Strandline Resources - New Zircon Rich Mineralisation Drilled at Madimba East
Strandline Resources (ASX:STA) released positive heavy mineral results from its Madimba East prospect in southern Tanzania. Results included 9.0m at 4.1% THM, 7.5m at 5.4% THM, 7.5m at 4.2% THM and 7.5m at 3.9% THM. The valuable heavy mineral (VHM) content averaging 80% comprising 67% ilmenite, 9% zircon and 3% rutile. These results follow positive recent announcements for Fungoni and Tajiri, also in Tanzania.
• Zircon rich heavy mineral sands intersected with aircore (AC) drilling at the 100% owned Madimba East project, near the port town of Mtwara in southern Tanzania;
• Exploration drilling at Madimba East has defined a continuous mineralised zone extending over 2000m of strike, up to 250m wide and up to 9m thick;
• Best drill results at Madimba East include (all from surface):
· 9.0m @ 4.1% Total heavy minerals (THM),
· 7.5m @ 5.4% THM,
· 7.5m @ 4.2% THM, and
· 7.5m @ 3.9% THM;
• Valuable heavy mineral (VHM) content averaging 80% comprising 67% ilmenite, 9% zircon and 3% rutile;
• Ilmenite averages 55.3% TiO₂ with attractive grainsize average above 100µm;
• Low contaminants - the zircon has low aluminium, titanium, and iron oxide levels, as well as low thorium; and
• Further drilling is required to extend the mineralisation to the south.
Tom Eadie, Managing Director commented “This new discovery of mineralisation at Madimba East is very exciting. Along with Strandline’s Indicated Resources at Tajiri near Tanga in the north, at Fungoni south of Dar es Salaam along the central coast and now at Madimba East near Mtwara in the south, Strandline now has mineralised areas right along the 1000 km long Tanzanian coastline. More exploration is required to turn this immense potential into significant production.”
Madimba East Drilling Results (100% Strandline)
Following a successful drill programme at the Tajiri Prospects in northern Tanzania that outlined two Indicated Resources and the completion of a Scoping Study on the Indicated Resource at Fungoni near Dar es Salaam, both announced earlier this year, the results from a short drill programme at Madimba East are now available.
Madimba East is located within the Southern Region Project in Tanzania (Figure 1). In early 2016, a maiden aircore (AC) drill programme was undertaken at Madimba East with a single line of drilling completed at Madimba. A total of 73 holes for 1,372.5m of drilling was completed across the project. A new zone of mineralisation has been located which will be the subject of future drill programmes.
Total heavy mineral (THM) analyses have all been received for the Madimba East AC drill program with the results indicating a zone 300m wide with thicknesses up to 9m. Significant results at Madimba East include (all from surface): 9m @ 4.1% THM, 7.5m @ 5.4% THM, 7.5m @ 4.2% THM and 7.5m @ 3.9% THM.
Excellent valuable heavy mineral (VHM) assemblage results have previously been reported (ASX release 10 March, 2015) from Madimba, which include:
· VHM contents with an average of 80% and low trash (contaminants)
· Ilmenite content of 67% of the assemblage
· Zircon content averaging 9% o Rutile averaging 3%
· Ilmenite TiO₂ content averages 55.3% with an attractive grainsize average above 100µm
· Typically sub-45μm silts comprise an acceptable 15 to 25% of the mineralisation.
The results to date are very positive with the identification of some key parameters common to existing mineral sand operations including shallow high grade zones with high VHM contents, low trash and low slimes. In addition, the prospects are located less than 20km from well-developed port facilities at Mtwara that has capacity to export containerised high unit value concentrates or sufficient acreage to set up conveyors or other methods of bulk handling concentrate.
Additional drilling is planned to the south of Madimba East prospect targeting an additional 3km of strike which has not been drill tested. Historic surface sample data from the untested zone averaged > 1% THM, which is highly encouraging from an exploration perspective.
The results of the AC drilling are summarised in Figure 2 and Figure 3.