Results 71 to 80 of about 7,479 (200)

Preparation and Identification of Heavy Minerals for Archaeometrical Studies: Villa of Fiumana (FC), Italy

open access: yesJournal of Raman Spectroscopy, Volume 56, Issue 11, Page 1302-1314, November 2025.
This paper presents a new protocol for the laboratory preparation of archaeological samples. Ceramics that have been hand‐crafted using different sediments as raw materials were collected in a Roman Villa sited in Fiumana (FC), Italy. This method aims at concentrating and analysing heavy minerals in the 15–250 μm grain size fraction, studying the ...
S. Andò   +6 more
wiley   +1 more source

Problems of the Metamorphic and Igneous Rocks of the Mojave Desert [PDF]

open access: yes, 1954
The Mojave Desert region, as defined by Baker (1911, pp. 335-336), is the region of desert plains, mountains, and valleys comprising the extreme southwestern portion of the Great Basin (fig. 1).
McCulloh, Thane H.
core  

Hydrothermal Circulation During Continental Breakup: Evolution of a Subseafloor Stockwork Mineralization at the South China Sea Rifted Margin

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract Hydrothermal activity during continental breakup and early oceanic spreading is poorly understood due to limited samples. A basalt‐hosted hydrothermal mineralization, drilled during IODP Expedition 367/368 at the northern South China Sea at the continent‐ocean transition provides a unique opportunity to investigate this phenomenon.
Jörg Follmann   +3 more
wiley   +1 more source

Dimensional distribution control of elongate mineral particles for their use in biological assays

open access: yesMethodsX, 2020
The aim of the present method is to reduce the dimensional variability of asbestos, elongate mineral particles, and other asbestiform minerals for use in biological assays.
Ruggero Vigliaturo   +3 more
doaj   +1 more source

Linking rock fabric to fibrous mineralisation: a basic tool for the asbestos hazard [PDF]

open access: yes, 2011
In recent years, many studies have addressed the effect on human health caused by asbestos exposures. As asbestos is a group of fibrous minerals that mainly occurs in mafic and ultramafic rocks (ophiolitic sequences), a close relationship between ...
A. Billi   +3 more
core   +2 more sources

Electrical Conductivity During Controlled Deformation at Upper‐Mantle Conditions: First Experimental Achievements in a Griggs‐Type Apparatus

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract Electrical conductivity measurements on well‐characterized materials in the laboratory allow accurate interpretations of high‐conductivity anomalies within the lithosphere and asthenosphere, both affected by substantial deformation over geological times.
Thomas P. Ferrand   +7 more
wiley   +1 more source

Geochemical Characteristics and Genetic Types of Gobi Nephrite in Ruoqiang—Qiemo, Xinjiang

open access: yesYankuang ceshi, 2019
BACKGROUND The Hetian nephrite belt is the longest nephrite belt in the world at 1300km. In addition to the traditional primary and placer nephrite, there is widespread Gobi nephrite in the Gobi desert of the Quoqiang district in Xinjiang.
LIU Xi-feng, JIA Yu-heng, LIU Yan
doaj   +1 more source

Strength and thermal stability of enhanced metakaolin‐based geopolymer composites with sand and fibers

open access: yesInternational Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract The growing demand for sustainable materials in construction and ceramics has driven interest in geopolymer technology as an eco‐friendly alternative to traditional cement‐based systems. Geopolymers, synthesized from aluminosilicate precursors like metakaolin, offer high mechanical performance, chemical resistance, and lower carbon footprints.
Ruy A. Sa Ribeiro   +5 more
wiley   +1 more source

Tabulation of Asbestos Related-Terminology [PDF]

open access: yes
The definition of asbestos often varies depending on the source or publication in which it is used. This report summarizes asbestos-related definitions taken from a variety of academic, industrial, and regulatory sources.
Greg Meeker, Heather Lowers
core  

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