NORTHERN TERRITORY GOLD MINES N.L. EXPLORATION LICENCE 8055 HORNERS CREEK SOUTH FIRST ANNUAL REPORT - FOR YEAR ENDING 26/7/94 REPORT NUMBER: NTGM/8055/1 Prepared by: AJ Hosking AJ Hosking and Associates Pty Ltd Darwin October 1994 TABLE OF CONTENTS Page SUMMARY INTRODUCTION 1 LOCATION AND ACCESS 3 SURFACE TENURE 3 PHYSIOGRAPHY 3 REGIONAL GEOLOGY 4 LOCAL GEOLOGY 6 KNOWN MINERALISATION 7 PREVIOUS GEOLOGICAL STUDIES AND 8 EXPLORATION ACTIVITIES EXPLORATION CRITERIA 10 WORK COMPLETED IN YEAR 1 OF TENURE 10 EXPENDITURE STATEMENT FOR YEAR 1 11 PROPOSED EXPLORATION PROGRAM AND BUDGET FOR YEAR 2 12 REFERENCES 14 APPENDICES 1. NTGS MINE DATA SHEETS FIGURES Figure 1 Location Figure 2 Physiographic and Cultural Features from Division of National Mapping Figure 3 Aerial Photograph of Licence Area Figure 4 Soil Types from Hooper (1969) Figure 5 Vegetation Types from Story (1969) Figure 6 General Geology of the Central Part of the Pine Creek Inlier from Nicholson and others (1994) Figure 7 Stratigraphy of the Central Part of the Pine Creek Inlier from Nicholson and others (1994) Figure 8 Regional Geology of the McKinlay River Area from Stuart-Smith and others (1986) Figure 9 Aeromagnetic Contours (BMR) from Goodeve (1966) Figure 10 Aeromagnetic Contours (Billiton, Northern Gold) from Mackay (1991), Stokes (1991) Figure 11 Highlights of Previous Exploration from Partington (1989), Mackay (1991, 1992), Stokes (1991) SUMMARY The licence was granted to Northern Territory Gold Mines N.L. on 27/7/93 for a period of six (6) years. The licence area contains low-grade metasediments and possible metavolcanics of Palaeoproterozoic age which have been folded strongly and intruded in at least one locality by pro-orogenic dolerite. Research and data compilation comprised the main exploration activities in the first year of tenure. All data were processed digitally per a Geographic Information System. Open-file records of Commonwealth and Territory government agencies were the main sources of data. A considerable amount of historical geological and exploration data was processed. The activities in the first year have demonstrated that subsequent exploration should be focussed upon structural targets with particular emphasis given to soil-covered areas. INTRODUCTION Exploration Licence (EL) 8069 of nine one minute by one minute graticular blocks was granted to Northern Territory Gold Mines N.L. (NTGM) by the Northern Territory Department of Mines and Energy (NTDME) on 27/7/93 for a period of 6 years. The first licence year expired on 26/7/93. The licence area is one of 11 comprising the McKinlay River project area of NTGM. The main administrative details of the licences are provided in Table 1 below. Table 1 Details of McKinlay River ELs EL No. of Date of Term Expenditure Title no, blocks grant (years) commitment year 7155 4 05/12/90 6 $ 8000 4 7674 17 31/03/92 6 $ 5000 3 8055 9 27/07/93 6 $20000 1 8056 14 15/09/93 6 $30000 1 8069 36 27/04/93 6 $35000 1 8161 1 20/09/93 6 $ 5000 1 8170 42 16/07/93 6 $35000 1 8184 62 10/12/93 6 $30000 1 8228 24 31/12/93 6 $23000 1 8424 34 24/12/93 6 $20000 1 8425 3 24/12/93 3 $10000 1 Transfers of the title for ELs 7155 and 7674 from the original holder, Robert Biddlecombe were approved by NTDME on 29/10/93. Statutory areal reductions also have occurred as follows: EL 7155 - 15 blocks originally ; first reduction 5/12/92 with 8 blocks retained ; second reduction 17/1/94 with 4 blocks retained EL 7674 - 34 blocks originally ; first reduction 15/7/94 with 17 blocks retained The total number of blocks in the project area is 246 of which EL 8055 comprises approximately 4 per cent. The initial expectation of the company was that a very substantial field program in the project area would have been completed in the 1994 dry season, including a substantial component for EL 8055. However, unforseen problems with the public float of NTGM's parent company, Australian Gold Mines No Liability (AGM) on the Australian Stock Exchange caused major delays and difficulties in funding the proposed exploration program. Consequently, only research, administration and data management activities have occurred in Year 1. Considerable time, effort and expenditure has been devoted to digitising relevant technical data and establishing a Geographic Information System (GIS) for ongoing storage, processing, interpretation and presentation of such data per Ekos Research (NT) Pty Limited of Darwin. Details of the GIS are contained in the First Annual Report for EL 