Welcome from the Chairs
SessionsA. Mineral Processing
B. Environmental Mineralogy
C. Mineral Deposits
D. Mineral Geochemistry and Geochronology
E. Chemistry and Crystallography of Mineralogical Materials
F. Nanominerals and Mineral Surfaces
G. Poster section
Instructions for Authors
Authors are encouraged to prepare a presentation in PowerPoint or similar software, to be displayed online along with the Manuscript. Slides, if available, will be displayed directly in the website using Sciforum.net's proprietary slides viewer. Slides can be prepared in exactly the same way as for any traditional conference where research results can be presented. Slides should be converted to the PDF format before submission so that our process can easily and automatically convert them for online displaying.
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Posters will be available on this conference website during and after the event. Like papers presented on the conference, participants will be able to ask questions and make comments about the posters. Posters that are submitted without paper will not be included in the proceedings of the conference.
List of accepted submissions (12)
|Nb-Ta-Ti oxides in topaz granites of the Geyer granite stock (Erzgebirge Mts., Germany)||Miloš René||Show|
Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals, W-bearing ixiolite) represent the most common host in high-F, high-P Li-mica granites and related rocks from the Geyersberg granite stock in the Krušné hory/Erzgebirge Mts. batholith. The Geyersberg granite stocks forms a pipe like granite stock composed of fine- to middle-grained, porphyritic to equigranular topaz- Li mica granites, containing up to 6 vol. % of topaz. Intrusive breccias on the NW range of the granite stock are composed of mica schist- and muscovite-gneiss fragments enclosed in fine-grained aplitic granite. Granites are partly greisenised, mainly along of steeply dipping NW-SE, and NE-SW trending faults. Quartz-Li-mica-topaz greisens are mineralised by cassiterite, arsenopyrite, wolframite and molybdenite. The high-F, high-P Li-mica Geyersberg granites, which represent the youngest granite intrusions in the Western and Middle Krušné Hory/Erzgebirge plutons, are highly fractionated S-type granites (ASI = 1.2–1.5) with Nb/Ta ratio = 0.74–1.12 and depletion in high-field-strength elements (HFS). Columbite group minerals occur usually as anhedral grains that display patchy zoning. These minerals are represented by columbite-(Fe) with Mn/(Mn+Fe) ratio ranging from 0.07 to 0.32. The rare Fe-rich W-bearing ixiolite occurs as small needle-like crystals. The ixiolite is Fe-rich with relatively low Mn/(Mn + Fe) and Ta/(Ta + Nb) values (0.10–0.15 and 0.06–0.20 respectively). Owing to the high W content (19.8–34.9 wt. % WO3, 0.11–0.20 apfu), the sum of Nb + Ta in the ixiolite does not exceed 0.43 apfu. The Ti content is 1.7–5.7 wt. % TiO2 and Sn content is relatively low (0.3–4.1 wt. % SnO2)
|Two-stage SART process: A feasible alternative for gold cyanidation plants with high zinc and copper contents||Humberto Estay Minghai Gim-Krumm Michelle Quilaqueo||Show|
The SART process (SP) has been successfully implemented in gold cyanidation plants to address issues associated with high cyanide-soluble copper content the ores. However, this process could produce a relatively low grade precipitate, descreasing the sale price, when gold plants have high zinc and copper content in their solutions. A potential option in this case would be use of a two-stage SART process (TSSP) to produce separate zinc and copper precipitates. The additional equipment involved with this process would increase the capital cost, thereby generating concerns about the optimal range of metal contents that could justify this option. This study presents a methodology to quantify the feasible range of Cu/Zn concentrations that would justify a two-stages SART process. The study is based on a thermodynamic model and a simple economic evaluation. Results show the TSSP is preferred when the Cu/Zn ratio ranges between 0.2 and 1.5 with copper concentration higher than 500 mg/L. The TSSP appears to be a viable option to consider for gold plants having concentrations of copper and zinc higher than 500 and 350 mg/L respectively.
|First zunyite-bearing lithocap in Greece: The case of Konos Hill Mo-Re-Cu-Au porphyry system.||Constantinos Mavrogonatos Panagiotis Voudouris Paul Spry Vasilios Melfos Stephan Klemme Jasper Berndt Robert Moritz Christos Kanellopoulos|