Origin of felsic achondrites Graves Nunataks 06128 and 06129, and ultramafic brachinites and brachinite-like achondrites by partial melting of volatile-rich primitive parent bodies
Day, James M. D., Walker, Richard J., Ash, Richard D., , Taylor, Lawrence A.(2012). Origin of felsic achondrites Graves Nunataks 06128 and 06129, and ultramafic brachinites and brachinite-like achondrites by partial melting of volatile-rich primitive parent bodies. Geochimica et Cosmochimica Acta, 81, 94-128. https://doi.org/10.1016/j.gca.2011.12.017
Representative HSE abundances (in ppm) in GRA 06128/9, EET 99402 and NWA 5400 sulphides and metals
ICPMS, NTIMS-ID
Re, Ir, Pd, Rh, Ru, Os, Au, Pt, Mo, W
MB-C
MetBase 2915 Compilation
ICPMS
Cs, Gd, Lu, Hf, Sr, Nd, W, Tb, Tm, Dy, Eu, Mn, Cu, Se, Er, Cr, Mo, Li, Ga, Nb, Ce, Zr, Ni, Ho, Th, V, Fe, Sm, U, Sc, Pr, Ge, Rb, P, Ba, Yb, Ta, Ti, Zn, La, Y, Sn, Co, Pb
Methods
method name
laboratory
method comment
More details are available for the following variables
CALCULATED
UNKNOWN
N/A
ELECTRON MICROPROBE
UNIVERSITY OF TENNESSEE
Cameca SX 50, mineral compositions determined in wave-length dispersive spectral mode using an accelerating potential of 15 keV, a 20 nA beam current, with beam focus of 1 lm. Peak and background counting times of 20–30 s and standard PAP correction procedures were used. Glass and plagioclase compositions were deter- mined using a 10 nA beam current, a 5–10 lm beam size, and longer counting times to avoid mobilisation of Na, K, or Cl.
INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY
UNKNOWN
N/A
LASER ABLATION INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY
UNIVERSITY OF MARYLAND
New Wave Research UP213 (213 nm) laser-ablation system coupled to a Thermo-Finnigan Element 2
MASS SPECTROMETRY
GEOPHYSICAL LABORATORY, CARNEGIE INSTITUTION OF WASHINGTON
Methods of Day et al, 2009
NEGATIVE THERMAL IONIZATION MASS SPECTROMETRY
UNIVERSITY OF MARYLAND
ThermoFisher Triton
Os187_Os188[IS]
NEGATIVE THERMAL IONIZATION MASS SPECTROMETRY ISOTOPE DILUTION
