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The crystal structure and chemistry of natural giniite and implications for Mars

期刊: AMERICAN MINERALOGIST, 2023; 108 (3)

Investigations of planetary processes using phosphate minerals often focus on igneous, recrystallized, or potentially metasomatized minerals, likely a......

Nudged elastic band calculations of the (4H)SiX hydrogarnet type defect in Mg2SiO4 forsterite

期刊: AMERICAN MINERALOGIST, 2023; 108 (5)

First-principles calculations based on density functional theory (DFT) using the generalized gradient approximation (GGA) were performed to assess the......

Raman analysis of octocoral carbonate ion structural disorder along a natural depth gradient, Kona coast, Hawai'i

期刊: AMERICAN MINERALOGIST, 2023; 108 (5)

Both environmental and physiological factors cause carbonate ion structural disorder in biogenic Mg-calcites. A major component of this disorder is dr......

Heavy halogen compositions of lamprophyres derived from metasomatized lithospheric mantle beneath eastern North China Craton

期刊: AMERICAN MINERALOGIST, 2023; 108 (10)

Halogens and other volatiles are widely recycled into the deep mantle by subduction and are key components to metasomatize the sub-continental lithosp......

Hydrothermal alteration of magmatic titanite: Implications for REE remobilization and the formation of ion-adsorption HREE deposits, South China

期刊: AMERICAN MINERALOGIST, 2023; 108 (11)

Ion-adsorption rare earth element (REE) deposits in South China are currently the main source of heavy rare earth elements (HREE). The Gucheng deposit......

Resetting of the U-Pb and Th-Pb systems in altered bastnasite: Insight from the behavior of Pb at nanoscale

期刊: AMERICAN MINERALOGIST, 2023; 108 (3)

Bastnasite contains considerable amounts of U and Th and has been widely used for U-Th-Pb dating. Hydrothermal alteration of bastnasite is common in n......

A novel method for experiments in a one-atmosphere box furnace

期刊: AMERICAN MINERALOGIST, 2023; 108 (6)

We present a conceptually simple method to perform high-temperature experiments in a one atmosphere box furnace that has a negligible cost of material......

Characterization of nano-minerals and nanoparticles in supergene rare earth element mineralization related to chemical weathering of granites

期刊: AMERICAN MINERALOGIST, 2023; 108 (8)

Ion adsorption-type rare earth element (REE) ore deposits in South China are a major source of heavy rare earth elements (HREE) around the world, whic......

Hydrous wadsleyite crystal structure up to 32 GPa

期刊: AMERICAN MINERALOGIST, 2023; 108 (10)

Hydroxylation of wadsleyite, beta-(Mg,Fe)(2)SiO4, is associated with divalent cation defects and well known to afect its physical properties. However,......

Witness to strain: Subdomain boundary length and the apparent subdomain boundary density in large strained olivine grains

期刊: AMERICAN MINERALOGIST, 2023; 108 (10)

Electron backscatter diffraction (EBSD) investigation of strain mainly uses polycrystalline samples to study fabric development. We extend the use of ......

An evolutionary system of mineralogy, Part VI: Earth's earliest Hadean crust (>4370 Ma)

期刊: AMERICAN MINERALOGIST, 2023; 108 (1)

Part VI of the evolutionary system of mineralogy catalogs 262 kinds of minerals, formed by 18 different processes, that we suggest represent the earli......

Tourmaline and zircon trace the nature and timing of magmatic-hydrothermal episodes in granite-related Sn mineralization: Insights from the Libata Sn ore field

期刊: AMERICAN MINERALOGIST, 2023; 108 (3)

The Bin Yauri-Libata polymetallic ore district is a Sn and Au ore-bearing district in the Zuru schist belt, Northwestern Nigeria. The Libata Sn ore fi......

The iron spin transition of deep nitrogen-bearing mineral Fe3N1.2 at high pressure

期刊: AMERICAN MINERALOGIST, 2023; 108 (4)

Nitrogen is an essential element for life, one of the most abundant volatiles in the atmosphere, and an important component in the Earth's interior, w......

Experimental investigation of trace element partitioning between amphibole and alkali basaltic melt: Toward a more general partitioning model with implications for amphibole fractionation at deep crustal levels

期刊: AMERICAN MINERALOGIST, 2023; 108 (9)

Time-series experiments were carried out in a piston-cylinder apparatus at 0.8 GPa and 1030-1080 degrees C using a hydrous K-basalt melt as the starti......

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