SE
Abstract. Discovering ore deposits is becoming increasingly difficult, and this is particularly true in areas of glaciated terrains. As a potential exploration tool for such terrains, we test the vectoring capacities of trace element and sulfur isotope characteristics of pyrite, combined with quantitative statistical methods of whole-rock geochemical …
اقرأ أكثر
Journal of Ma terials Chemistry A
Nickel cobaltite (NiCo 2O4) possesses better electrochemical activity and at least two orders of magnitude higher electrical conductivity than pure Co 3O4 and NiO, which can exhibit an outstanding specific capacitance of 1400 F g-1 at a sweep rate of 25 mV s-1 in a 1 M NaOH solution within a potential window of 0.04 to 0.52 V as
اقرأ أكثر
Cobaltite Value, Price, and Jewelry Information
A tufa cast silver Navajo naja with three cobaltite cabs, with arrow hallmark for Kevin Yazzie (Dine, 20th century). Photo courtesy of liveauctioneers and Cowan's Auctions. (Cropped to show detail). With a hardness of 5.5 and perfect cleavage, cobaltites are suitable for jewelry with protective settings.. Although their metallic luster is their principal …
اقرأ أكثر
The occurrence of cobalt and implications for genesis of the …
Three independent cobalt minerals are identified (cobaltite, carrollite, and linnaeite). The EPMA results further reveal two different occurrences of cobalt (independent cobalt minerals and isomorphous substitution Co in sulfides) in the Pusangguo deposit. Compared with chalcopyrite (mean Co content = 0.06 ± 0.06 wt.%, 1σ, n = 142) and …
اقرأ أكثر
Bioleaching of arsenic-rich cobalt mineral resources
Cobaltite was identified with both XRD and SEM-EDX as the major mineral within which cobalt and arsenic were deported (Supplementary Fig. S1). Although the Iron Mask ore contained ~13 wt% iron, no primary Fe-rich phase was identified with XRD, while SEM-EDX studies revealed that iron was associated with silicates and cobaltite.
اقرأ أكثر
Enhanced electrochemical performance of nanoplate nickel cobaltite
Nickel cobaltite (NiCo 2 O 4) has excellent redox activity, natural abundance, low cost, environmentally benign characteristics, and nontoxicity. 37,38 Thus, the fabrication of nanoplate-structured NiCo 2 O 4 using a simple and novel method to enhance its electrochemical performance is the focus of this research.
اقرأ أكثر
Cobaltite | Sulfide Ore, Nickel-Copper & Silver
Cobaltite, a cobalt sulfoarsenide mineral in which iron commonly replaces part of the cobalt [ (Co,Fe)AsS], that occurs in high-temperature deposits. Notable occurrences are at …
اقرأ أكثر
Construction stops on Idaho cobalt mine about to ship ore
The cobaltite separation from chalcopyrite is very difficult. And sending a cobaltite concentrate all the way to Brazil never made sense to me. So, I think the cobalt price and these challenges ...
اقرأ أكثر
Synthesis and characterization of manganese-, nickel-, and
Mn-rich transition metal (Mn, Ni, Co) carbonate precursor was precipitated as the precursor for Li- and Mn-enriched composite material used as advanced cathode for lithium-ion battery. The pH zone that favors carbonate precipitation reactions for transition metals (Co, Ni, Mn) was predicted by taking into account the chemical equilibriums …
اقرأ أكثر
Bioleaching of cobalt from magnetite-rich cobaltite-bearing …
Abstract. Cobaltite (CoAsS) is a strategically important mineral. This work investigated the bioleaching of cobaltite-bearing magnetite-rich ore. The bioleaching of cobaltite was carried out with mixed mesophilic and moderately thermophilic cultures at 4, 8, and 12% pulp densities in shake flasks. The bioleaching with mesophiles at 8% pulp ...
اقرأ أكثر
A Facile Preparation of Zinc Cobaltite (ZnCo2O4
3.1 Structural Analysis. The XRD pattern of the ZnCo 2 O 4 NSs was shown in Fig. 2a. The characteristic diffraction peaks of (111), (220), (311), (222), (400), (422), (511), (440), (620) and (533) are well indexed to the cubic spinel ZnCo 2 O 4 nanostructure (JCPDS # 23-1390). The crystallographic structure of the spinel cobaltite was shown in …
اقرأ أكثر
DF2014:Cobaltite
Cobaltite is an ore of cobalt, a metal not modeled in Dwarf Fortress. Interestingly, the name derives from the word kobold. A chunk of cobaltite rock. A piece of Cobaltite. This article or section has been rated D for Dwarf. It may include witty humour, not-so-witty humour, bad humour, in-jokes, pop culture references, and references to the ...
اقرأ أكثر
Journal of Ma terials Chemistry A
Nickel cobaltite (NiCo 2O4) possesses better electrochemical activity and at least two orders of magnitude higher electrical conductivity than pure Co 3O4 and NiO, which can …
اقرأ أكثر
X-Ray Spectroscopy of Cobaltites | SpringerLink
In this review, we will discuss cobaltites, i.e., oxide compounds of cobalt, in which cobalt is in an oxidation state (charge state) of 3+. In these compounds, Co 3+ …
اقرأ أكثر
Journal of Materials Chemistry A
Direct application of cobaltite-based perovskite cathodes on the yttria-stabilized zirconia electrolyte for intermediate temperature solid oxide fuel cells† Kongfa Chen,‡ab Na Li,‡bc Na Ai,b Meng Li,d Yi Cheng,b William D. A. Rickard,e Jian Lid and San Ping Jiang*b In thiscommunication, cobaltite-based perovskite (CBP) cathodes are
اقرأ أكثر
Cobaltite Definition & Meaning
cobaltite: [noun] a grayish to silver-white mineral consisting of a sulfur arsenide of cobalt also containing iron and sometimes nickel and used in pigments.
