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Location: 225 km E from Geraldton, Western Australia, Australia
Level 2, 1100 Hay StreetPerthWestern Australia, Australia6005
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The Gossan Valley deposit is around 7km south of Gossan Hill and presently comprises five separate mineralised areas, the main Gossan Valley lenses and four smaller areas, Grassi and Flying Hi, 1-2km to the south of Gossan Valley and Felix and Conteville, 0.5-1km to the north.Zinc and copper mineralisation are hosted in the GGF, chiefly in the GG4 and GG5 members, unlike Gossan Hill and Scuddles where zinc mineralisation occurs predominantly in GG6. Sphalerite and chalcopyrite have locally replaced massive magnetite in GG4 and GG5 although mineralised lenses are generally narrower than at Gossan Hill and Scuddles. Stringer chalcopyrite also occurs in GG1 and occasionally in the GV4 Member of the Gossan Valley Formation. Small lenses of sphalerite and chalcopyrite are also developed in GG6. The same style of mineralisation has been intersected at Felix approximately 500m to the north of Gossan Valley with massive magnetite locally replaced by sphalerite and chalcopyrite.A small resource has been defined at Conteville which is located to the north of Felix; mineralisation remains open in all directions and warrants further drilling. Flying Hi to the south of Grassi contains copper and zinc mineralisation which is hosted in the upper portion of the GG1 member.Post-mineralisation dolerite bodies and rhyolite dykes intrude and stope out portions of the mineralisation at Gossan Valley in a similar manner to Gossan Hill.Gossan Valley is hosted in the Golden Grove Formation. Similar to Gossan Hill, the mineralisation at the Gossan Valley deposit has locally replaced sub-massive to massive magnetite in what is traditionally seen as a chalcopyrite-dominant footwall for the Gossan Hill deposit. However, at Gossan Valley the mineralisation is a combination of sphalerite and chalcopyrite.At Gossan Valley, stringer chalcopyrite and pyrite also occur further in footwall sediments, and small lenses of sphalerite and chalcopyrite occur in the hangingwall to the main mineralised position. A number of post mineralisation dolerite intrusives crosscut the stratigraphy and mineralisation at the Gossan Valley Deposits in several generations and orientations. In turn, the dolerites are crosscut by later small rhyolite intrusions.The Gossan Valley deposits are made up of multiple lenses within a 3.4 kilometre portion of prospective stratigraphy, extending from Grassi in the south to Conteville in the north. Some of the lenses that make up the Gossan Valley and Grassi deposits are open down plunge. The Conteville deposit remains open down plunge.Gossan Valley mineralisation is hosted in Golden Grove Member 4 (GG4) of the Golden Grove Formation. The nature of mineralisation is considered to be strata bound. The style of mineralisation at Gossan Valley is similar in nature to that of Gossan Hill and comprises multiple steeply dipping zones. Each zone varies from 50m to 450m along strike, 40m to 400m down-dip and 3m to 10m in thickness.
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