HIGH-SPATIAL-RESOLUTION MEASUREMENT OF O-ISOTOPE RATIOS IN SILICATES AND CARBONATES BY ION MICROPROBE

Authors
RICIPUTI LR PATERSON BA
Citation
Lr. Riciputi et Ba. Paterson, HIGH-SPATIAL-RESOLUTION MEASUREMENT OF O-ISOTOPE RATIOS IN SILICATES AND CARBONATES BY ION MICROPROBE, The American mineralogist, 79(11-12), 1994, pp. 1227-1230
Citations number
14
Categorie Soggetti
Geology,Mineralogy
Journal title
The American mineralogist → ACNP
ISSN journal
0003004X
Volume
79
Issue
11-12
Year of publication
1994
Pages
1227 - 1230
Database
ISI
SICI code
0003-004X(1994)79:11-12<1227:HMOORI>2.0.ZU;2-1
Abstract
A Cameca 4f ion microprobe has been used for the in-situ, high spatial -resolution analysis (< 30 mum) of delta O-18 in silicate and carbonat e minerals. External reproducibility is consistently similar to that p redicted by counting statistics (currently +/-0.6 parts per thousand 1 sigma). General correlations between instrumental mass bias and chemic al composition are observed. However, instrumental mass bias is minera l specific, and simple chemical models cannot be used to predict instr umental fractionation.