8069. Part of one Mineral Claim (MCN 327), covering ground in the northern part of the Mount Wells Mining Centre, appears to lie within the licence area. However, corner pegs have not been checked to determine if this is the case. The main exploration target of the company is large-tonnage, low-grade open-pittable gold mineralisation similar to that which occurs at major deposits at Union Reefs and Mount Todd. The potential for high grade gold deposits amenable to underground mining, and for base-metals deposits also will be assessed routinely during exploration. This report contains details of the geology of the licence area, the results of previous exploration plus the research and data management activities which have occurred in Year 1 and part of Year 2 (to 30/9/94). No sacred/significant sites are registered or recorded with the Aboriginal Areas Protection Authority. LOCATION AND ACCESS The location of EL 8055 is shown in Figure 1. The area occupied by the other ELs which with EL 8069 comprise the company's McKinlay River project area also is shown. The licence area occurs in the southwest part of the total area which is held. The licence area is situated approximately 40 km northnorthwest of the township of Pine Creek. Vehicle access to the area is gained most conveniently from the south via the Stuart Highway, thence via the good, unsealed road adjacent to the old railway line and thence via the good, unsealed Burrundie Siding - Mount Wells - Mount Harris road. The old Mount Wells Mining Centre lies to the immediate south of the southern boundary of the area. Access can be gained also from the west via an approximately east-west track between Ban Ban Springs homestead and the McKinlay Gold Mine (within the contiguous EL 8069) and thence south to the licence area. However, access from the west is complicated by the fact that, for much of its route, this track passes over a black-soil plain which is difficult, if not impossible, to traverse by vehicle in the wet season (particularly over the central portion of the licence area between Compass Creek in the northwest and McKinlay River in the east). A track leading to the Mavis Tin Mine and commencing near the southeast corner of the licence area offers convenient access to the western part. SURFACE TENURE The licence area lies wholly within Ban Ban Springs Perpetual Pastoral Lease 1111 (NT Portions 695 and 1344). This property supports beef raising. PHYSIOGRAPHY The principal physiographic and cultural features of the licence area are shown in Figure 2. The area is dominated by Horners Creek, a major tributary of the McKinlay River. The creek drains from the south and west and rises at the north-south drainage divide between the McKinlay and Margaret river systems as shown by McGowan (1989). Numerous, permanent waterholes occur along Horners Creek. A major physiographic study of the region bordered by the Alligator and East Alligator rivers was undertaken by CSIRO in the period 1965 - 1969 This study covered the licence area. Several authors, notably Williams (1969), Story (1969) and Williams and others (1969), contributed papers to a major publication which is the principal source of physiographic data in this report. Additional data have been obtained from the Vegetation Map of the NT published by the Conservation Commission of the NT ((Wilson and others, (1991)). The distributions of soil and vegetation types are shown in Figures 3 and 4. Two major land units are recognised by Williams and others (1969). These are the dissected foothills and alluvial floodplains. The former unit is characterised by, low hills and rubble-covered rises formed by metasedimentary rocks with intervening alluvial flats. Remnants of strike ridges also are present. Woodland and/or stunted woodland (Box and Bloodwood) occur on the hills and rises with a grassland under-story with grassland on the flats. Soils vary from leached, skeletal types to yellow, loamy types on the elevated areas to alkaline types on the flats. The latter unit is marked by floodplains, deeply incised channels, levees and billabongs. Sands and silts occur on floodplains and in channels while areas of loamy to sandy alkaline and/or acid soils also are present. Paperbark (Melaleuca) woodland and open savannah grassland are distinctive features of this land unit. The licence area has a monsoonal climate with an average annual rainfall in the order of 1500 mm, with most rain falling in the summer months. No waterbores are known to exist within