineralisation at Cass occurs over a four kilometre strike, where continuous rock chip composite samples returned; 25 metres at 8.9% zinc, 11.1% lead and 95g/t silver.
A second continuous rock chip composite sample taken 550 metres along strike to the east returned; 25 metres at 3.7% zinc, 7% lead and 40g/t silver.
A single diamond drill hole yielded 1.2 metres at 8.4% zinc, 0.04% lead and 94g/t silver.