![]() His expertise on heavy minerals (HM) is demonstrated in over 130 peer-reviewed professional manuscripts and publications that cover the fields of economic geology, geochemistry, geophysics, and environmental geology, for most of which he was the senior author. He continues his research as head of the Global Mineral Sands, Inc. Over the course of his career at USGS, Andrew led many multi-disciplinary, multi-agency scientific research projects and has developed and cultivated constructive enterprises between the federal and private sectors. Concurrently he served as the USGS Resources Specialist for Rare Earths (REE), Yttrium (Y), Scandium (Sc), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf), for which he developed exploration methods for US onshore and US Exclusive Economic Zone (USEEZ) marine hard-mineral resources. Andrew is a geologist, geochemist, and mineral resources specialist, having served the USGS for 35 years (1975-2011) 28 as a Research Geologist and 5+ as Developmental Geologist.
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