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Please use this identifier to cite or link to this item: https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/80354
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dc.contributor.authorHarvey, Jen_US
dc.date.accessioned2015-08-10T22:02:41Z-
dc.date.issued2015en_US
dc.identifier.govdocCR2015-0256en_US
dc.identifier.urihttps://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/80354en_US
dc.description.abstractDuring the lease tenure, two drilling campaigns were conducted where 12 Aircore (517.5m), 43 RC (3036.5m) and 3 Diamond (285m) holes were drilled. Drill cuttings were submitted for XRF, HLS (heavy liquid separation), petrographic and biostratigraphic analysis. Regional studies in the area combined with historic occurrence data and information obtained from this and other exploration projects in the area have been used to develop a model for mineralisation for the region whereby manganese occurs as a matrix within the basal sediments of the Walker River Formation. Secondary alteration and tropical chemical weathering however has remobilised and removed much of the mineralisation replacing it with Fe oxides. The model and drilling suggests that the likelihood of locating economic quantities of manganese is very low. GEMCO will therefore not seek to renew these leases.en_US
dc.subject.classificationManganeseen_US
dc.subject.classificationPyrolusiteen_US
dc.subject.classificationCryptomelaneen_US
dc.subject.classificationGoethiteen_US
dc.subject.classificationLimoniteen_US
dc.subject.classificationExploration historyen_US
dc.subject.classificationDrillingen_US
dc.subject.classificationAircore drillingen_US
dc.subject.classificationDiamond drillingen_US
dc.subject.classificationStratigraphic drillingen_US
dc.subject.classificationBiostratigraphyen_US
dc.subject.classificationPetrographic analysisen_US
dc.subject.classificationDrill cuttings samplingen_US
dc.subject.classificationGeochemical explorationen_US
dc.subject.classificationGrab samplingen_US
dc.subject.classificationAssayingen_US
dc.subject.classificationAssay valueen_US
dc.title2015 Annual and final report GR148 EL 10182, EL 27249 20 April 2009 to 20 April 2015en_US
dc.relation.isatmap100Gove 6273en_US
dc.relation.isatmap100Arnhem 6173en_US
dc.relation.isatmap100Durabudboi 6172en_US
dc.relation.isatmap250Gove SD5304en_US
dc.relation.isatmap250Arnhem Bay SD5303en_US
dc.relation.isatgeolprovinceCarpentaria Basinen_US
dc.relation.isatgeolprovinceArnhem Inlieren_US
dc.description.stratnameWalker River Formationen_US
dc.description.drilling4 Diamonds holes for 407.1 m (EADD213, EADD228, EADD242, EADD264)en_US
dc.description.drilling12 Aircore holes for 517.5 m (EARC201 to EARC210, EARC223, EARC224)en_US
dc.description.drilling43 RC holes for 3,036.5 m (EARC212 to EARC219, EARC225, EARC226, EARC229, EARC230,EARC231, EARC234, EARC235, EARC236, EARC237, EARC239, EARC240, EARC241, EARC243 to EARC262, EARC265, EARC274, EARC275)en_US
dc.identifier.tenureEL10182en_US
dc.identifier.tenureEL27249en_US
dc.description.modifyhistory26/06/2015en_US
dc.description.modifyhistory06/08/2015en_US
dc.description.modifyhistory19/09/2017en_US
dc.contributor.holderGroote Eylandt Mining Companyen_US
dc.identifier.collectionnameMinerals Exploration Reports (MEX)en_US
dc.identifier.govdocprefixCR2015en_US
local.flag.notified1
Appears in Collections:Minerals Exploration Reports (MEX)

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