Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Daniel J. Malvin"'
Publikováno v:
Geochimica et Cosmochimica Acta. 71:760-781
Group IIAB is the third largest group of iron meteorites and the second largest group that formed by fractional crystallization; many of these irons formed from the P-rich portion of a magma consisting of two-immiscible liquids. We report neutron-act
Autor:
John H. Jones, Daniel J. Malvin
Publikováno v:
Metallurgical Transactions B. 21:697-706
As nonmetals are added to the Fe-Ni system, segregation coefficients(k) of trace constituents change dramatically. For example, as the S content of the metallic liquid increases from 0 to ≈31 wt pct, the molar k(Ge) between solid and liquid metal i
Publikováno v:
Geochemistry. 2:34-44
Based on structural observations and the concentrations of Cr, Co, Ni, Cu, Ga, Ge, As, Sb, Re, Ir, and Au by neutron-activation analysis we have classified 14 Chinese iron meteorites. Thirteen are members of the large groups IAB, IIICD, IIIAB and IVA
Publikováno v:
Geochemistry. 4:210-219
Reported in this paper are structural and compositional data as the basis for the classification of 35 iron meteorites.
Autor:
Michael J. Drake, Daniel J. Malvin
Publikováno v:
Geochimica et Cosmochimica Acta. 51:2117-2128
The crystal/liquid partitioning of Ga and Ge has been measured experimentally between forsterite, diopside, anorthite and spinel and melts in the pseudoternary system forsterite-anorthite-diopside at one atmosphere pressure and 1300°C. Gallium is in
Publikováno v:
Geochimica et Cosmochimica Acta. 50:1221-1231
Measurements of solid metal/liquid metal trace element partition coefficients, which are used to interpret the crystallization history of magmatic iron meteorite groups differ greatly between different research groups, using different experimental te
Publikováno v:
Geochimica et Cosmochimica Acta. 48:805-813
It is found, on the basis of new neutron activation data for group IVB, that log-element - log-Ni trends are best understood in terms of core formation and fractional crytstallizaion. The limited compositional range found in gorup IVB is thought to r
Autor:
Toshiko K. Mayeda, Robert N. Clayton, John T. Wasson, Daniel J. Malvin, Walter Silva da Curvello
Publikováno v:
Meteoritics. 20:259-273
On the basis of its metal composition, the unique Bocaiuva meteorite, which consists of major metal having a high Ge/Ga ratio and minor silicates, appears distantly related to certain iron meteorites with similar Ge contents and similar Ge/Ga ratios.
Publikováno v:
Geochimica et Cosmochimica Acta. 48:785-804
We report structural and compositional data leading to the classification of 41 iron meteorites, increasing the number of classified independent iron meteorites to 576. We also obtained data on a new metal-rich mesosiderite and on two new iron masses
Publikováno v:
Meteoritics. 23:107-112
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, A