Results 11 to 20 of about 148,265 (366)

Zircon ages in granulite facies rocks: decoupling from geochemistry above 850 °C? [PDF]

open access: yesContributions to Mineralogy and Petrology, 2018
Granulite facies rocks frequently show a large spread in their zircon ages, the interpretation of which raises questions: Has the isotopic system been disturbed? By what process(es) and conditions did the alteration occur?
A Boriani   +120 more
core   +2 more sources

Zircon: The Metamorphic Mineral

open access: yesReviews in Mineralogy and Geochemistry, 2017
A mineral that forms under conditions as variable as diagenesis to deep subduction, melt crystallization to low temperature alteration, and that retains information on time, temperature, trace element and isotopic signatures is bound to be a useful petrogenetic tool. The variety of conditions under which zircon forms and reacts during metamorphism is a
Daniela Rubatto, Daniela Rubatto
openaire   +4 more sources

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+12 more sources

Physico-chemical and mechanical properties of geopolymer/zircon composites [PDF]

open access: yesScience of Sintering, 2022
The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin ...
Kljajević Ljiljana   +6 more
doaj   +1 more source

Mechanical Alloying Process Applied for Obtaining a New Biodegradable Mg-xZn-Zr-Ca Alloy

open access: yesMetals, 2022
The aim of the present paper is to apply the mechanical alloying process to obtain from powder components a new biodegradable Mg-based alloy powder from the system Mg-xZn-Zr-Ca, with high biomechanical and biochemical performance.
Doina Raducanu   +8 more
doaj   +1 more source

Life cycle assessment comparison between zircon and alumina sand applied to ceramic tiles

open access: yesCleaner Engineering and Technology, 2022
The goal of the study is to assess and compare the use of opacifier (whitener) materials zircon sand and alumina applied in ceramic tiles production. This study provides a comparison using a cradle-to-gate life cycle assessment (LCA) approach, giving an ...
Andrea Morfino   +3 more
doaj   +1 more source

Interpretation of zircon coronae textures from metapelitic granulites of the Ivrea–Verbano Zone, northern Italy: two-stage decomposition of Fe–Ti oxides [PDF]

open access: yesSolid Earth, 2017
In this study, we report the occurrence of zircon coronae textures in metapelitic granulites of the Ivrea–Verbano Zone. Unusual zircon textures are spatially associated with Fe–Ti oxides and occur as (1) vermicular-shaped aggregates 50–200 µm long and
E. Kovaleva   +3 more
doaj   +1 more source

Mineralogical and geochemical characteristics of zircon from diorite porphyry dyke in Sergozerskoe gold occurrence (the Strel'ninsky greenstone belt, Kola region) [PDF]

open access: yesVestnik MGTU, 2016
Mineralogical and geochemical investigation of zircon from diorite porphyry from Sergozerskoe occurrence has been carried out. Study of morphology and inner structure of zircon crystals in back scattered electron rays as well as assaying for content and ...
Kudryashov N. M.   +3 more
doaj   +1 more source

A STUDY OF THE ZIRCONATES. [PDF]

open access: yesJournal of the American Chemical Society, 1896
n ...
Venable, F. P., Clarke, Thomas
openaire   +2 more sources

Study on the Morphology of Zircon-bearing Epoxy Resin Surface and Its Effect for LA-ICP-MS Analysis

open access: yesYankuang ceshi, 2020
BACKGROUND Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is currently one of the commonly used methods for zircon research. This method generally uses epoxy resin targets as carriers.
HU Zhi-zhong   +4 more
doaj   +1 more source

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