Journal of Mineralogical and Petrological Sciences
Online ISSN : 1349-3825
Print ISSN : 1345-6296
LETTERS
Ni-Fe alloy possibly associated with reduced magmatic fluids in lower-crustal gabbro, IODP Hole U1309D, Atlantis Massif, Mid-Atlantic Ridge
Akiko NIINOJinichiro MAEDAToru YAMASAKIFumiaki TAKEDA
Author information
JOURNALS FREE ACCESS

2009 Volume 104 Issue 5 Pages 290-295

Details
Abstract

A Ni-Fe alloy (Ni3.8Fe0.1Co0.1) was found in olivine-poor gabbro recovered from the Integrated Ocean Drilling Program (IODP) Hole U1309D, Atlantis Massif, 30°N on the Mid-Atlantic Ridge. Ni-Fe alloys are one of the unique minerals formed during serpentinization; however, our finding establishes that Ni-Fe alloys are also formed in the gabbroic crust possibly associated with extremely reduced magmatic fluids. The occurrence of the Ni-Fe alloy suggests that oceanic lower-crustal gabbros as well as serpentinites may be potential reservoirs of abiogenic CH4.

Information related to the author
© 2009 Japan Association of Mineralogical Sciences
Previous article Next article
feedback
Top