Translated Title

Mineralogical Characteristics of Dickite in Zijinshan (ZJS) Au-Cu Deposit

Translated Abstract

Dickite　is　a　type　of　clay　mineral　which　could　be　utilized　in　industries　such　as　papers,ceramics,paints,cosmetics　and　fillers.In　this　research,three　types　of　dickite　(transparent,translucent,and　opaque)　and　one　type　of　dickite　which　is　widely　found　in　open　pit　(leaching　dickite)　were　selected,and　their　mineralogical　characteristics　were　systematically　investigated　and　compared　by　using　Electron　Probe　Microanalysis　(EPMA),X-ray　diffraction　(XRD),Fourier　Transform　Infrared　spectroscopy　(FT-IR)　and　Field　Emission　Scanning　Electron　Microscope　(FESEM).Transparent　dickite　is　low　ordered　degree　and　poorly　crystallized　exhibited　by　XRD　and　FT-IR　analyses.The　order　degree　and　crystallinity　increase　with　the　transition　from　translucent　dickite　to　opaque　dickite.The　order　degree　could　be　interpreted　as　the　displacement　of　Al　vacancies,and　crystallinity　referred　to　crystallization　degree　that　could　be　used　to　describe　the　crystal　structure　of　dickite.The　order　degree　is　correlated　to　the　crystallinity,which　could　describe　the　crystal　structure　of　dickite.Opaque　dickite　has　the　best　developed　and　the　most　compacted　plates　with　the　maximum　size　of　5　μm　wide　crystal　revealed　by　FESEM　images.Leaching　dickite　with　layers　stack　to　each　other　pseudo-hexagonal;many　small　holes　in　them　and　some　edges　of　layers　are　dissolved　by　the　acid　liquid.Moreover,impurities　especially　the　FeO　contents　are　few　which　could　be　utilized　in　the　paper-coating　and　catalytic　industry.It　could　be　concluded　that　high　order　degree　of　dickite　such　as　opaque　and　leaching　dickite　are　easier　intercalated　with　other　materials　which　are　suitable　for　the　usage　in　metallic　nano-composites.According　to　the　mineralogical　characteristics　of　different　dickite,the　hypothesized　schemes　of　dickite　forming　is　established　which　helps　to　gain　a　clear　idea　of　the　origin　of　Au-Cu　deposit.

Translated Keyword

dickite
mineralogical characteristics
ZJS Cu-Au deposit

Classification

P57
TB32

Type

Project Name

Project No.

Access Number

WF:perioarticalkwxb201701002

Language

Chinese

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