اقرأ أكثر
Comparative Studies of Frustrated Cobaltites YBaCo
Abstract Comparative experimental studies of the structural and elastic characteristics of the YBaCo4O7 + x and DyBaCo4O7 + x (x = 0, 0.1, 0.2) cobaltite systems reveal their different behavior depending on excess oxygen content x. A relation between structural parameters aav = (a + b/ $$sqrt 3 $$ )/2 and c and index x is determined, and …
اقرأ أكثر
Atomically engineered cobaltite layers for robust …
This indicates that the long-range ferromagnetism persists in atomically thin LCO SLs. For a D 10 L 10 SL, both Mr and HC increase to ~32 emu/cm 3 and ~2 kOe, respectively. The increase in the number of magnetic parameters can be attributed to the thicker LCO layers, which can lead to the long-range spin ordering.
اقرأ أكثر
About: Cobaltite
Cobaltite is a sulfide mineral composed of cobalt, arsenic, and sulfur, CoAsS. Its impurities may contain up to 10% iron and variable amounts of nickel. Structurally, it resembles pyrite (FeS2) with one of the sulfur atoms replaced by an arsenic atom. Although rare, it is mined as a significant source of the strategically important metal cobalt. Secondary weathering …
اقرأ أكثر
X-Ray Spectroscopy of Cobaltites | SpringerLink
Cobaltite DyBaCo 2 O 5.5 was studied in using the method of X-ray magnetic circular dichroism. Figure 18 shows the XMCD spectra measured along the a and c axes of DyBaCo 2 O 5.5 for the ferromagnetic phase (245 K), the insulator phase in the paramagnetic state (315 K), and the metallic paramagnetic phase (345 K). It is shown …
اقرأ أكثر
Cobaltite: The mineral cobaltite information and pictures
Cobaltite is an important ore of the element cobalt. It forms very interesting and unusual crystals rarely seen in the mineral kingdom, especially the icosahedral type. The name of Cobaltite, and its namesake cobalt, is derived from the German equivalent of the leprechaun or goblin, called "kobold". Legend has it that the metal cobalt was ...
اقرأ أكثر
Cobaltite Mineral Data
General Cobaltite Information : Chemical Formula: CoAsS : Composition: Molecular Weight = 165.92 gm Cobalt 35.52 % Co Arsenic 45.16 % As Sulfur 19.33 % S _____ 100.00 % : Empirical Formula: CoAsS : Environment: High temperature hydrotherma deposits and contact metamorphic rocks. ...
اقرأ أكثر
Cobalt doped graphitic carbon nitride as an effective catalyst …
To clarify the chemical composition of Co–CN, XPS survey was introduced. In the survey spectrum of fresh Co–CN (), peaks of C, N, Co and inevitable O were observed.In C 1s spectrum of fresh Co–CN (), peaks at 284.8 and 288.3 eV were assigned to C–C and N–C N in triazine ring unites of g-C 3 N 4, respectively. 34 The N 1s spectrum of fresh …
اقرأ أكثر
Electrochemical performance of plate-like zinc cobaltite …
The plate-like zinc cobaltite nanocrystalline material displayed a maximum coulombic efficiency of 78% and a maximum specific capacitance of 812 F/g, and it retained 88% of its capacitance after 5100 cycles. Such electrochemical performance may qualify the plate-like zinc cobaltite nanocrystalline material as a potential electroactive material ...
اقرأ أكثر
Cobaltite
Jun 5 2014. Cobaltite is a sulfosalt mineral, containing sulfur, arsenic, and cobalt. It was discovered as early as 1832 from mines in the Cobalt district, Ontario, Canada. The mineral was named after the German word Kobold, which means "underground spirit" or "goblin", representing its elemental composition.
اقرأ أكثر
Frontiers | Mineralogy of Nickel and Cobalt Minerals in …
Located in the East Kunlun Orogen, China, the Xiarihamu magmatic nickel–cobalt sulfide deposit is the country's second largest deposit of this type. It was formed in special early Paleozoic with low copper grade (0.14 wt%) compared with other deposits of the same type. The mineralogy of nickel and cobalt minerals, which are direct …
اقرأ أكثر
Cobaltite | Sulfide Ore, Nickel-Copper & Silver | Britannica
cobaltite, a cobalt sulfoarsenide mineral in which iron commonly replaces part of the cobalt [(Co,Fe)AsS], that occurs in high-temperature deposits. Notable occurrences are at Daşkäsän, in the lesser Caucasus, Azerbaijan; Tunaberg, Swed.; and Rājasthān, India. Cobaltite, like its relatives gersdorffite and ullmannite, crystallizes in the isometric system …
اقرأ أكثر
| e-Rocks Mineral Auctions
Cobaltite With Siderite. Broken Hill, New South Wales, Australia. Small miniature (3-4.5 cm) $ You are the highest bidder. You have been outbid. Proxy bid set $ Delayed bid of $ Delayed Bid is Outbid. Sold. Bid. Watch. bids (reserve not met) (reserve met) LGM979690. Cobaltite. Håkansboda, Lindesberg, Örebro County, Sweden.
اقرأ أكثر
Nano spinel cobaltites and their catalytic and …
As-synthesized spinel cobaltite nanoparticles (NPs) were characterized by Fourier-transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD), X-ray …
اقرأ أكثر