نتایج جستجو برای: sphalerite concentrate

تعداد نتایج: 49537  

بهزادی, مهرداد , متولی, کامران , یزدی, محمد ,

Nodushan Zn-Pb deposit at the western margin of Urumieh-Dokhtar volcano-plutonic belt resulted from granitoid intrusion into Eocene dacitic to andesitic rocks. Pyrite, sphalerite, galena and chalcopyrite are the main sulfide minerals. The chemical composition of sphalerites and pyrites indicates two different type of sphalerite (high Fe types demonstrating chalcopyrite disease and low Fe type) ...

2008
Luca Bindi Tiziano Catelani Laura Chelazzi Paola Bonazzi

The crystal structure of the mineral lautite (copper arsenic sulfide), CuAsS, previously described as either centrosymmetric [Pnma; Marumo & Nowacki (1964 ▶). Schweiz. Miner. Petro. Mitt.44, 439-454] or noncentrosymmetric [Pna2(1); Craig & Stephenson (1965 ▶). Acta Cryst.19, 543-547], was reinvestigated by means of single-crystal X-ray diffraction. The centrosymmetric structural model reported ...

Journal: :Science 2006
Alexander M Kalsin Marcin Fialkowski Maciej Paszewski Stoyan K Smoukov Kyle J M Bishop Bartosz A Grzybowski

Self-assembly of charged, equally sized metal nanoparticles of two types (gold and silver) leads to the formation of large, sphalerite (diamond-like) crystals, in which each nanoparticle has four oppositely charged neighbors. Formation of these non-close-packed structures is a consequence of electrostatic effects specific to the nanoscale, where the thickness of the screening layer is commensur...

Journal: :The Journal of Cell Biology 2001
William A. Wells

icrotubule plus ends may control sites of cell polarity and cytokinesis in both animal and yeast cells, but the mechanisms behind this have remained obscure. have detected a protein complex in Schizosaccharomyces pombe that links the actin-and microtubule-based cytoskeletal systems. Its existence also suggests that microtubule plus ends polarize cells by targeting cell-polarity factors to the c...

ژورنال: علوم زمین 2018
Kamran Motevali Mehrdad Behzadi Mohammad Yazdi

Eocene magmatism with intermediate-acid tuffs and volcanic rocks, the host to the Nodoushan deposit in Yazd province, intruded by Oligocene early diorite and later granite plutonic rocks. The former involved in iron skarn (containing epidote and euhedral grossularite) to the north and northern part of the deposit, the latter contributed to fault-controlled Zn-Pb deposit. The structural features...

Bonyadi, , Forouzesh, ,

Angouran zinc and lead deposit is located about 135 km west of Zanjan city, in the northwest of the Sanandaj-Sirjan structural zone The results of this study indicate that the dolomitic alteration occurred in the carbonate hanging-wall and the presence of ankerite in the schist footwall. The main host of ore deposit is metamorphic carbonate. The Angouran dolomite is secondary and hydrothermal. ...

Journal: :Minerals 2023

The primary coexisting mineral with galena is sphalerite. Hence, it critical to selectively separate from sphalerite by flotation. In this work, thiourea and related derivatives as potential flotation collectors for separating were investigated. Thiourea its found be effective selective in batch studies of a single mineral, 1,1-diphenylthiourea (11DTA) emerging the best choice. Galena has super...

M. Karimi T. Hejrani Z. Sheikholeslami

Researchers have revealed many novel applications for plum and raisin products as functional natural bakery ingredients. Raisin and plum concentrate were incorporated into the bread formulation at different concentrations and their effects on the rheological, baking properties and shelf life of breads were evaluated. The results showed that the use of plum concentrate at 6% had the highest wate...

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