Alex Marshall

Alex Marshall


I am an exploration geologist from Wales carrying out a NERC-funded PhD on the topic of vein-hosted gold mineralisation at the University of Leeds. From an early age, I was fascinated by rock/mineral formation and studied A-Level geology alongside chemistry and physics. Between 2014 and 2017, I attended Cardiff University where I studied for a BSc in Exploration and Resource Geology. Following this, I obtained an MSc in Mining Geology from Exeter University, Camborne School of Mines in Cornwall.

During the end of my second-year undergraduate studies, I carried out an industry placement in Azerbaijan where I worked at an open pit and underground copper-gold mine. Mapping, sample and core logging information was used to produce my dissertation.
At the end of my MSc degree, I completed a work placement at the tin-tungsten mine in Devon now operated by Tungsten West. The work mostly involved core logging orientated diamond drill core samples to acquire structural and mineralogical data for developing a deposit formation model. I presented the findings of this project at the annual national Mineral Deposits Studies Group (MDSG) and Ussher Society conferences at the beginning of 2019.

Since graduating in 2018, I have worked as a paid intern in SRK Consulting’s Cardiff office (Resource Geology), an exploration geologist in North Wales conducting soil sampling as part of a regional gold exploration campaign, a mine geologist in Northern Sweden and an exploration geologist in Saudi Arabia. The majority of my industry experience has been field-based working on mostly greenfield/brownfield gold and base-metal exploration projects. The start date of my PhD is October 2021.



Research interests

My research interests focus on the formation of gold-bearing veins, particularly in orogenic and epithermal deposit settings. I aim to replicate vein formation in the laboratory to better understand gold deposition processes which can lead to a variety of vein textures, compositions and ore characteristics. I also seek to understand how post-mineralisation deformation events can alter gold crystal structure and trace-element migration. Finally, I am interested in physically and geochemically characterising alluvial gold grains to understand their hard rock origins.


  • MSc Mining Geology (University of Exeter 2017-2018)
  • BSc Exploration and Resource Geology (Cardiff University, 2014-2017)