Images of grains of interest were used to guide LA-ICP-MS
The distribution of elements of interest across a section of a micropore in impregnated samples was measured by LA-ICP-MS
and compared with XANES and XAFS data of the same section.
A total of 438 archaeological obsidian specimens were analyzed by either PXRF (436) or LA-ICP-MS
(95), and are listed in Table 1.
results, strontium (determined by XRF on the same disks) was used as the internal standard.
In this contribution we present new U-Pb LA-ICP-MS
zircon geochronology data and geochemistry reconnaissance from the Mocoa Batholith and Saldana Formation in southern Colombia.
is a well-established and frequently used method in the geosciences for measuring in situ uranium-lead (U-Pb) ages of zircon (e.
Ages were obtained using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS
) following the acquisition of backscattered electron maps to characterize grain zoning and guide LA-ICP-MS
Fifteen zircon grains analyzed by LA-ICP-MS
yielded overlapping concordant analyses, from which a weighted average of the [sup.
Twenty-nine source samples were analysed using EDXA-SEM and LA-ICP-MS
with a focus on detecting possible intrasource variation.
Hanco) Zwaan (Netherlands Gemmological Laboratory, Leiden) and co-authors performed inclusion and LA-ICP-MS
trace-element studies of alluvial sapphires from Montana, USA.
Los metodos analiticos utilizados en el estudio de las muestras colectadas en el marco del presente trabajo, fueron fundamentalmente los siguientes: (a) microscopia optica; (b) Difraccion de Rayos X (DRX); (c) ensayos mediante el uso de un Analizador Portatil Infrarrojo de Minerales (PIMA: Portable Infrared Mineral Analyzer); (d) geoquimica de elementos mayores menores y trazas (MMT; whole-rock geochemisty) y (d) geocronologia U-Pb en circones mediante la tecnica LA-ICP-MS
(Laser Ablation--Inductively Coupled Plasma--MassSpectrometry).