A New Family of Homo- and Heterometallic Manganese Complexes at High Oxidation States Derived from the Oxidation of MnII with CeIV: Syntheses, Structures, and Magnetic Properties

2011 ◽  
Vol 2011 (32) ◽  
pp. 5043-5053 ◽  
Author(s):  
Cheng-Bing Ma ◽  
Ming-Qiang Hu ◽  
Hui Chen ◽  
Chang-Neng Chen ◽  
Qiu-Tian Liu
Keyword(s):  
Magnetic Properties ◽  
Oxidation States ◽  
Manganese Complexes ◽  
New Family ◽  
High Oxidation

New dinuclear cobalt(II) octaaza macrocyclic complexes with high oxidation redox potentials: Their crystal structure and unusual magnetic properties

2008 ◽  
Vol 361 (9-10) ◽  
pp. 2747-2758 ◽  
Author(s):  
Jayanthi Narayanan ◽  
Alejandro Solano-Peralta ◽  
Víctor Manuel Ugalde-Saldivar ◽  
Roberto Escudero ◽  
Herbert Höpfl ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Macrocyclic Complexes ◽  
Redox Potentials ◽  
High Oxidation

Synthesis, structures, adsorption behaviour and magnetic properties of a new family of polynuclear iron clusters

2010 ◽  
Vol 39 (20) ◽  
pp. 4893 ◽  
Author(s):  
Yan-Li Miao ◽  
Jun-Liang Liu ◽  
Zhuo-Jia Lin ◽  
Yong-Cong Ou ◽  
Ji-Dong Leng ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Adsorption Behaviour ◽  
Iron Clusters ◽  
New Family

Synthesis, structure and magnetic properties of a new family of chiral metal(II) citramalates

2007 ◽  
Vol 360 (3) ◽  
pp. 1111-1120 ◽  
Author(s):  
Adel Beghidja ◽  
Richard Welter ◽  
Pierre Rabu ◽  
Guillaume Rogez
Keyword(s):  
Magnetic Properties ◽  
New Family

Anion coordination selective [Mn3] and [Mn4] assemblies: synthesis, structural diversity, magnetic properties and catechol oxidase activity

2015 ◽  
Vol 44 (26) ◽  
pp. 11741-11754 ◽  
Author(s):  
Moumita Pait ◽  
Michael Shatruk ◽  
Debashis Ray
Keyword(s):  
Magnetic Properties ◽  
Magnetic Property ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Structural Diversity ◽  
Manganese Complexes ◽  
Catechol Oxidase ◽  
Oxidation Study ◽  
Anion Coordination ◽  
Catechol Oxidation

The present manuscript reports the detail synthesis, characterization, magnetic property and catechol oxidation study of a family of mixed valent (MnIIMnIII) and trivalent (MnIII) manganese complexes from a Schiff base ligand.

Porphyry Cu-Au±Mo mineralization hosted by potassic igneous rocks: implications from the giant Peschanka porphyry deposit, Baimka Trend (North East Siberia, Russia)

2021 ◽  
pp. SP513-2020-178
Author(s):  
Andrey F. Chitalin ◽  
Ivan A. Baksheev ◽  
Yurii N. Nikolaev ◽  
Georgy T. Djedjeya ◽  
Yuliya N. Khabibullina ◽  
...  
Keyword(s):  
Tectonic Setting ◽  
Igneous Rocks ◽  
Oxidation States ◽  
Island Arcs ◽  
Porphyry Cu ◽  
North East ◽  
Average Grade ◽  
High K ◽  
High Oxidation ◽  
Other World

AbstractPorphyry Cu-Au±Mo mineralization at Peschanka is hosted by monzodiorite and monzonite intrusions with high-K calc-alkaline to shoshonitic compositions and dated at about 144.1±1.5 Ma, using U/Pb zircon ages. The Cretaceous intrusions are emplaced in a melange of Cretaceous island arcs, a tectonic setting comparable to other world-class porphyry Cu-Au deposits, such as Oyu Tolgoi, Mongolia, and Pebble, Alaska.Abundant primary magnetite contents of the Peschanka intrusions, as well as numerous gypsum and anhydrite veins, reflect the high oxidation states of their parental magmas. This mineralogical interpretation is confirmed by high whole-rock Fe2O3/FeO ratios and high V/Sc ratios of the rocks of up to 1.27 and up to 21.9, respectively. The whole-rock Eu/Eu& ratios of the Peschanka intrusions are ≥1 which is also typical for potassic igneous rocks with high oxidation states. Abundant amphibole and biotite phenocrysts of the intrusions as well as their high whole-rock Sr/Y ratios of up to 225 document significantly high H2O contents of the high-K magmas.Peschanka contains a resource of >9.5 Mt of copper at an average grade of 0.43 wt% and 16.5 Moz of gold at a high average grade of 0.23 g/t and, thus, representing one of the largest undeveloped greenfield copper projects worldwide. The vicinity of Peschanka still offers significant brownfields exploration potential.The hypogene vein-related and disseminated Cu-Au±Mo sulfide mineralization at Peschanka is structurally-controlled by significant NE-trending strike-slips that acted as the conduits for the hydrothermal fluids. The central part of the orebody consists of high-grade N-S trending sheeted quartz-bornite veining with unusually high vein densities. The highest Cu and Au grades are directly correlated with high vein densities.Peschanka is defined by distinct hydrothermal alteration zones including potassic, phyllic, propylitic and argillic assemblages, but a distinct lack of advanced argillic alteration. The mineralization itself is also zoned ranging from a central Mo-Cpy-Bn sulfide assemblage to a peripheral Py-Mt-dominated zone (“pyrite-shell”). Late-stage polymetallic assemblages overprint and surround the main stockwork zone.

Sign in / Sign up

Export Citation Format

Share Document