Trace element partitioning between taenite and kamacite - relationship to the cooling rates of iron meteorites

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Meteoritics; (United States)

DOI:https://doi.org/10.1111/j.1945-5100.1988.tb00905.x· OSTI ID:6591337

Rasmussen, K L; Malvin, D J; Wasson, J T

Instrumental neutron activation analysis (INAA) was used to determine Ni, Co, Cu, Ga, As, Au, W, Re and Ir in taenite lamellae isolated by acid dissolution from eight iron meteorites from groups IA, IIIAB and IVA. Taenite is enriched in Ni, Cu, Ga, As, Au, W, Re and Ir relative to kamacite, whereas taenite is depleted in Co. Taenite/kamacite partition ratios in slowly cooled IAB meteorites are farther from unity than those in rapidly cooled IVA meteorites. Taenite/kamacite partition ratios for Cu, Ir, Au and Co may be sensitive cooling rate indicators. 17 references.

• Research Organization: California Univ., Los Angeles (USA); Copenhagen Univ. (Denmark); Arizona Univ., Tucson (USA)
• OSTI ID: 6591337
• Journal Information: Meteoritics; (United States), Journal Name: Meteoritics; (United States) Vol. 23; ISSN MERTA
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ACTIVATION ANALYSIS
BARYON REACTIONS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
COBALT COMPOUNDS
COPPER COMPOUNDS
ELEMENTS
HADRON REACTIONS
IRON METEORITES
METEORITES
NEUTRON REACTIONS
NICKEL COMPOUNDS
NUCLEAR REACTIONS
NUCLEON REACTIONS
TRACE AMOUNTS
TRANSITION ELEMENT COMPOUNDS