The second more affordable option is to crush the rock and pan the powder for the gold pieces If the gold is distributed through the quartz in a balanced and beautiful way it can be worth a lot of money High end jewelers can turn the gold and quartz integration into a gemstone for an exquisite natural and expensive piece of jewelry
·Based on ore mineralogy derived from XRD and SEM results the quartz vein associated ore minerals in the Hamash district include chalcopyrite pyrite hematite goethite bornite covellite and gold
·The stage 3a veins and host rock alteration are characterized by abundant muscovite and quartz while the stage 3b veins and alteration consist of quartz pyrophyllite alunite and dickite Enargite and luzonite are the dominant sulfide minerals in stage 4 which are either disseminated in silicified host rock or within wide quartz veins
·Nature of ore Ore may be present in quartz veins and or adjacent sulfidized wall rock Gold is present as free grains in quartz as blebs attached to wall rock ribbons and in veinlets cutting sulfide grains Individual veins are 1 to 10 m wide discrete fissure fillings that have strike lengths of less than 100 m
·This crystallization process is what has historically led to the formation of rich gold ore inside quartz veins igniting gold rushes and driving the quest for these precious deposits Gold being much denser than rock settles at the bottom In the 1800s panning was one of the simplest forms of placer mining Hard rock mining involved
·The early period is typified by the Daping mesozonal quartz vein gold deposit formed during crustal thickening with a sericite Ar Ar age of 46 42 Ma Yang et al 2021 The auriferous sulfide quartz veins hosted in Late Proterozoic diorite consist of native gold pyrite galena chalcopyrite and scheelite Zhang et al 2018
Gold bearing orogenic quartz vein characteristics a Brecciated/deformed quartz vein first generation which is paralel to the foliation of the mica schist N 300ºE/60º b highly oxidized
·The Abu Gaharish mineralization comprises Au rich NNE trending quartz veins and their surrounding shear zone is found hosted within a Neoproterozoic Sn W bearing monzogranite pluton and intersects the metavolcano sedimentary assemblage at its eastern contact The ore mineralogy consists of pyrite galena chalcopyrite sphalerite and gold with
·In these mineralization is dominated by free gold in quartz carbonate veins and disseminated sulfide minerals mainly pyrite As rich pyrite and pyrrhotite in the hydrothermally altered surrounding rocks For the petrographic studies 25 polished thin sections of selected rock samples from the VQZ ore body level 15 as well as from drill
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