Results 91 to 100 of about 15,224 (271)

Dispersion of antimony from oxidizing ore deposits [PDF]

open access: yes, 2017
The solubilities of brandholzite, [Mg(H2O)6][Sb(OH)6]2, and bottinoite, [Ni(H2O)6][Sb(OH)6]2, at 25 °C in water have been measured. Solubilities are 1.95(4) × 10-3 and 3.42(11) × 10-4 mol dm-3, respectively.
Diemar, Glen A.   +3 more
core  

Pop-down tectonics, fluid channelling and ore deposits within ancient hot orogens

open access: yes, 2014
International audienceMany Archaean and Paleoproterozoic deformation zones, often rich in ore resources, show particular structural patterns in particularmarked by regional vertical stretch.
Boulvais, Philippe   +3 more
core   +3 more sources

Tudor England and Stewart Scotland Through Spanish Eyes: A Complete Transcription and Translation of Pedro de Ayala's Letter of 1498 to King Ferdinand of Castile and Queen Isabella of Aragon

open access: yesRenaissance Studies, EarlyView.
Abstract Pedro de Ayala served as a diplomat for King Ferdinand II of Aragon and Queen Isabella I of Castile at the courts of Henry VII, King of England, and James IV, King of Scots. In July 1498, he wrote a letter, partly in cipher, to report to his king and queen on such matters as Spain's interests in international diplomacy; the characters and ...
Adrian William Jaime   +2 more
wiley   +1 more source

A short historical overview on the use of lead [PDF]

open access: yes, 2018
This historical introduction to the use of lead in art and technology was originally written to give context to lead conservation studies by the authors.
Adriaens, Mieke   +2 more
core   +1 more source

Implementing the Flipped Classroom Model in the Teaching of History [PDF]

open access: yes, 2017
This study investigated the effectiveness in implementing the Flipped Classroom model in teaching History and to identify the students\u27 perceptions using this approach towards their learning.
Abdul Latif, Siti Waznah   +6 more
core   +3 more sources

Sound offset responses become highly informative in the auditory cortex

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Using large datasets of neural responses to diverse sounds recorded across four stages of the mouse auditory system (depicted and colour‐coded on the left), offset responses occurring after the termination of each sound (time window indicated by the orange shaded area superimposed with activity traces) were characterized and it ...
Charly Lamothe   +3 more
wiley   +1 more source

A Summary of gold fineness values from Alaska placer deposits [PDF]

open access: yes, 1981
This report is the first in a series of publications by the Mineral Industry Research Laboratory and the Alaska Division of Geological and Geophysical Surveys under a special appropriation by the Alaska State Legislature to the School of Mineral Industry
Hawkins, D.B., Metz, P.A.
core  

Metallogeny of precious and base metal mineralization in the Murchison Greenstone Belt, South Africa: indications from U-Pb and Pb-Pb geochronology [PDF]

open access: yes, 2012
International audienceThe 3.09 to 2.97 Ga Murchison Greenstone Belt is an important metallotect in the northern Kaapvaal Craton (South Africa), hosting several precious and base metal deposits.
Boulvais, Philippe   +4 more
core   +4 more sources

Mechanism and Application of High-efficiency Collector MY-1 for Lead-zinc Separation

open access: yesKuangchan zonghe liyong
[Objective]The main useful minerals in a mine (Guangxi) are jamesonite and marmatite. When using conventional collector, lime is needed to separate lead from zinc at high alkaline condition, and the selectivity of agent is poor in the presence of high ...
Xiong CHEN   +4 more
doaj   +1 more source

New orogenic type gold occurrences in the Uyanga ore knot (Central Mongolia)

open access: yesMongolian Geoscientist, 2018
The Uyanga ore knot district of the Khangay metallogenic zone are hosted by the lower-middle Devonian volcanogenic-sedimentary Erdenetsogt formation.
Ariunbileg Sodov   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy