Conamara Brine Lenses

Beneath the jumbled ice rafts of Conamara Chaos, Europa's shell holds isolated pockets of salty water that froze only partially as they rose from the ocean below. These brine lenses, between 400 and 850 metres down, are concentrated in dissolved lithium and rubidium.

Cryo-sampling specialist Ylva Strand reached the first lens in 2186 with a Cryo Ice-Core Sampler, melting a 900-metre-rated borehole and recovering both frozen core and pressurised brine. Assays of 22 samples average 210 g/t lithium, 35 g/t rubidium and a trace of helium-3 at 6 parts per billion. Ice-penetrating radar suggests 14 similar lenses within a 12-kilometre sled radius.

Total brine volume is estimated at 40 million cubic metres. The site is under a research claim held by the Europa Subsurface Assay Institute, which forbids commercial extraction until contamination studies of the ocean below are complete. The Guild provides drilling crews and equipment under contract and shares all results through the Jovian Volatiles Census.