Christian Josef Renggli

Christian Josef Renggli
University of Münster | WWU · Institute of Mineralogy

Doctor of Philosophy

About

39
Publications
5,928
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289
Citations
Introduction
I study the role of sulfur in high temperature gas-solid reactions in various volcanic and planetary environments experimentally. My experiments apply to oxidizing conditions on Earth, as well as reducing conditions in volcanic processes on the Moon, on the surface of Mercury and in enstatite chondrites. I also conduct experiments on the volatility of metals in gases and am interested in stable isotope fractionation of sulfur and metals in these processes.
Additional affiliations
April 2020 - present
University of Münster
Position
  • PostDoc Position
Description
  • Postdoctoral researcher in the framework of the TRR170, DFG funded project "Late Accretion onto Terrestrial Planets"
October 2018 - March 2020
University of Münster
Position
  • PostDoc Position
Description
  • Swiss National Science Foundation Early Postdoc.Mobility Fellowship
May 2018 - September 2018
University of Münster
Position
  • PostDoc Position
Description
  • Fellowship from the Late Accretion transregional collaborative research center TRR 170 Berlin-Münster
Education
March 2014 - April 2018
Australian National University
Field of study
  • Earth and planetary science
August 2011 - November 2013
Ludwig-Maximilians-University of Munich
Field of study
  • Geomaterials and Geochemistry
September 2007 - September 2010
Universität Bern
Field of study
  • Earth science

