A. Christy

Publications183
h-index35
Citations4,474
Highly Influential Citations251
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THE PYROCHLORE SUPERGROUP OF MINERALS: NOMENCLATURE
A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC-IMA, is based on the ions at the A, B and Y sites. What has been referred to until now as the pyrochlore group should…
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Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides
Abstract Layered double hydroxide (LDH) compounds are characterized by structures in which layers with a brucite-like structure carry a net positive charge, usually due to the partial substitution of…
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Self-Assembled Silica-Carbonate Structures and Detection of Ancient Microfossils
TLDR
Inorganic micron-sized filaments, whose microstucture consists of silica-coated nanometer-sized carbonate crystals, arranged with strong orientational order, are synthesized, demonstrating that abiotic and morphologically complex microstructures that are identical to currently accepted biogenic materials can be synthesized inorganically.
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Stevensite in the modern thrombolites of Lake Clifton, Western Australia: A missing link in microbialite mineralization?
Microbialites form the earliest macroscopic evidence of life, and have always been important in particular aquatic ecosystems. They demonstrate the remarkable ability of microorganisms to provide the…
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Extremely Pb-rich rock-forming silicates including a beryllian scapolite and associated minerals in a skarn from Långban, Värmland, Sweden
Abstract We report preliminary petrographic and mineral chemical data for a rock hosting an unusual mineral assemblage from Långban, Värmland, Sweden. The rock is a two…
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UHP metamorphic evolution of coesite-bearing eclogite from the Yuka terrane, North Qaidam UHPM belt, NW China
Coesite, recognized petrographically and confirmed by Raman spectroscopy, is reported from a coarse-grained eclogite from the Yuka terrane, North Qaidam UHP metamorphic belt. This represents the…
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New constraints from U–Pb, Lu–Hf and Sm–Nd isotopic data on the timing of sedimentation and felsic magmatism in the Larsemann Hills, Prydz Bay, East Antarctica
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Isosymmetric structural phase transitions : phenomenology and examples
Structural phase transitions ('type 0') in which there is no change of space group or of the occupied Wyckoff sites contrast with others in which diffusionless transformation can occur in a single…
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Pharmaceuticals and personal care products (PPCPs) in Australia's largest inland sewage treatment plant, and its contribution to a major Australian river during high and low flow.
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Morphology: an ambiguous indicator of biogenicity.
TLDR
A range of inorganic processes are described that result in morphologies emulating biological shapes, with particular emphasis on geochemically plausible processes in alkaline silica-rich environments.
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