Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules

Details Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50..681g&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 50, May 1986, p. 681-691.

Computer Science

16

Carbon, Cohenite, Magma, Meteoritic Composition, Spherules, Ureilites, Iron Alloys, Nickel Alloys, Petrography, Phase Diagrams, Solid Phases

Scientific paper

The compositions and mineralogy of metal-sulfide spherules trapped in ureilites are studied. Electron microprobe analyses of metallic phases and sulfides in spherules were conducted and backscattered electron images of metallic spherules in olivine and in ureilites are presented. It is observed that the spherules are composed of cohenite, Fe-Ni metal, troilite, and rare phosphorus-bearing minerals. The intergranular metal and graphite in the ureilites are analyzed. The phase relations of cohenite-bearing spherules are considered. Spherules represent Fe-Ni-C-S alloys that exist as immiscible metallic liquid droplets in the silicate magma from which ureilite olivine and pigeonite crystallized. The data reveal that graphite crystals occur as inclusions in olivine and ureilites and therefore graphite in ureilites is a primary magnetic component. It is hypothesized that graphite is a residue from the solid source materials that melted to produce the ureilite parent magma or crystallized from the magma.

Affiliated with

Also associated with

No associations

Rating

Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primary magmatic carbon in ureilites - Evidence from cohenite-bearing metallic spherules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1773687