How is Helium Hosted in the Mantle? – A Case Study of Exhumed Peridotite from the Twin Sisters Ultramafic Complex

Carl Swindle1, Kenneth A Farley1, Douglas H Clark2 and Basil Tikoff3, (1)California Institute of Technology, Pasadena, CA, United States, (2)Western Washington Univ, Bellingham, WA, United States, (3)Univ Wisconsin, Madison, WI, United States