Fluid Inclusion Photomicrographs

Photomicrographs of secondary fluid inclusions in apatite (A) and milky quartz (B–H) from Pea Ridge. A.–C. Saline liquid-rich inclusions. D. Hypersaline inclusion with halite, calcite, and hematite. E. Vapor-rich inclusion. F. Hypersaline inclusion with CO₂. G. Vapor-rich inclusion with CO₂. H. Inclusion assemblage with variable phase ratios. Similar inclusions are present in each alteration zone and within fragments in the REE-rich breccia pipes. From Hofstra and others, 2016, doi:10.2113/econgeo.111.8.1985.