Results 41 to 50 of about 31,485 (279)
Phase relations of arsenian pyrite and arsenopyrite [PDF]
, 2021 Arsenian pyrite containing above 1 wt% As plays a crucial role in deposition and deportment of Au and other chalcophile elements. The importance of arsenian pyrite led to theoretical and experimental studies that examined properties and genesis of the ...
Large, Ross R. +7 more
core +3 more sources
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2023 Two examples of contact twins in pyrite from Peru are described. The first one, from Pasto Bueno ore deposit, shows the pyritohedron {120} as principal form, accompanied by the {111} octahedron and {100} cube as secondary forms, giving a lenticular aspect.
Yves Moëlo +2 more
openaire +3 more sources
The flotation of pyrite using xanthate collecters [PDF]
, 1986 Bibliography: leaves 117-123.The flotation properties of pyrite were found to be significantly influenced by variations in the pH. In acidic solutions the pyrite floatability is very high, and recoveries of 95% could be achieved using only a frother.
Dimou, Anna
core
Comparison on the leaching kinetics of chalcocite and pyrite with or without bacteria [PDF]
, 2010 The acid leaching, ferric leaching, and bioleaching of chalcocite and pyrite minerals were conducted in two sets of 3L stirred reactors The dissolution rates of copper and iron were correlated with leaching conditions In the acid leaching process, the ...
Wu Biao +6 more
core +1 more source
Two‐Dimensional Quaternary Alloys of (RuMoVNb)Se2 for Superior Hydrogen Evolution Reaction Catalysis
Advanced Science, EarlyView.Composition‐tuned (RuMoVNb)Se2 quaternary alloy nanosheets are synthesized via colloidal reactions. Incorporation of Ru into (MoVNb)Se2 ternary alloys results in more metallic electronic structures and significantly enhances their electrocatalytic activity for the hydrogen evolution reaction (HER) under alkaline, acidic, and neutral conditions.
Junaid Ihsan +11 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano +3 more
wiley +1 more source
International Journal of Coal Science & TechnologyTextural analysis of pyrite has been carried out in the lignites of Kachchh Basin to decipher its micro-morphological character. The study entails the intermediate stage and authigenic sunflower structured pyrite.
Ashish Kumar Singh +3 more
doaj +1 more source
Energy GeoscienceShales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing, China are characterized by high organic matter content and a significant presence of pyrite development.
Xiao Cai +8 more
doaj +1 more source
Produção de sulfato ferroso a partir da pirita: desenvolvimento sustentável [PDF]
, 2008 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Esta tese de doutorado objetivou o estudo da pirita contida nos rejeitos piritosos da região sul catarinense, considerados os ...
Peterson, Michael
core
(Table 1) Pyrite microtextures and stable isotope values of pyrite from ODP Holes 160-967C and 160-969E [PDF]
, 1999 (Table 1) Pyrite microtextures and stable isotope values of pyrite from ODP Holes 160-967C and 160 ...
Böttcher, Michael Ernst +7 more
core +1 more source