the licence area. REGIONAL GEOLOGY The licence area lies within the Pine Creek Inlier (or Geosyncline). This major tectono-sedimentary unit contains pelitic and psammitic sediments with minor volcanics of Palaeoproterozoic age which developed in a basinal setting on granitic basement of Late Archaean age. The sedimentary pile subsequently was deformed and metamorphosed (mostly to greenschist facies) by the Top End Orogeny which lasted for approximately 180 Ma (1870 - 1690 Ma). Pre-orogenic sills of mafic intrusives and syn- to post - orogenic granitoids intrude the metasedimentary and metavolvanic rocks. Most granitoids were emplaced in the waning stages of the tectonism. A voluminous literature has developed for the Inlier over more than 50 years commencing with studies by the Aerial, Geological and Geophysical Survey of Northern Australia (AGGSNA) of mine areas and their surrounds. A considerable boost to the geological studies and to exploration followed the discovery of uranium at Rum Jungle in 1948. However, it is beyond the scope of this report to review this literature and only key publications have been referenced, notably those of Walpole (1968), Ferguson (1980), Stuart-Smith and others (1986), Needham and others (1988), Stuart-Smith and others (1993) and Nicholson and others (1994) which are particularly relevant to the licence area and its near surrounds. Geological maps at 1:63,360, 1:100 000 and 1:250 000 scales with accompanying reports produced by Commonwealth and NT government agencies are major components of this extensive database. A vast amount of data has accumulated from base-metal, gold and uranium exploration programs. Studies dealing with specific features of sedimentation, tectonism, magmatism and metallogenesis also have been features of the developing literature. Key references dealing with the mineralisation of metallogenesis of the Inlier are those of Crohn (1968), Needham (1981), Nicholson and Eupene (1984), Nicholson & Eupene (1990), Needham and de Ross (1990), Ahmad and others (1994), Ormsby and others (1994) and Bajwah (1994). In this report, the regional geology and stratigraphic framework proposed by Nicholson and others (1994) are adopted (see Figures 6 and 7). These authors have advocated a three-fold lithostratigraphic subdivision rather than the four-fold subdivision advocated by earlier BMR authors and applied widely in recent years. The significance of rim faults around major granitic bodies also is highlighted by Nicholson and others (1994). Such faults also were postulated by authors reporting on airborne geophysical surveys of the McKinlay River area in the 1960s eg. Goodeve (1966). The licence area contains metasediments of the lower part of the Finniss River Group (Burrell Creek Formation) and possibly (?) metasediments and minor metavolcanics of the upper part of the Frances Creek Group (Mount Bonnie Formation, Gerowie Tuff and Koolpin Formation - comprising the South Alligator Group of earlier BMR authors). However, units of the older Frances Creek Group are believed to be present only in the extreme western part of the licence area. Large, granitic bodies to the near west and south of the licence area (components of the Cullen Bathylith) probably are temporally, spatially and genetically related to the gold mineralisation in the McKinlay River area. The mineralisation at the McKinlay Gold Mine to the north of EL 8055 appears to be within the contact metamorphic aureole of the Minglo Granite component of the Cullen Bathylith. The tin (-copper -tungsten) mineralisation in the Mount Wells Mining Centre to the near south of EL 8055 occurs in six quartz - sulphide lodes spatially above greisenised granite. Some lodes contain up to 0.5% Cu. Pelitic and psammitic metasediments (originally mudstone, siltstone and greywacke) are predominant in the Burrell Creek Formation. The Koolpin Formation consists of pyritic and carbonaceous pelites plus iron-rich chert and iron formation. The Gerowie Tuff consists of felsic tuffs, tuffaceous chert, iron formation and siltstone. The Mount Bonnie Formation has a comparatively lower component of chemical sediments compared with the two underlying units and a comparatively higher psammitic component in the form of greywacke. The metasediments and metavolcanics in the general region have undergone at least two phases of folding. The first phase produced tight to isoclinal, upright folds about NNW - SSW axes while a second, gentler phase produced broad, open folds