
Dynasty Metals Australia Limited (ASX:DMA) Quarterly Report For The Period Ended 31 December 2009
Sydney, Feb 2, 2010 AEST (ABN Newswire) - Dynasty Metals Australia Limited's (
ASX:DMA) is pleased to provide a Quarterly Activities Report for the period ended 31 December 2009.
EXPLORATION - PRIORITIES - PRAIRIE DOWNS
The Prairie Downs iron ore prospect was the focus of Dynasty's exploration efforts during the quarter. Drilling identified substantial tonnages of iron rich material on E52/1927 as described in Dynasty's November 5th and 16th 2009 announcements. The geological model was also described in these announcements.
Marra Mamba Prospect
The Stage 1 Reverse Circulation (RC) drill holes, MMRC001 to MMRC015 was extended in a Stage 2 program (MMRC016 to MMRC030) with a view to gaining a better understanding of the mineralisation. The final results from all of these holes are presented in Table 1. These results confirm that the intercepts of Marra Mamba Iron Formation to date have been iron-rich with calcined in-situ grades ranging from 55% Fe to 65% Fe, and showing low concentrations of phosphorous, typically 0.04% to 0.07% P.
The results demonstrate Dynasty's early exploration success by confirming with drilling the presence of strongly mineralised sections of the important Marra Mamba Iron Formation up to 100m thick and with a shallow dip to the west. These results provide confidence for future exploration for Marra Mamba on Dynasty's tenements.
TABLE 1: Key Results Marra Mamba Project - Summarised ---------------------------------------------------------Hole From To Intersection CaFe(1) Length Fe % % P %--------------------------------------------------------MMRC003 0 27 27m 53.10% 58.70% 0.069%Incl 8 18 10m 52.00% 59.00% 0.098%And 18 25 7m 58.50% 64.20% 0.055%MMRC004 9 67 58m 56.20% 61.30% 0.063%Incl 16 27 11m 60.50% 65.50% 0.047%And 38 62 24m 59.10% 64.10% 0.073%MMRC005 5 61 56m 50.50% 55.10% 0.044%Incl 9 50 41m 54.00% 58.90% 0.041%MMRC006 18 24 6m 58.00% 61.80% 0.043%MMRC007 0 42 42m 54.70% 60.50% 0.069%Incl 6 24 18m 57.20% 63.00% 0.080%MMRC009 0 14 14m 50.90% 54.80% 0.035%MMRC010 0 47 47m 54.10% 58.90% 0.055%Incl 5 38 33m 56.30% 61.10% 0.056%MMRC011 1 61 60m 50.10% 55.10% 0.050%Incl 18 61 4m 51.90% 57.40% 0.056%MMRC012 7 17 10m 52.80% 57.50% 0.043%MMRC015 0 43 43m 50.90% 55.20% 0.051%Incl 17 31 14m 59.50% 64.00% 0.061%MMRC017 17 27 10m 49.41% 57.00% 0.078%MMRC020 2 24 22m 55.74% 59.91% 0.032%Incl 4 21 17m 58.06% 61.92% 0.030%MMRC021 9 17 8m 59.05% 60.64% 0.030%MMRC022 13 27 14m 54.50% 60.42% 0.030%MMRC023 5 60 55m 51.64% 58.32% 0.042%Incl 18 34 16m 54.58% 60.83% 0.030%And 39 57 18m 52.75% 60.42% 0.046%MMRC024 11 62 51m 55.55% 61.11% 0.056%Incl 22 42 20m 57.53% 62.73% 0.049%And 46 61 15m 60.44% 65.38% 0.059%MMRC027 17 27 10m 51.68% 57.53% 0.075%MMRC028 1 44 43m 52.51% 57.47% 0.042%Incl 6 14 8m 54.65% 59.14% 0.031%And 28 38 10m 58.77% 63.80% 0.043%MMRC029 22 38 16m 57.57% 61.42% 0.040%--------------------------------------------------------
(1) CaFe = "calcined or LOI-free grades" calculated as (Fe*100)/(100-LOI)
The 2010 field program will focus on looking for possible buried or hidden deposits of the Marra Mamba and Brockman Iron Formations on Dynasty's Prairie Downs tenements, in location.
