onlytu gsten and gold development and mineral disc very.
About Legacy Iron Ore
Legacy Iron Ore Limited ("Legacy Iron" or the
"Compa y") is a Western Australian based
Compa y, focused on iron ore, base metals,
Legacy Iron's mission is to increase
shareholder wealth through capital growth,
created via the discovery, development and useop ration of profitable mining assets.
The Company was listed on the Australian Securities Exchange on 8 July 2008. Since then, Legacy Iron has had a number of iron ore, manganese and gold discoveries which are now undergoing drilling and resource definition.
Board
personalMr Sumit Deb, Non-Executive Chairman Chief Executive Officer
Mr R kesh Gupta, Chief Executive Officer
nd bo rd member
Mr Dev nathan Ramachandran, Non- Executive Director
Mr Amitava Mukherjee, Non-Executive
Director
Mr S mnath Nandi, Non-Executive Director Ben D novan, Company Secretary
Key Projects
Mt Bevan Iron Ore Project
South Laverton Gold Project
East Kimberley Gold, Base Metals and REE Proj ct
Enquiries
Rakesh Gupta
Phone: +61 8 9421 2000
ForASX Codes: LCY
LEVEL 6
200 ADELAIDE TERRACE PERTH WA 6000
PO BOX 5768
ST GEORGES TERRACE WA 6831
Phone: | +61 8 9421 2005 |
Fax: | +61 8 9421 2001 |
Email: | info@legacyiron.com.au |
Web: | www.legacyiron.com.au |
ASX Announcement
3rd March 2022
Revised Resource Estimates of the
Mt Celia Gold Project
Highlights include:
- Total Mineral Resources increased to 6.97MT @1.39 g/tonne for 312,600* ounces
- Indicated classification increased by 8% and the Total Mineral Resources improved by 3,000 ounces
- 54% of resource in Indicated category with contained gold of 168,300 ounces
-
Kangaroo Bore contained gold totals 231,800 ounces at
1.27 g/t* - Blue Peter contained gold totals 64,500 ounces at 2.07 g/t*
- Margot Find resource remains unchanged gold @ 16,300 ounces at 1.44g/t*
- The database was updated with additional drill holes conducted in the second half of 2021 which included 33 RC drill holes for 2640m within the project
- Revised mining studies completing soon to determine projects economic viability
Legacy Iron Ore Limited (Legacy Iron or the Company) is pleased to advise that the recently completed resource estimation for the Kangaroo Bore, Blue Peter and Margot Find deposits of the Mt Celia project has resulted in an increase to the total Mineral Resources of the project and with the Indicated category classification increasing by 8%. The revision in the geological and resource model has been completed by Andrew Hawker, Principal Geologist, HGS Australia (HGS). As per the new estimates, Mt Celia has an Indicated and Inferred resource endowment of 6.97 MT @ 1.39 g/ tonne for 312,600oz (see Table 1). The revised total
*Please see table 1,2,3 and 4.
For personal use only
Mt Celia gold resource endowment with almost 54% i.e., 168,300 Oz as indicated Mineral Resources, provides further confidence to the economic potential of the Mt Celia project.
These estimates continue to support the Company's aim of developing the Mt Celia gold project into a mine. Further, the Company believes there is significant potential to extend existing mineralization and to discover new mineralization within the project.
Mineral Resource Statement
The previous Mineral Resource estimates for Kangaroo Bore and Blue Peter were prepared by SRK in November 2017, January 2018, December 2020, and by HGS in July 2021 respectively. Since then, Legacy Iron has completed additional drilling programs aimed at increasing the geological confidence and increasing the quantity of the resource.
The current Mineral Resource estimates were prepared using the results from drilling programs conducted up to 2021. No additional drilling has been carried out since this period.
The current Mineral Resource Statements for Kangaroo Bore, Blue Peter and Margot are presented in Table 1, 2, 3 and 4, respectively. The estimates for all deposits are based on various cut-off grades applied to oxidation horizons of 0.5g/t oxide, 0.6g/t transitional, and 0.7g/t fresh. The lower cut-off grades reflect modest operating costs with marginal increases based on weathering profiles. The majority of the indicated resource is within the upper 150m and therefore considered acceptable to open pit mining.