about east-west axes. . LOCAL GEOLOGY The geology of the licence area is shown in Figure 8. The licence area contains mainly metapelites and metapsammites of the Burrell Creek Formation plus (?) very limited outcrop of the upper units of the older Frances Creek Group. Tight, complex folding is evident. Zamu Dolerite, presumably a sill, crops out to a very limited extent near the eastern boundary of the licence area and trends NNW - SSE, as does outcrop of Gerowie Tuff in the near vicinity (close to the east bank of the McKinlay River). White (buck) quartz veins and blows are common throughout the licence area, particularly in the western part. Faults and shears similarly are common in the western and central parts, with dominant north - south and northwest - southeast orientations. The effects of contact metamorphism (notably hornfelsing) due to the Prices Springs Granite, a component of the Cullen Bathylith, also are evident in the western part of the licence area. Geophysical evidence indicates that granite also underlies most of the complexly folded metasediments, metavolcanics and Zamu Dolerite to the east of the licence area. KNOWN MINERALISATION The former Mount Wells Policy Reserve occupied part of the licence area. This reserve, which was created in 1964 to encourage small-scale mining, was revoked in May, 1988. Old alluvial workings forming part of the Mount Wells Mining Centre lie just inside the southern boundary of the licence area. The Mount Wells Tin Mine was discovered in 1879 and worked intermittently until 1929, with recorded production being approximately 100,000t grading 1% Sn. A few tonnes of hand-picked ore grading 37% Cu also were produced in 1917. The Mount Wells Battery was established in 1961 as an aid to prospecting and small-scale mining in the Pine creek district. Subsequently, the battery was upgraded and then sold eventually in 1981 to Jingellic Minerals N.L., a company which acquired title to the Mount Wells Tin Mine in 1970. Ownership of the mine and facilities then passed in 1983 to Territory Resources N.L. and a further upgrading of the plant occurred in 1985, followed by further production from three of the six lodes (approximately 5,000t of ore with grades in the range 0.3 - 0.8% Sn). Underground ore reserves in 1985 in probable and possible categories stood at some 360,000t and 375,000t of 1.5% Sn and 1.3% Sn respectively while an open-cut reserve of 400,000t of 0.4% Sn was indicated. The NTDME Mine Data Sheet for the mine is provided in Appendix 1 (Item 1). Part of one current Mineral Claim (MCN) appears to lie within the licence area. Small-scale production also has occurred at the Mavis Tin Mine to the near west of the northwest corner of the licence area (3.5t of concentrates). PREVIOUS GEOLOGICAL STUDIES AND EXPLORATION ACTIVITIES The central part of the Pine Creek Inlier has been the focus of many geological studies by Commonwealth and Territory government agencies and of substantial mineral exploration in recent years. The latter activities have occurred mainly in the late 1980s and early 1990s and have been concentrated upon geochemical sampling (stream sediment and soil principally), being directed towards the search for one or more of gold, base-metals and uranium. Gold exploration has been the most recent. Small-scale production of tin has occurred from small mines near the licence area in past years, notably from Mount Wells. Significant aspects of the past government work are: work by the Aerial, Geological and Geophysical Survey of the Northern Australia (ASSSNA) at the McKinlay Gold Mine : Hossfeld (1940) core drilling by Mines Branch of the Department of the Northern Territory at the McKinlay Gold Mine: Newton (1974) 1:63 360 scale geological and geophysical mapping by the BMR in the 1950s and 1960s: eg Goodeve (1966) 1:00 000 scale geological mapping by the BMR in the 1980s: Stuart-Smith and others (1986) detailed geological and metallogenic studies by the BMR of the Cullen Mineral Field: Stuart Smith and others (1993) metallogenic mapping by the NTGS of the Pine Creek 1:250 000 mapsheet area: Ahmad and others (1994) Geological and geophysical plans provided in this report are based on BMR publications as listed above eg Figures 8 and 9. Detailed mineral exploration has been undertaken principally by; Billiton Australia: EL 6445 (Hardies South), Northern Gold NL for Knave Pty Ltd EL 6189. Billiton Australia ((Mackay (1991, 1992) - see also Figures 10 and 11)) utilised both geochemistry (mainly stream-sediment sampling) and geophysics in its exploration program on EL 6443. Detailed high-quality aeromagnetic data were obtained and interpreted by the company as the product of a multi-client airborne survey flown by Aerodata in 1989. The company also reprocessed and interpreted earlier BMR aeromagnetic data. Ground magnetometry on one grid also was undertaken. Rock sampling was utilised for follow-up work on low-order stream-sediment anomalies. Results were discouraging with the principal conclusions being: anomalous stream-sediment values (to 26.9 ppb) have their sources outside EL 6443 (and outside EL 8055) within the northern part of the Mount Wells Mining Centre magnetic features are due to lithologic variation only (varying magnetite content) with no indications existing of sulphidic (pyrrhotitic) horizons most quartz veins are non-sulphidic, small and scattered, with no concentration in stockworks or shear zones; gold contents are insignificant Northern Gold NL ((Partington (1989); Stokes (1991) - see also Figures 10 and 11) carried out a substantial exploration program, involving stream-sediment, soil and rock-chip sampling and interpretation of aeromagnetic data (from 1989 Aerodata multi-client survey). Results were discouraging with the principal conclusions being: stream-sediment sampling (279 samples) identified two anomalous zones associated with quartz stockwork and/or vein systems within shear zones follow-up soil sampling (183 and 108 samples respectively) produced only point-source anomalies associated with small quartz veins which are only spottily (randomly?) anomalous for gold; no width or strike continuity for gold anomalism exists in the veins (a peak value of 11.4 ppm was obtained in one isolated sample of gossanous quartz but virtually all others contained less than 1.0 ppm). The main conclusions which can be drawn from the previous exploration are: the rock units of the licence area have produced very limited evidence to date of their potential economic significance linear magnetic features within the Burrell Creek Formation may represent magnetite-bearing intervals in the metasediments hornfelsing of metasedimentary rocks has occurred as a consequence of proximity to the Prices Springs Granite quartz veins are mainly of the white (buck) type with only limited evidence for pyritisation most anomalous gold values are either single-sample or not confirmed by later sampling and not significantly greater than background ranges EXPLORATION CRITERIA The criteria being observed by NTGM in its exploration of the area are: principal focus upon subareas of non-outcrop given that past exploration activities have had a strong geochemical focus (soil and/or rock sampling) upon outcropping subareas with negative results delineation of structurally complex subareas using available detailed aeromagnetic data, satellite imagery and colour aerial photography determination of the areal extents of the Zamu Dolerite and upper units of the Frances Creek Group in the eastern and western parts of the licence area respectively evaluation of the significance, so far as mineral prospectivity is concerned, of large granitic intrusives to the near west and south of the licence area (and particularly the contact aureoles of these bodies) sampling of pyritic and graphitic rock units in the Burrell Creek Formation and in units of Frances Creek Group sampling of tourmalinised rocks, if present The principal aim of the exploration program in Year 2 will be to locate drilling targets in appropriate structural settings via a combination of detailed geological mapping, soil and/or rock sampling and ground magnetometry. Given the extensive cover of black soil within the licence area, the use of auger and/or RAB drilling to obtain representative samples is foreseen. WORK COMPLETED IN YEAR 1 OF TENURE The following activities were undertaken in Year 1: acquisition and digitising of colour aerial photography for the McKinlay River project area, which includes the licence area research of available geological and exploration-related data, mostly available in the open-file records of NTDME, in connection with compilation of the prospectus for Australian Gold Mines NL (AGM), the parent company of NTGM ; this work was carried out by Dr. G.R. Orridge of Geonorth Pty. Ltd., Darwin and submitted as the Independent Geologist's Report for the prospectus ((Orridge (1994)). The prospectus, which was issued in April 1994, subsequently was withdrawn in June 