Mineralogy and mineral chemistry of quartz: A review
J Götze, Y Pan, A Müller - mineralogical magazine, 2021 - cambridge.org
Quartz (trigonal, low-temperature α-quartz) is the most important polymorph of the silica
(SiO2) group and one of the purest minerals in the Earth crust. The mineralogy and mineral …
(SiO2) group and one of the purest minerals in the Earth crust. The mineralogy and mineral …
Mineralogy, geochemistry and genesis of agate—A review
Agate—a spectacular form of SiO2 and a famous gemstone—is commonly characterized as
banded chalcedony. In detail, chalcedony layers in agates can be intergrown or intercalated …
banded chalcedony. In detail, chalcedony layers in agates can be intergrown or intercalated …
Comparative in-situ U–Th–Pb geochronology and trace element composition of baddeleyite and low-U zircon from carbonatites of the Palaeozoic Kovdor alkaline …
NV Rodionov, BV Belyatsky, AV Antonov… - Gondwana …, 2012 - Elsevier
The most widely used geochronometer for dating geological events is the U–Pb isotope
system used on zircon crystals. However, in silica-undersaturated ultramafic and alkaline …
system used on zircon crystals. However, in silica-undersaturated ultramafic and alkaline …
[HTML][HTML] Nature of fluid and genetic affiliation of the Bakoshi-Kundila Au deposit, Nigeria: Evidence from trace elements in hydrothermal quartz
Abstract The Bakoshi-Kundila Au deposit is located in the Nigerian Shield in West Africa. In
this deposit, Au-bearing pyrite contains inclusions of Au-rich hydrothermal quartz. Whether …
this deposit, Au-bearing pyrite contains inclusions of Au-rich hydrothermal quartz. Whether …
Hydrothermal silicification along faults affecting carbonate-sandstone units and its impact on reservoir quality, Potiguar Basin, Brazil
We analyzed hydrothermal silicification along the Afonso Bezerra strike-slip fault system in
the Potiguar Basin, equatorial margin of Brazil, to assess the role of Si-rich fluids in fault …
the Potiguar Basin, equatorial margin of Brazil, to assess the role of Si-rich fluids in fault …
Correlations between cathodoluminescence intensity and aluminum concentration in low-temperature hydrothermal quartz
Quartz cathodoluminescence (CL) images are commonly combined with trace element
concentrations to decipher complex histories of hydrothermal systems. However, the …
concentrations to decipher complex histories of hydrothermal systems. However, the …
Primary silica precipitate at the Precambrian/Cambrian boundary in the south Oman salt basin, sultanate of Oman
An organic-rich laminated chert (silicilyte) consisting of up to 90% microcrystalline quartz
that formed at the Precambrian–Cambrian boundary acts as a light-oil reservoir in the …
that formed at the Precambrian–Cambrian boundary acts as a light-oil reservoir in the …
Agate genesis: A continuing enigma
T Moxon, G Palyanova - Minerals, 2020 - mdpi.com
This review covers the last 250 years of major scientific contributions on the genesis of
agates found in basic igneous host rocks. From 1770 to 1955, the genesis question was …
agates found in basic igneous host rocks. From 1770 to 1955, the genesis question was …
Uranyl binding mechanism in microcrystalline silicas: A potential missing link for uranium mineralization by direct uranyl co-precipitation and environmental …
Genetic models for the formation of uranium deposits almost invariably invoke the reduction
of U (VI) to U (IV) as the deposition mechanism. However, the questions of when and how …
of U (VI) to U (IV) as the deposition mechanism. However, the questions of when and how …
Hydrothermal genesis and growth of the banded agates from the Allumiere-Tolfa volcanic district (Latium, Italy)
A Conte, G Della Ventura, B Rondeau… - Physics and Chemistry …, 2022 - Springer
In this work, we studied the hydrothermal agates from the Neogene–Quaternary volcanic
district of Allumiere-Tolfa, north-west of Rome (Latium, Italy) using a combination of micro …
district of Allumiere-Tolfa, north-west of Rome (Latium, Italy) using a combination of micro …