Lake Hopkins Exploration Update
Perth, July 3, 2014 AEST (ABN Newswire) - Rum Jungle Resources Ltd (
ASX:RUM) Lake Hopkins Exploration Update. Heli-air core drilling was completed at Lake Hopkins (WA) on 13 June. Eighteen holes were drilled for 382 m with holes drilled to an average 21 m depth; Brine results have been received and reveal medium to high grade potassium sulfate with up to 10,371 mg/L K2SO4.
Highlights
- Heli-air core drilling was completed at Lake Hopkins (WA) on 13 June. Eighteen holes were drilled for 382 m with holes drilled to an average 21 m depth
- Brine results have been received and reveal medium to high grade potassium sulfate with up to 10,371 mg/L K2SO4
- Lake Hopkins brine is similar in composition to Karinga Lakes and potentially suitable for SOP recovery
- The average Static Water Level (SWL) is 0.25 m for 16 holes drilled on the lake surface
- Fourteen, of eighteen holes, either seeped or flowed brine
- Lake Hopkins - E69/2814 is 100% owned by Rum Jungle Resources Ltd
- An inferred potash brine resource will now be estimated by an independent hydrogeological consultant.
Drilling was carried out by a specially modified air core rig with standard 3 inch (75 mm) air core rods. The drill rig, air compressor, support pontoon, heli-cage and crew were moved around the lake with a Huey helicopter.
The deepest hole was drilled to 30 m, however sandstone basement was generally reached at around 20 m depth and holes ended at sandstone refusal. A positive outcome is that water was still brine quality at the top of the sandstone basement, indicating extra depth of brine may be expected upon deeper drilling with an RC rig if the sandstone is porous or fractured.
Sixteen holes were drilled on the lake surface with an average SWL of 0.25 m.
----------------------------------------------------------------------Hole id Easting Northing Total Depth SWL K K2SO4 Mg SO4 (m) (mg/L) (mg/l) (mg/L) (mg/L)----------------------------------------------------------------------LHAC001 470337 7314779 24 0.2 4255 9488 4983 38227 LHAC002 468990 7316658 19 0.3 4217 9404 5177 34860 LHAC003 469510 7319119 17 0.2 4409 9832 3320 37055 LHAC004 472078 7317178 22 0.3 4651 10371 3235 34824 LHAC005 473238 7319723 24 3.0 313 698 676 5708 LHAC006 475527 7318809 19 0.4 3177 7084 6638 30724 LHAC007 477388 7316711 24 0.1 3486 7774 6230 25691 LHAC008 479153 7317657 16 0.2 3799 8472 2940 29002 LHAC009 477683 7319865 19 0.3 4466 9959 3532 30149 LHAC010 474098 7323637 21 0.2 4056 9044 3722 28143 LHAC011 472789 7324464 24 4.0 - - - - LHAC012 479172 7323647 21 0.3 3417 7619 2500 24182 LHAC013 481356 7322522 22 0.3 3904 8707 2549 26471 LHAC014 481662 7318411 16 0.2 4107 9158 3692 34153 LHAC015 485285 7319142 17 0.1 3510 7826 7291 34690 LHAC016 485905 7322180 30 0.1 4515 10069 3917 31916 LHAC017 484069 7323778 25 0.4 3833 8547 2719 27653 LHAC018 479023 7321325 22 0.4 3495 7794 2537 25265----------------------------------------------------------------------
Rum Jungle Resources Ltd has a Mineral Exploration Access Agreement with the Ngaanyatjarra Council and the Yarnangu Ngaanyatjarra Parna Aboriginal Corporation over E69/2814 and felt very welcomed by the people of the Tjukurla community during exploration activities.
Brine results are comparable to Karinga Lakes with high sulfate and potassium values in all holes except LHAC005 and LHAC011 which were drilled on Islands, and are below the 3000 mg/L potassium minimum grade cut-off used in the Karinga Lakes JORC resource.
Near surface brine flows very well through coarse gypsum sands. Beneath this, wet clays, clayey sands and sandy clays overlie the sandstone basement.
Lake Hopkins lies at the western end of the Central Australian Groundwater Discharge Zone and the Karinga Lakes lie on the eastern end. With high grade brine at both ends of the discharge zone, Lake Amadeus which RUM has 100% under application located in the middle, looks to have high potential to produce SOP quality brine as well. Sediment samples have been sent for geochemical assay and XRD analysis.
To view all figures and tables, please visit:
http://media.abnnewswire.net/media/en/docs/ASX-RUM-408320.pdf
About Verdant Minerals Ltd
Verdant Minerals Ltd's (ASX:VRM) strategic intent is to create shareholder value through the discovery, development and operation of fertiliser and industrial mineral projects, located in close proximity to existing transport infrastructure, with a primary focus on the Northern Territory of Australia.
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