1994 title management by principals and agents of NTGM based in Perth, Melbourne and Darwin establishment of a Geographic Information System (GIS) with subsidiary databases to manage all data generated by NTGM for its NT titles; this work was carried out by Mr. R. Fernandez of Ekos Research (NT) Pty. Limited assessment of options to obtain existing geophysical data (principally the aeromagnetic type) and satellite imagery in digital format to allow image processing This work has extended into the early months of the second year of title and included an extension of the research activities with work by AJ Hosking of AJ Hosking and Associates Pty. Ltd. As a consequence of the failure of the public float of AGM, alternative sources of funding for NTGM's exploration program in the NT have been sought. EXPENDITURE STATEMENT FOR YEAR 1 $ Darwin Office - Consultants 6117 Tenement Costs 437 Aerial Photography 480 Data Acquisition and Compilation 255 Geological Consultants 4872 GIS Management 1407 Travel and Accommodation 1396 Administration Overheads 1752 $16,716 The expenditure incurred in Year 1 was less than the covenant. Accordingly an application for a Variation of Condition has been made. Three geological consultants were utilised for varying periods in connection with preparation of the Prospectus for AGM, title administration and advice re programs and budgets for the title. PROPOSED EXPLORATION PROGRAM AND BUDGET FOR YEAR 2 Given the generally disappointing nature of the results of past exploration activities within and/or immediately adjacent to the licence area, the exploration philosophy and program for Year 2 will be based upon the following key aspects: completion of a structural interpretation of the area using colour aerial photographs plus images prepared from digital Thematic Mapper and aeromagnetic data rock-chip, soil and ground magnetic traverses across prospects delineated by the structural interpretation with auger and/or RAB drilling as necessary to sample beneath black soil detailed geological mapping of the prospects (subject to outcrop limitations) Most emphasis will be placed upon: assessment of the prospectivity of soil-covered areas delineation of faults, shear zones and folds (particularly the surface traces of anticlinal hingelines) determination of the areal extents and prospectivities of the units of the Frances Creek Group and the Zamu Dolerite in the western and eastern portions respectively of the licence area delineation of magnetic units within the Burrell creek Formation and of any major discontinuities or aberrations associated with them assessments of graphitic - pyritic and tourmalinised rocks as potential hosts to mineralisation Expenditure is envisaged as follows: $ Geology - detailed mapping, supervision, data interpretation 3000 Geophysics - computer imaging of TM and aeromagnetic data, ground magnetic traversing 6000 Geochemistry - soft and rock-chip sampling (traverses), assaying 4000 Gridding 1000 Information Management (per GIS) 2000 Title Management 2000 18000 Overheads (10%) - Darwin and Perth offices 1800 Say $20,000 REFERENCES Ahmad, M., Wygralak, A.S., Ferenczi, P.A. and Bajwah, Z.U., 1993: Explanatory Notes and Mine Data Sheets, Pine Creek. Northern Territory Geological Survey, Metallogenic Map Series, Sheet 52-8. Bajwah, Z.U., 1994: Mineralogy and magnetic susceptibility of the Proterozoic granites, related to gold mineralisation, Pine Creek Geosyncline, Northern Territory, Australia. In The AusIMM 1994 Annual Conference, Darwin, Proceedings, 57 - 66. Crohn, P.W., 1968: The mines and mineral deposits of the Katherine - Darwin region. Bureau of Mineral Resources, Australia, Bulletin 82. Ferguson, J., 1980: Metamorphism in the Pine Creek Geosyncline and its bearing on stratigraphic correlations. In Ferguson, J. and Goleby, A.B., (Editors) Uranium in the Pine Creek Geosyncline. International Atomic Energy Agency, Vienna, 91-100. Goodeve, P.E., 1966: Darwin/Pine Creek contract aeromagnetic survey, Northern Territory 1963. Bureau of Mineral Resources, Australia, Record 1966/101 (unpublished). Hooper, A.D.L., 1969: Soils of the Adelaide - Alligator area. In Lands of the Adelaide - Alligator area, Northern Territory, CSIRO, Melbourne, Land Research Series, 25, 95 - 133. Hossfeld, P.S., 1940: The McKinlay Gold Mine, Pine Creek district. Aerial, Geological and Geophysical Survey of Northern Australia, Northern Territory, Report, 46. McGowan, R.J., 1989: The hydrogeology of the Pine Creek mining region. Power and Water Authority, Explanatory Notes for 1:250 000 scale map. Mackay, C.R., 1991: Exploration Licence 6445 - "Hardies South". Relinquishment report for the period ending 21st March, 1991 for Billiton Australia. