Results 61 to 70 of about 2,871 (203)

Non‐innocent solvents in meteorite extractions: Evidence for artifact formation

Meteoritics &Planetary Science, EarlyView.
Abstract Solvent extraction is a cornerstone of meteoritic organic and inorganic chemistry, yet the assumption that common solvents act as chemically inert media is becoming increasingly untenable. This study reports that low‐molecular‐weight alcohols, particularly methanol and ethanol, are “non‐innocent” solvents when used to extract soluble sulfur ...
N. Randazzo, R. W. Hilts, R. M. Whittal, B. Reiz, V. Olan‐Rubio, C. D. K. Herd, I. H. Krouse   +6 more
wiley   +1 more source

The effects of pressure on immiscibility in metallic, core‐forming liquids: Implications for protoplanetary differentiation

Meteoritics &Planetary Science, EarlyView.
Abstract Mechanisms for metal core formation in rocky planetesimals and planetary embryos remain poorly constrained, in part due to complexities arising from immiscibility in core‐forming liquids at low pressures. To assess the pressure dependence of immiscibility and its role in protoplanetary differentiation, we performed experiments at 3 and 5 GPa ...
Geoffrey David Bromiley, Hidenori Terasaki, Matthew Varnam   +2 more
wiley   +1 more source

From Meteorite to Meteor-Wrong: Investigating a controversial specimen from Cuba

Revista Mexicana de Ciencias Geológicas
The meteorite “Cuba”, whose type of mass is catalogued as MNCN No. 17294 (Museum of Natural Sciences, Madrid, Spain), has long been considered an official meteorite, included in the Meteoritical Society’s online database.
Yasmani Ceballos-Izquierdo, Aurelio Nieto Codina, Johanset Orihuela   +2 more
doaj   +1 more source

Tunguusi fenomeni kajastus evenkide rahvapärimuses ja teaduslikes hüpoteesides [PDF]

Mäetagused, 2011
On 30 June 1908, a so far unexplained peculiar natural disaster occurred in central Siberia, in the vicinity of the River Podkamennaya Tunguska, the right tributary of Yenisei.
Natalia Dmitrieva, Vitali Romeiko
doaj  

Serra Pelada: the first Amazonian Meteorite fall is a Eucrite (basalt) from Asteroid 4-Vesta

Anais da Academia Brasileira de Ciências, 2018
Serra Pelada is the newest Brazilian eucrite and the first recovered fall from Amazonia (State of Pará, Brazil, June 29th 2017). In this paper, we report on its petrography, chemistry, mineralogy and its magnetic properties.
MARIA ELIZABETH ZUCOLOTTO, AMANDA A. TOSI, CAIO V.N. VILLAÇA, ANDRÉ L.R. MOUTINHO, DIANA P.P. ANDRADE, FABIANO FAULSTICH, ANGELO M.S. GOMES, DEBORA C. RIOS, MARCILIO C. ROCHA   +8 more
doaj   +1 more source

Schreibersite: an effective catalyst in the formose reaction network

New Journal of Physics, 2018
We report on the ability of the meteoritic material schreibersite to catalyze the generation of higher sugars from simple carbohydrates in the formose reaction network.
S Pallmann, J Šteflová (neé Svobodová), M Haas, S Lamour, A Henß, O Trapp   +5 more
doaj   +1 more source

Life on Mars? The physiological perspective

Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

Combustion and Pyrolysis EA‐IRMS Techniques to Determine the δ2H of Diamonds

Rapid Communications in Mass Spectrometry, Volume 40, Issue 10, 30 May 2026.
ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
François Fourel, Christophe Lécuyer, Emilie Thomassot, Etienne Deloule, Charles Ojeimi   +4 more
wiley   +1 more source

Phaetoni langemine: kreeka-rooma geomüüt meteoriidi mõju mälestuse säilitajana Baieris (Kagu-Saksamaa) [PDF]

Mäetagused, 2011
Arguing from a critical reading of the text, and scientific evidence on the ground, the authors show that the myth of Phaethon – the delinquent celestial charioteer – remembers the impact of a massive meteorite that hit the Chiemgau region in Bavaria ...
Barbara Rappenglück, Michael A. Rappenglück, Kord Ernstson, Werner Mayer, Andreas Neumair, Dirk Sudhaus, Ioannis Liritzis   +6 more
doaj  

Fluorination of Silver Phosphate in Nickel Reaction Vessels for Triple Oxygen Isotope Analysis

Rapid Communications in Mass Spectrometry, Volume 40, Issue 7, 15 April 2026.
ABSTRACT Rationale Increasingly, more laboratories are measuring the triple oxygen isotope values of phosphate. Standardization is key to having good interlaboratory results. Here, we present the triple oxygen isotope values of a suite of standards using fluorination and compare them with previously reported triple oxygen isotope values. Methods Silver
Jordan A. G. Wostbrock, Drake Yarian, Isabella Chiaravalloti, Spencer R. Moller, Ruth E. Blake   +4 more
wiley   +1 more source