Results 31 to 40 of about 12,817 (165)

The Massif Central as a Centre of Roman Brass Production? New Geochemical Data of the So‐Called Hemmoor Buckets

Archaeometry, EarlyView.
ABSTRACT New analytical data of the so‐called Hemmoor buckets, a group of brass vessels from the Roman period of the 2nd to 3rd century ad that are widespread throughout central and eastern Europe, show considerable similarities with the polymetallic Cévennes ore deposits in south‐eastern France in terms of their geochemical characteristics and lead ...
Tobias B. Skowronek, Michael Bode, Norbert Hanel, Daniel Neumann, Moritz Jansen, Karl Schmeer   +5 more
wiley   +1 more source

Reconnaissance study of watershed and cave sediment sources discharging from a karst spring, Iowa

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Springs discharging from karst landscapes provide sustainable flows to natural ecosystems and support productive fish hatcheries but sediment discharging from springs threatens the long‐term sustainability of hatcheries. In this study, we conducted a reconnaissance study to evaluate watershed and cave sediment sources discharging to Siewers ...
Keith E. Schilling, Joseph Honings, Thomas Doyle, Calvin Wolter, David Peate   +4 more
wiley   +1 more source

Recepção de Ondas Eletromagneticas com Rádio Galena [PDF]

, 2014
Trabalho apresentado no 31º SEURS - Seminário de Extensão Universitária da Região Sul, realizado em Florianópolis, SC, no período de 04 a 07 de agosto de 2013 - Universidade Federal de Santa Catarina.O receptor galena é o mais simples dispositivo de ...
Andreolla, Clementina, Ruzza, Flavio
core  

Study of Galena Ore Powder Sintering and Its Microstructure

Metals
Galena is a natural mineral enriched with lead sulfide (PbS). It typically forms in hydrothermal veins associated with igneous rocks and can also occur as a gangue mineral in other ore deposits.
Bety S. Al-Saqarat, Ahmed Al-Mobydeen, Yousef Al-Dalahmeh, Ahmed N. AL-Masri, Abdelmnim M. Altwaiq, Imad Hamadneh, Qusay Abu-Afifeh, Mutaz M. Zoubi, Muayad Esaifan, Iessa Sabbe Moosa, Ehab AlShamaileh   +10 more
doaj   +1 more source

Contrasting Climate‐Associated Shifts in Male and Female Body Size Reduce Sexual Size Dimorphism in the Sagebrush Lizard (Sceloporus graciosus)

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
Body size changed differently between male and female sagebrush lizards over time, with females increasing more than males. Lizards also showed greater increases in body size in populations that experienced warmer and wetter climatic shifts. ABSTRACT Changes in body size are among the most frequently documented biological responses to recent climate ...
Madison J. McCann, Matthew S. Lattanzio
wiley   +1 more source

Release Behavior of Lead and Mineral Transformation Characteristics of Micro-Scale Galena in Different Media

Yankuang ceshi
The weathering behavior of galena, as the main lead ore, directly affects the migration and fate of heavy metal Pb in the environment. Weathering environment and time both affect the weathering products of galena.
Binbin CHU, Shengfeng MA, Yuan ZENG, Qing SUN, Wenbo ZHAO   +4 more
doaj   +1 more source

Bioleaching of pollymetallic sulphide concentrate using thermophilic bacteria [PDF]

Hemijska Industrija, 2014
An extreme thermophilic, iron-sulphur oxidising bacterial culture was isolated and adapted to tolerate high metal and solids concentrations at 70°C.
Vuković Milovan, Štrbac Nada, Sokić Miroslav, Grekulović Vesna, Cvetkovski Vladimir   +4 more
doaj   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, Volume 61, Issue 9, Page 2940-2957, September 2026.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Mineralizacion de Pb-Zn en sedimentitas cretaceas de la cordillera Oriental. Región de Montenegro (Santander)

Boletín Geológico, 1990
La región objeto de este estudio se localiza al extremo sur central del Macizo de Santander, cordillera Oriental de Colombia. En una secuencia de sedimentitas del Cretáceo inferior y en posición concordante con la dirección de los estratos, se encuentra
Hernando Mendoza Forero
doaj   +1 more source

Why Does the Broken Hill Deposit Sit in Resistive Crust? Magnetotelluric Evidence for Metamorphic Decoupling of a World‐Class Mineral System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The spatial association between electrical conductors and ore deposits underpins the widespread use of magnetotellurics (MT) in mineral exploration, yet not all mineral systems preserve a diagnostic conductive signature. Here, we present a high‐resolution MT study of the region hosting the world‐class Broken Hill Pb‐Zn‐Ag deposit (NSW ...
Yahya AlQahtani, Sinan Özaydın, Vasileios Chatzaras, Patrice F. Rey, Tiago Passos   +4 more
wiley   +1 more source