EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Latourrette et al. 1995
Latourrette, T., Hervig, R.L. and Holloway, J.R. (1995). Trace-Element Partitioning between Amphibole, Phlogopite, and Basanite Melt. Earth and Planetary Science Letters 135(1-4): 13-30. doi: 10.1016/0012-821X(95)00146-4.
We have measured amphibole-melt and phlogopite-melt partition coefficients (D) for 22 trace elements in experimentally crystallized natural basanites with the ion microprobe, The synthesized phases display an exceptional degree of homogeneity for both major and trace elements, as demonstrated by the ratio of the standard deviation to the mean counting statistics uncertainty of the measurements, In pargasitic hornblende, actinides are highly incompatible (D = 0.001), LILE and HFSE are mildly incompatible(D = 0.04-0.2 and 0.1-0.2, respectively); and REE partition coefficients vary from 0.05 to 0.6, with a maximum near Ho. Except for the LILE(D = 0.1-3.7), phlogopite partition coefficients are generally lower, especially the REE (D approximate to 0.01). The partitioning results are consistent with a model in which the variation in partition coefficient with ionic radius results from the crystal lattice strain induced by the size misfit of the substituting trace element, This result predicts a decrease in Young's Modulus (E) with increasing size of the cation sites in the crystal lattice, and E derived for the largest site in both amphibole and phlogopite agree well with experimentally determined bulk mineral values, The ability to model partitioning with an elastic strain model provides an important link between trace element partitioning and the macroscopic properties of minerals, Relative to an anhydrous peridotite, partial melting of an amphibole or phlogopite bearing peridotite will result in no Th-U fractionation, slight LILE depletions, and, aside from Ti, no significant HFSE depletions. Thus, barring the addition of any slab components besides H2O, partial melting of hydrated peridotite is not a plausible explanation for any of the geochemical features commonly associated with subduction zone magmas.
DATABASE QUICK LINKS

Kd's Database

BACKGROUND DATA FILES

Abstract

Table 1
Table 2
Table 3
Table 4

Experimental
Analysis

Keywords
rare-earth elements, upper-mantle, high-pressure, crystal, liquid, differentiation, clinopyroxene, metasomatism, coefficients, constraints
Journal
Earth and Planetary Science Letters
http://www.elsevier.com/wps/product/cws_home/503328
Publisher
Elsevier Science
P.O. Box 211
1000 AE Amsterdam
The Netherlands
(+31) 20 485 3757
(+31) 20 485 3432
nlinfo-f@elsevier.com
Click to clear formClick to return to previous pageClick to submit