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UCLA geochemists and cosmochemists investigate chemical phenomena across vast scales, from atomic and molecular levels to planetary systems and beyond. Our research delves into the solar system's formation, tracing its links to interstellar matter and the transformation of primordial dust and gas into planetary foundations. We study early planetesimal geology, their aggregation into Earth and other planets, as well as geological process rates, extreme environment fluid chemistry, magma chamber dynamics, and metamorphic changes during orogeny. Our analytical capabilities include the national ion microprobe facility, various mass spectrometers, and a precision multi-collector ICP-MS for isotopic analysis. Experimental facilities enable mineral and fluid synthesis under conditions ranging from surface to core-mantle boundary pressures and temperatures, utilizing specialized furnaces, piston-cylinder apparatus, and diamond-anvil cells. Computational resources support quantum-level studies of materials through Linux clusters, complemented by analytical tools like electron microprobes, environmental SEMs, and Raman spectrometers.