Ironbark (ASX: IBG) is focused on base metal exploration and development in Greenland and Australia. The company's project portfolio includes the Citronen Zinc Project, one of the world's largest undeveloped zinc resources, in Greenland and four base metal and gold exploration licences in New South Wales.
Ironbark Zinc significantly extends zinc lead mineralisation at Citronen
Ironbark Zinc (ASX: IBG) has reported that ongoing drilling at the 100% owned Citronen Base Metal Project in Greenland has extended the zinc-lead (Zn-Pb) mineralisation to the south east by a further 1.5km from the Discovery ore body.
Several drill holes were drilled targeting possible extensions of the mineralisation outside the previous resource areas. Three of these holes highlight the significant and world-class open ended nature of the defined mineralisation.
Results include:
- Hole CF10_277 with 16.0m @ 2.9%Zn (3.5%Zn+Pb) from 236.0 including 3m @ 6.0%Zn (6.7%Zn+Pb) and 1m @ 7.0%Zn (7.5%Zn+Pb); and
- Hole CF10_278 with 7.1m@ 2.0%Zn (2.5%Zn+Pb) from 217.0 including 1m@ 6.1%Zn (6.5%Zn+Pb).
The previous estimates of a target resource may be upgraded substantially with the final scale of the extent of the Citronen mineralisation unknown at this time.
Further drilling will be required to define any higher grade mineralisation that typically lies within the broader mineralised envelopes as identified within Citronen.
Additional drill results are currently being assayed and drilling will remain ongoing until the completion of the field season in September.
The feasibility study work is on schedule and budget with substantial ongoing engineering, design and development work. Mine planning has has yet to be conducted on the Beach South, XX Zone or Valley Zone.
Drilling conducted in 2010 is expected to allow mine planning and optimisation work on the Beach South and XX Zone.
Significant drilling results (assays) are pending for drilling in these zones. in 2010 over 17,000m of diamond drilling has been completed.
Ironbark believes that the drilling in 2010 will result in increased confidence levels (JORC Resource categories) and global tonnages in the revised resource estimate due for completion later in 2010.
Citronen currently hosts in excess of 10 billion pounds of zinc (Zn) and lead (Pb).









