A qualitative account of all the minerals founded in an ignimbrite with benmoreite chemistry of Reunion Island has been drawn up by ion microanalyser. The electron microprobe has specified their composition. Two pyroxenes with a high calcium content (salite and hedenbergite) coexist with an hour-glass zoned anorthoclase. On another hand, quantitative analyses have been performed for the first time, by means of the ion microanalyser on salite, anorthoclase and mesostase of matrix or fiammes.Dans une ignimbrite à chimisme de benmoréite de la Réunion, un bilan qualitatif des minéraux présents a été dressé par l'analyseur ionique. La microsonde électronique a précisé leur composition. Deux pyroxènes riches en calcium, une salite et une hédenbe...
Nous présentons une méthode d'analyse quantitative par émission ionique secondaire qui est nouvelle,...
A lead rich microlite has been found in alluvial sands in the Kivu, Congo. This mineral is associat...
L'analyse de thortveitites d'Iveland et de Befanamo à la microsonde électronique donne une compositi...
A qualitative account of all the minerals founded in an ignimbrite with benmoreite chemistry of Reun...
The ion microanalyzer has been used to obtain images of the distribution of elements on a polished s...
The ion microanalyzer has been used to obtain images of the distribution of elements on a polished s...
The study of solid inclusions within phenocrysts requires in situ analysis. The mass spectra obtaine...
The study of solid inclusions within phenocrysts requires in situ analysis. The mass spectra obtaine...
La présence, dans un échantillon de sol, de minéraux dont la composition chimique est mal connue ren...
In an alkali basalt from the cheire d'Aydat (Chaîne des Puys, French Massif central), Na and K are l...
In an alkali basalt from the cheire d'Aydat (Chaîne des Puys, French Massif central), Na and K are l...
A petrographic and petrological analysis has been made on samples from a small minette sill from Sis...
New possibilities have been opened in the field of Earth Sciences by the development of modern techn...
New possibilities have been opened in the field of Earth Sciences by the development of modern techn...
A lead rich microlite has been found in alluvial sands in the Kivu, Congo. This mineral is associat...
Nous présentons une méthode d'analyse quantitative par émission ionique secondaire qui est nouvelle,...
A lead rich microlite has been found in alluvial sands in the Kivu, Congo. This mineral is associat...
L'analyse de thortveitites d'Iveland et de Befanamo à la microsonde électronique donne une compositi...
A qualitative account of all the minerals founded in an ignimbrite with benmoreite chemistry of Reun...
The ion microanalyzer has been used to obtain images of the distribution of elements on a polished s...
The ion microanalyzer has been used to obtain images of the distribution of elements on a polished s...
The study of solid inclusions within phenocrysts requires in situ analysis. The mass spectra obtaine...
The study of solid inclusions within phenocrysts requires in situ analysis. The mass spectra obtaine...
La présence, dans un échantillon de sol, de minéraux dont la composition chimique est mal connue ren...
In an alkali basalt from the cheire d'Aydat (Chaîne des Puys, French Massif central), Na and K are l...
In an alkali basalt from the cheire d'Aydat (Chaîne des Puys, French Massif central), Na and K are l...
A petrographic and petrological analysis has been made on samples from a small minette sill from Sis...
New possibilities have been opened in the field of Earth Sciences by the development of modern techn...
New possibilities have been opened in the field of Earth Sciences by the development of modern techn...
A lead rich microlite has been found in alluvial sands in the Kivu, Congo. This mineral is associat...
Nous présentons une méthode d'analyse quantitative par émission ionique secondaire qui est nouvelle,...
A lead rich microlite has been found in alluvial sands in the Kivu, Congo. This mineral is associat...
L'analyse de thortveitites d'Iveland et de Befanamo à la microsonde électronique donne une compositi...