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Gold-bearing arsenian pyrite and marcasite and arsenopyrite from Carlin Trend gold deposits and laboratory synthesis
Gold-bearing arsenian pyrite marcasite arsenopyrite Carlin Trend gold deposits laboratory synthesis
2012/4/1
Invisible gold in natural and synthetic arsenian pyrite and marcasite correlates with
anomalous As content and Fe deficiency, and high contents of invisible gold in most natural
and all synthetic ar...
The Nature of Polynuclear OH-Al Complexes in Laboratory-Hydrolyzed and Commercial Hydroxyaluminum Solutions
Al13 complexes Aluminum chlorohydrate Polyaluminum chloride Polynuclear OH-Al complexes
2011/12/29
Laboratory-hydrolyzed and commercial OH-Al solutions were characterized using kinetics of Al-ferron color development, kinetics of structural OH neutralization with H+, 27Al NMR spectroscopy, and sulf...
X-ray Diffraction Studies of Illite/Smectite from Rocks, < 1 祄 Randomly Oriented Powders, and < 1 祄 Oriented Powder Aggregates: The Absence of Laboratory-Induced Artifacts
Artifacts Illite/smectite Powder X-ray diffraction Sample preparation Turbostratic X-ray coherence
2011/12/31
X-ray diffraction patterns were obtained from rock fragments, < 1 祄 randomly oriented freeze-dried powders, and < 1 祄 oriented aggregates for 11 mixed-layered illite/smectite samples (K-bentonites) th...
Kaolinite Synthesis. I. Crystallization Conditions at Low Temperatures and Calculation of Thermodynamic Equilibria. Application to Laboratory and Field Observations
Aluminum Hydroxide Kaolinite Synthesis Thermodynamic
2012/2/10
The equilibrium diagrams developed for Al-hydroxide and for kaolinite by Garrels and Christ (1965) have been modified by taking into account the existence of gels. From the stability zones obtained, t...
Artificial alteration of thirty-five trioctahedral and one dioctahedral micas by solutions varying in strength from 0·001 to 1·00 molal magnesium sulfate was found to approximate a normal exchange rea...