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Olivine from aillikites in the Tarim large igneous province as a window into mantle metasomatism and multi-stage magma evolution

期刊: AMERICAN MINERALOGIST, 2021; 106 (7)

Aillikites are carbonate-rich ultramafic lamprophyres, and although they are volumetrically minor components of large igneous province (LIP), these ro......

Formation pathway of norsethite dominated by solution chemistry under ambient conditions

期刊: AMERICAN MINERALOGIST, 2021; 106 (8)

Recently dolomite analogs, including norsethite, kutnahorite, and PbMg(CO3)(2), etc., have attracted much attention due to their dolomite-like crystal......

Multiple generations of tourmaline from Yushishanxi leucogranite in South Qilian of western China record a complex formation history from B-rich melt to hydrothermal fluid

期刊: AMERICAN MINERALOGIST, 2021; 106 (6)

One tourmaline-bearing leucogranite dike occurs in the Yushishanxi Nb-Ta mining area in the Yushishan district of the South Qilian orogenic belt in we......

Evidence for a two-stage particle attachment mechanism for phyllosilicate crystallization in geological processes

期刊: AMERICAN MINERALOGIST, 2021; 106 (6)

The understanding of crystal nucleation and growth has evolved over the past two decades from the conventional atom-by-atom model to a non-classical a......

High-pressure syntheses and crystal structure analyses of a new low-density CaFe2O4-related and CaTi2O4-type MgAl2O4 phases

期刊: AMERICAN MINERALOGIST, 2021; 106 (7)

Three single crystals of CaTi2O4 (CT)-type, CaFe2O4 (CF)-type, and new low-density CaFe2O4 (LD-CF) related MgAl2O4 were synthesized at 27 GPa and 2500......

Redox control and measurement in low-temperature (< 450 degrees C) hydrothermal experiments

期刊: AMERICAN MINERALOGIST, 2021; 106 (8)

Redox control in hydrothermal experiments is routinely achieved through double-capsule and Shaw membrane techniques. These techniques control oxygen f......

Immiscible-melt inclusions in corundum megacrysts: Microanalyses and geological implications

期刊: AMERICAN MINERALOGIST, 2021; 106 (4)

Controversies on the origin of zircon, corundum, titanomagnetite, and quartz megacrysts in alkali basalts mostly reflect the lack of direct evidence o......

Gamma-enhancement of reflected light images: A rapid, effective tool for assessment of compositional heterogeneity in pyrite

期刊: AMERICAN MINERALOGIST, 2021; 106 (4)

Trace/minor element variation in pyrite is a feature that has proved invaluable for reconstructing a wide range of geological processes. Routine refle......

The evolution of saponite: An experimental study based on crystal chemistry and crystal growth

期刊: AMERICAN MINERALOGIST, 2021; 106 (6)

Element incorporation and partitioning during the evolution of clay minerals have significant implications for element cycling in geochemical processe......

Zhanghuifenite, Na3Mn42+ Mg2Al(PO4)(6), a new mineral isostructural with bobfergusonite, from the Santa Ana mine, San Luis province, Argentina

期刊: AMERICAN MINERALOGIST, 2021; 106 (6)

A new mineral species, zhanghuifenite, ideally Na3Mn42+ Mg2Al(PO4)(6), has been found in the Santa Ana mine, San Luis province, Argentina. It occurs i......

Recycled volatiles determine fertility of porphyry deposits in collisional settings

期刊: AMERICAN MINERALOGIST, 2021; 106 (4)

An intensive study of the geochemical characteristics (including the volatile elements Cl and S) of apatite associated with porphyry deposits was unde......

Tourmaline composition and boron isotope signature as a tracer of magmatic-hydrothermal processes

期刊: AMERICAN MINERALOGIST, 2021; 106 (7)

This study presents a petrogeochemical and boron isotope study on tourmaline from the barren Damai, and the contemporaneous but ore-bearing Dewulu and......

Crystal chemistry and high-temperature vibrational spectra of humite and norbergite: Fluorine and titanium in humite-group minerals

期刊: AMERICAN MINERALOGIST, 2021; 106 (7)

The humite-group minerals along the brucite-olivine join may be important dense hydrous magnesium silicate (DHMS) phases in the subducting slab. Fluor......

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