Fig. 4: Elemental distribution within the mineral grain.
From: Deep anoxic aquifers could act as sinks for uranium through microbial-assisted mineral trapping
a LA-ICP-MS map of U, S, and Fe in sulfidized magnetite (Äspö HRL sample label #22131_4); b U map with several elevated U spots (up to 90 ppm) identified on the grain borders; c Transect across grain borders marked as A and B shows the amount of U associated with S and Fe (for details see SI and Supplementary Table 4).
