The Jadar deposit, Serbia

The Jadar lithium-boron (Li-B) deposit in Serbia represents the type locality and only recorded occurrence of the mineral jadarite (Stanley et al, 2007). It was discovered in 2004 by Rio Tinto.

The Jadar deposit contains two unusual monoclinic boron (B)-bearing minerals, which contain significantly more silicon dioxide (SiO2) than the other B-bearing minerals with which they occur (notably colemanite): 

  • jadarite (LiNaSiB3O7(OH))
  • searlesite (Na(H2BSi2O7))

The absence of these minerals in other intermontane lacustrine evaporite-type deposits suggests that the Jadar deposit was formed by atypical mineralisation processes.

Project aims

To better understand the genesis of the Jadar deposit we are investigating the mineralising processes that produce jadarite and searlesite, and identifying sources of Li, B and SiO2 in the system.

Our work will inform better processing technologies for the minerals and develop exploration models for the Jadar deposit type.

Project details

Rio Tinto Sava
University of Belgrade, Serbia

The Natural History Museum
Rio Tinto Sava


Critical elements (CE)
Those elements considered to be crucial for the development of technology in modern society. Our studies include lithium, cobalt, scandium, gallium, indium, selenium, tellurium and rare earth elements (REEs).