Publications

Publications (39)
Article
The surface of Mercury is enriched in sulfur, with up to 4 wt.% detected by the NASA MESSENGER mission, and has been challenging to understand in the context of other terrestrial planets. We posit, that magmatic S was mobilized as a gas phase in volcanic and impact processes near the surface, exposing silicates to a hot S-rich gas at reducing condi...
Article
We present new experimental results of Cr isotope fractionation during degassing of silicate melts. Our experiments at oxidizing conditions (in air) at 1 bar total pressure show that evaporative loss of Cr is substantial and depends on run duration and on temperature (between 1350 and 1500 °C). The stable Cr (δ⁵³Cr) isotope compositions of the evap...
Article
The evaporation of volatile and moderately volatile elements from silicate glasses is an important topic in geosciences, environmental, and materials sciences. Glasses that contain volatile elements are used in a wide range of experimental studies, but the synthesis of volatile-bearing glasses at high temperatures as well as the choice of starting...
Article
Full-text available
Extensive carbonation of peridotite results in listvenite, a rock composed of magnesite and quartz. At Gråberget, Røros, SE-Norway, a variably serpentinized peridotite body, surrounded by the Røros schists, a former abyssal sediment displays all stages of transformation of peridotite to quartzite. In this paper we record the sequence of steps in th...
Article
Full-text available
The Apollo 16 sample 66095, named “Rusty Rock”, is enriched in volatile and moderately volatile elements. The impact melt breccia is characterized by abundant Fe-rich sulfide and chloride alteration phases, including FeS, ZnS, and FeCl2. These phases have previously been interpreted to be the result of fumarolic alteration of the breccia. Here we p...
Article
We have synthesized and analyzed silicate glasses that are representative for the glasses on the surface of Mercury by mid-infrared reflectance spectroscopy, based on high-pressure laboratory experiments and the resulting compositions of the glass phase. The spectra are of interest for investigating the surface of Mercury using the MERTIS (Mercury...
Article
Full-text available
Metals are efficiently transported in a gas phase and the gas composition strongly affects transport rates of these metals in the gas phase. Here we present a new approach to systematically investigate metal transport and deposition from volcanic gases of different compositions: We test the effect of sulfur and chlorine on the volatilization of 30...
Article
Full-text available
Basalts are ubiquitous in volcanic systems on several planetary bodies, including the Earth, Mars, Venus, and Jupiter's moon Io, and are commonly associated with sulfur dioxide (SO2) degassing. We present the results of an experimental study of reactions between SO2 and basaltic glasses. We examined Fe‐free basalt, and Fe‐bearing tholeiitic and alk...
Article
Full-text available
Sulfur dioxide [SO2(g)] is the most abundant sulfur-bearing volcanic gas species on Earth. From its magmatic origin at depth to expulsion at the surface via either persistent degassing or large explosive volcanic eruptions, SO2(g) interacts with silicate materials at elevated temperatures. Similar high-temperature reactions also occur in the volcan...
Chapter
High temperature gas–solid reactions interactions are ubiquitous in and on the Earth and other planetary bodies (Fig. 1). In these natural systems, gases are elusive. Like a hurricane’s wind that leaves a path of destruction but no trace of wind after the event, the gas that initiated a gas–solid reaction may be conspicuously absent. Because gases...
Chapter
High temperature gas–solid reactions interactions are ubiquitous in and on the Earth and other planetary bodies (Fig. 1). In these natural systems, gases are elusive. Like a hurricane’s wind that leaves a path of destruction but no trace of wind after the event, the gas that initiated a gas–solid reaction may be conspicuously absent. Because gases...
Poster
Full-text available
Sulfur dioxide is the most abundant sulfur-bearing volcanic gas species on Earth, with approximately 10 Mt SO2 emitted on average globally each year. From its largely magmatic source at depths of 3 to 6 km below the surface, SO2 expands through the subvolcanic environment where it interacts with volcanic rocks from the sub-surface to the eruption p...
Thesis
Full-text available
Volcanic gases are an important part of the volatile cycle in active planetary systems and contribute significantly to the mobilization and transport of metals to planetary surfaces. On Earth, Venus, Mars and Io, SO2 is the most abundant corrosive species in volcanic gases, and basalts are ubiquitous on these planetary bodies. The reaction between...
Article
Full-text available
The 2.7–3 Ma Ertsberg East Skarn System (Indonesia), adjacent to the giant Grasberg Porphyry Copper deposit, is part of the world’s largest system of Cu–Au skarn deposits. Published fluid inclusion and stable isotope data show that it formed through the flux of magma-derived fluid through contact metamorphosed carbonate rock sequences at temperatur...
Article
Transport of metals in volcanic gases on the Moon differs greatly from their transport on the Earth because metal speciation depends largely on gas composition, temperature, pressure and oxidation state. We present a new thermochemical model for the major and trace element composition of lunar volcanic gas during pyroclastic eruptions of picritic m...
Article
Full-text available
Abstract A time series of experiments at high temperature have been performed to investigate the influence of particle settling on magma mixing. A natural rhyolite glass was held above a natural basalt glass in a platinum crucible. After melting of the glasses at superliquidus temperatures, a platinum sphere was placed on the upper surface of the r...
Article
Full-text available
In order to explore the materials' complexity induced by bubbles rising through mixing magmas, bubble-advection experiments have been performed, employing natural silicate melts at magmatic temperatures. A cylinder of basaltic glass was placed below a cylinder of rhyolitic glass. Upon melting, bubbles formed from interstitial air. During the course...
Conference Paper
Full-text available
Introduction Sulfur, F, Cl, Zn, Cu, Ni, Ga and Pb are found coating volcanic glass beads from Apollo 17 (A17) and Apollo 15 [1, 2]. The elements occur in sulfides and chlorides deposited from a gas phase [1, 3]. Early volcanic gas models have used Earth-like compositions at lunar oxygen fugacities [4]. Methods and Results We use predicted concentr...
Article
Full-text available
That rising bubbles may significantly affect magma mixing paths has already been demon strated by analogue experiments. Here, for the first time, bubble-advection experiments are performed employing volcanic melts at magmatic temperatures. Cylinders of basaltic glass were placed below cylinders of rhyolite glass. Upon melting, interstitial air form...
Article
Full-text available
Porphyry copper deposits—the primary source of the world’s copper—are a consequence of the degassing of intrusion com- plexes in magmatic arcs associated with ancient subduction zones . They are characterized by copper and iron sulphides, commonly found with anhydrite (CaSO4 ), over scales of several kilometres through intensely altered and fractur...
Conference Paper
Full-text available
Rising bubbles may significantly affect magma mixing paths as has been demonstrated by analogue experiments in the past. Here, bubble-advection experiments are performed for the first time employing natural materials at magmatic temperatures. Cylinders of basaltic glass were placed below cylinders of rhyolite glass. Upon melting, interstitial air f...
Conference Paper
Full-text available
Evidence for gas-solid reactions is found throughout the solar system: for example, sulfidation reactions in some meteorites and secondary phases coating lunar pyroclastic glasses. On Earth, the products of gas-solid reactions are documented in volcanic systems, metalliferous mineral deposits, impact craters, and on dust or meteorites after passage...

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Projects

Projects (7)
Project
Understanding the processes necessary to form terrestrial planets. My goal especially is to understand processes responsible for Moon formation.
Project
Assessing the role of large-scale magma degassing of planetesimals for setting the volatile budget of planetary building blocks