The resource estimation results are summarised in tables 1, 2, 3 and 4
Classification | Tonnes | Au (g/t) | Ounces |
Indicated | 3,663,000 | 1.43 | 168,300 |
Inferred | 3,312,000 | 1.36 | 144,300 |
Total | 6,975,000 | 1.39 | 312,600 |
Table 1 Mt Celia - Mineral Resource estimate as at Feb 2022 * | |||
Classification | Tonnes | Au (g/t) | Ounces |
Indicated | 3,024,000 | 1.27 | 123,100 |
Inferred | 2,631,000 | 1.28 | 108,700 |
Total | 5,655,000 | 1.27 | 231,800 |
Table 2 Kangaroo Bore - Mineral Resource estimate as at Feb 2022 *
`
For personal use only
Classification | Tonnes | Au (g/t) | Ounces |
Indicated | 639,000 | - 2.20 | 45,200 |
Inferred | 328,000 | 1.83 | 19,300 |
Total | 967,000 | 2.07 | 64,500 |
Table 3 Blue Peter - Mineral Resource estimate as of Feb 2022*
Classification | Tonnes | Au (g/t) | Ounces |
Indicated | 0 | 0.00 | 0 |
Inferred | 353,000 | 1.44 | 16,300 |
Total | 353,000 | 1.44 | 16,300 |
Table 4 Margot Find - Mineral Resource estimate as of Feb 2022*
Revised Resource at Mt Celia Gold Project - Feb 2022
The Mineral Resource estimates are classified in accordance with the 2012 edition of The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code 2012). The classification of lodes as Indicated and Inferred resources is shown in figure1.
Figure 1 Classification of individual lodes with each prospect area.
For personal use only
Resource Estimation overview
The database used for the resource estimation contains 540 reverse circulation (RC) and 29 diamond drill (DD) holes.
The drilling has been performed on section lines oriented orthogonal to the general strike of the lodes. For both deposits, the nominal drill hole spacing is 25 m between sections, and 15-20 m along sections, with most of the holes dipping at 60° to the southwest (221°). Drill hole collar plots for Kangaroo Bore and Blue Peter are presented in figures 2 & 3. Summaries of the total resource area drill quantities retained in the resource estimation datasets are presented in Table 5 . Legacy Iron conducted all the drilling from 2010 onwards. The earlier programs were conducted by several companies, including Anglo, Wells, Herald, and Union.
Legacy Iron included a number of quality assurance protocols in its drilling program, including twinned DD and RC holes, field duplicates, laboratory duplicates, certified standards and coarse crushed blanks. HGS assessed the quality assurance data and did not identify any data quality issues, providing some assurance that the primary data were of sufficient reliability for the preparation of Mineral Resource estimates. Limited verifiable QAQC data were available for the historical data. However, comparisons with the Legacy Iron data did not show evidence of significant issues.
RC | DD | Unknown | All | ||||||||
Year | Holes | Metres | Holes | Metres | Holes | Metres | Holes | Metres | |||
unknown | 7 | 564 | 7 | 564 | |||||||
1900 | 1 | 120 | 1 | 120 | |||||||
1986 | 15 | 1,290 | 1 | 155 | 16 | 1,445 | |||||
1987 | 44 | 2,497 | 5 | 428 | 49 | 2,925 | |||||
1988 | 13 | 1,120 | 7 | 1,266 | 20 | 2,386 | |||||
1989 | 4 | 826 | 4 | 826 | |||||||
1991 | 7 | 1,824 | 7 | 1,824 | |||||||
1994 | 133 | 6647 | 133 | 6647 | |||||||
1996 | 34 | 3,353 | 34 | 3,353 | |||||||
2004 | 25 | 3012 | 25 | 3012 | |||||||
2010 | 85 | 4,890 | 85 | 4,890 | |||||||
2012 | 6 | 1,236 | 6 | 1,236 | |||||||
2016 | 14 | 1,858 | 14 | 1,858 | |||||||
2017 | 31 | 3228 | 31 | 3228 | |||||||
2018 | 21 | 2,202 | 21 | 2,202 | |||||||
2020 | 68 | 6122 | 5 | 461 | 73 | 6583 | |||||
2021 | 50 | 3,720 | 50 | 3720 | |||||||
Total | 540 | 41295 | 29 | 4960 | 7 | 564 | 576 | 46819 | |||
Table 5 Total drilling type and meters
For personal use only
Figure 2 Kangaroo Bore lodes and drillhole collars
Figure 3 Blue Peter lodes and drillhole collars
Geological Modelling
The mineralisation is hosted within sets of narrow, sub-parallel lodes that strike to the northwest and dip steeply to the northeast. All 3 prospect areas have each been identified over strike lengths of approximately 2km. The interpretation comprises 19 lodes separated into 3 prospect areas. Mineralised lodes are defined by their respective string and wireframe number for typical cross sections of the deposit are given as figure 4 and 5.
Kangaroo: Lodes 1-9 (Figure 2) Blue Peter: Lodes 13-19 (Figure 3)
HGS prepared one geological models for all three prospects with boundaries based on lode extents and the model orientated 310°.
An evaluation of the statistical background was used for identifying the lower cut-off in the interpretation which is defined by the variation between normal background values and the commencement of mineralisation from histograms of the entire dataset for the Mt Celia area.
A background value of 0.25g/t was used in the interpretation with a minimum of 2m downhole
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Legacy Iron Ore Limited published this content on 02 March 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 02 March 2022 21:44:05 UTC.