Daniel Gregory

Detailed Analysis of Sulfur Isotopic Signatures via Atom Probe Tomography

Lead Institution

University of Toronto

Principal Investigator

Daniel Gregory

Project type

Exploratory Research

Pyrite is the end sink of sulfur in organic rich sedimentary environments. It is important both because sulfate is important for respiration of many organisms at low oxygen concentrations and because…

Probing the Martian atmosphere and hydrosphere using micro and nanoscale analyses

Lead Institution

Royal Ontario Museum

Principal Investigator

Kimberly Tait-Sena

Project type

Large-Scale EMSL Research

The aim of this study is to fully characterize the micro- and nano-structural shock effects in Martian phosphate and sulfide minerals using cutting-edge EMSL instrumentation including: Transmission…

The effect of trace element content on the rate of biotic and abiotic pyrite oxidation

Lead Institution

University of California, Riverside

Principal Investigator

Timothy Lyons

Project type

Exploratory Research

The oxidation of pyrite is a common source of toxic trace elements and acid generation in many contaminated systems. A key component in understanding the potential threat to ecosystems and possible…

The effect of trace element content on the rate of biotic and abiotic pyrite oxidation

Lead Institution

University of California, Riverside

Principal Investigator

Timothy Lyons

Project type

Large-Scale EMSL Research

The oxidation of pyrite is a common source of toxic trace elements and acid generation in many contaminated systems. A key component in understanding the potential threat to ecosystems and possible…

The mechanism of pyrite formation: Implications for metal mobility during iron-sulfide transformations

Lead Institution

University of California, Riverside

Principal Investigator

Timothy Lyons

Project type

Large-Scale EMSL Research

Sulfidic sediments are a key sink for many potentially toxic trace elements in marine settings, with much of these elements ultimately being concentrated into the mineral pyrite. Pyrite can be an…

The formation of pyrite and incorporation of trace element and water inclusions: a view from modern depositional settings

Lead Institution

University of Toronto

Principal Investigator

Daniel Gregory

Project type

Large-Scale EMSL Research

This project utilizes atom probe tomography (APT) and transmission electron microscopy (TEM) to investigate microcrystalline masses of pyrite (FeS2) at the nano-scale. These analyses will be…

EMSL Science Overview

Daniel Gregory

Projects

Detailed Analysis of Sulfur Isotopic Signatures via Atom Probe Tomography

Probing the Martian atmosphere and hydrosphere using micro and nanoscale analyses

The effect of trace element content on the rate of biotic and abiotic pyrite oxidation

The effect of trace element content on the rate of biotic and abiotic pyrite oxidation

The mechanism of pyrite formation: Implications for metal mobility during iron-sulfide transformations

The formation of pyrite and incorporation of trace element and water inclusions: a view from modern depositional settings