Spearhole and Northern Channel Iron Prospects
The drilling completed in the December 2009 quarter, intersected several Tertiary Channel Iron deposits (CID) which were based on sub-crop of Channel Iron and a very large area of younger, Detrital Channel Iron (DID) with thicknesses from surface ranging from 15 to 35m. The DID deposit appears to be thickening to the east and south east along the Spearhole drainage system.
Drilling confirmed that large areas of the northern portion of E52/1927 contain several hundred million tonnes of Detrital Channel Iron and smaller occurrences of Tertiary Channel Iron. Drilling shows that these deposits deepen and remain open to the south and to the south east is shown of the area tested.
The material is expected to be low grade (ranging from 10% Fe to 40% Fe - 'order of magnitude') and as such will require beneficiation. Bulk samples (~20kg, ~200kg) and selected samples were taken to determine the beneficiation 'flow sheet' and to prove that the material "can be beneficiated" (Proof of Concept).
Beneficiation is a "physical separation process" which involves for the detrital iron deposits minimal crushing and the relatively simple removal of silica using a combination of screens, magnetic, jig and heavy media separation techniques.
Should this material be capable of beneficiation the 2010 program will be designed to accurately determine the costs of this beneficiation process. Mining costs for a large scale project (15 to 20M tonnes/a) are expected to be low because there is no overburden as the Detrital Iron deposits start at surface.
Following from the compilation of the drill assay results, compilation of a JORC Compliant Resource and the review of the beneficiation results (during the March 2010 quarter) Dynasty will be in a position to firm up on a proposed 20,000m drilling program; together with commercial studies which will involve bulk sampling, metallurgical (beneficiation) testing and pre development feasibility studies.
Should Dynasty decide to proceed, the 2010 work program will be designed to define JORC Compliant Reserves, define mining plans and costs, confirm beneficiation costs, determine and define infrastructure (rail and port) access options and costs and begin to develop off-take partner relationships.
Homestead Prospect
Dynasty collected during the program several 40kg samples from an ancient and vast coarse boulder "basal hematite-clast conglomerate" which is located on the margin between the Bangemall and Hamersley basin. The basal conglomerate, referred to as the Homestead Prospect, covers an area within Dynasty's tenements of >100km2 and is estimated from field observations to be possibly up to 40m thick in places.
On the north and western contact at the intersection of regional north east and north west trending faults large hematite clasts (presumably derived from the Hamersley Basin) within a heavily ferruginised matrix have been observed and were sampled.
Strategic Location
Dynasty tenement at Prairie Downs are located in a highly strategic region of the Pilbara, west, south and east of Mt Newman where BHPB's flagship Mt Whaleback mining operation is located.
The tenements are all centrally located near to advanced exploration projects and existing major iron ore mining operations and railway and road infrastructure.
CORPORATE
Cash Position at 31 December 2009: 2,500,860
Capital Structure
Quoted shares:
- 67,681,312
Quoted options:
- 20,917,029 exercisable at A$0.35 expiring 28 February 2010
Unlisted options:
- 500,000 exercisable at A$0.20 expiring 1 September 2010
- 18,000,000 exercisable at A$0.20 expiring 21 December 2011
For the complete Dynasty Metals Quarterly Report for the period ended 31 December 2009, please click the link below:
http://www.abnnewswire.net/media/en/docs/62204-ASX-DMA-478580.pdf
Contact
Malcolm Carson
Technical Director
Tel: +61-2-9229-2702
Lewis Tay
Executive Director
Tel: +61-2-9229-2710
Ian Levy
Chairman
Tel: +61-2-9229-2704
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