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 91/226 (unpublished). Mackay, C.R., 1992: Exploration Licence 6445 - Hardies South. Final report for the period 22nd March 1989 to 12th February, 1992 for Billiton Australia. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 92/123 (unpublished). Milligan, I.M., 1990: Exploration Licence 4838 "Hardies", Mount Wells district, Northern Territory. Report on relinquishment for Hawk Nest Gold Pty. Limited. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 90/055 (unpublished). Needham, R.S., 1981: A tabulated presentation of metallic mine and prospect data for the Pine Creek Geosyncline. Bureau of Mineral Resources, Australia, Record, 1981/39 (unpublished). Needham, R.S., Stuart-Smith, P.G. and Page, R.W., 1988: Tectonic evolution of the Pine Creek Inlier, Northern Territory. Precambrian Research, 40/41, 543 - 564. Needham, R.S. and de Ross, G.J., 1990: Pine Creek Inlier - regional geology and mineralisation. In Hughes, F.E., (Editor), The AusIMM, Melbourne. Geology of the Mineral Deposits of Australia and Papua New Guinea, 727 - 737. Newton, A.W., 1974: The McKinlay Gold Mine NT, Results of diamond drilling. Northern Territory Geological Survey, Report, GS 74/17 (unpublished). Nicholson, P.M., and Eupene, G.S., 1984: Controls on gold mineralisation in the Pine Creek Inlier. In the AusIMM 1984 Annual Conference, Darwin, Proceedings, 377-396. Nicholson, P.M. and Eupene, G.S., 1990: Gold deposits of the Pine Creek Inlier. In Hughes, F.E. (Editor), Geology and Mineral Deposits of Australia and Papua New Guinea, The AusIMM, Melbourne, 739 - 742. Nicholson, P.M., Ormsby, W.R. and Farrar, L., 1994: A review of the structure and stratigraphy of the Pine Creek Geosyncline. In The AusIMM 1994 Annual Conference, Darwin, Proceedings, 1 - 9. Ormsby, W.R., Nicholson, P.M. and Butler, I.K., 1994: Gold and base metal mineralisation in the central Pine Creek Geosyncline. In The AusIMM 1994 Annual Conference, Darwin, Proceedings, 11-19. Orridge, G.R.,1944: Independent Geologist's Report for Australian Gold Mines N.L. Prospectus (withdrawn). Partington, G., 1989: Annual report for Exploration Licence 6189 for year ended 23 October, 1989. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 90/016 (unpublished). Price, L.A., 1993: Final report on exploration activities: Mineral Claims 1855, 1856, 2012, 2013, 2014, Compass Creek, 24/2/88 to 24/2/93 for Poseidon Exploration Limited. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 93/362 (unpublished). Stokes, M., 1991: Exploration Licence 6189. Final report to 21st October, 1991 for Knave Pty. Ltd. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 91/516 (unpublished). Story, R., 1969: Vegetation of the Adelaide - Alligator area. In Lands of the Adelaide - Alligator area, CSIRO, Melbourne, Land Research Series, 25, 114 - 130. Stuart-Smith, P.G., Needham, R.S., Page, R.W., and Wyborn, L.A.T., 1993: Geology and mineral deposits of the Cullen Mineral Field, Northern Territory. Australian Geological Survey Organisation, Bulletin 229. Stuart-Smith, P.G., Needham, R.S., Wallace, D.A., and Roarty, M.J., 1986: McKinlay River, Northern Territory, Bureau of Mineral Resources, Australia, 1:100 000 Map Commentary. Wall, R., 1990: Compass Creek, EL 6170, Northern Territory. First annual report for Newmont Australia Limited. Northern Territory Department of Mines and Energy, Open-File Company Report, CR 90/038 (unpublished). Walpole, B.P., Crohn, P.W., Dunn, P.R. and Randal, M.A., 1968: Geology of the Katherine - Darwin region. Bureau of Mineral Resources, Australia, Bulletin 82. Williams, M.A.J., Hooper, A.D.L., and Story, R., 1969: Land systems of the Adelaide - Alligator area. In Lands of the Adelaide - Alligator Area, CSIRO, Melbourne, Land Research Series, 25, 24 - 48. Wilson, B.A., Brocklehurst, P.S., Clark, M.J., and Dickinson, K.J.M., 1991: Vegetation Survey of the Northern Territory, 1:100 000 map. Conservation Commission of the Northern Territory, Darwin. Wygralak, A.S., 1983: The economic geology and mining history of the McKinlay River 1:100 000 sheet area, NT. Northern Territory Geological Survey, Report, GS 83/3 (unpublished). APPENDIX 1 NTGS MINE DATA SHEETS ?? A.J. Hosking & Associates Pty Ltd 11 A.J. Hosking & Associates Pty Ltd