Happy Jack Uraninite: A New Reference Material for High Spatial Resolution Analysis of U‐Rich Matrices

2019 ◽  
Vol 44 (1) ◽  
pp. 125-132
Author(s):  
Corinne Dorais ◽  
Antonio Simonetti ◽  
Loretta Corcoran ◽  
Tyler L. Spano ◽  
Peter C. Burns
Keyword(s):  
Reference Material ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Resolution Analysis

Glucose and Lactate Miniaturized Biosensors for SECM-Based High-Spatial Resolution Analysis: A Comparative Study

ACS Sensors ◽  
2017 ◽  
Vol 2 (9) ◽  
pp. 1310-1318 ◽  
Author(s):  
Alice Soldà ◽  
Giovanni Valenti ◽  
Massimo Marcaccio ◽  
Marco Giorgio ◽  
Pier Giuseppe Pelicci ◽  
...  
Keyword(s):  
Comparative Study ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Resolution Analysis

scholarly journals NanoSIMS and EPMA dating of lunar zirconolite

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Nian Wang ◽  
Qian Mao ◽  
Ting Zhang ◽  
Jialong Hao ◽  
Yangting Lin
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Lunar Meteorite ◽  
Geochemical Study ◽  
Lunar Rocks ◽  
Crater Counting ◽  
Resolution Analysis ◽  
Lunar Mare ◽  
Mare Basalts ◽  
Non Destructive

Abstract Zirconolite is a common Zr-rich accessary mineral in mafic rocks. It is also an ideal U–Pb/Pb–Pb chronometer because it commonly contains high U content (mostly 0.1–10 wt%) and negligible initial Pb. However, zirconolite is usually very small (e.g., ~ 1 μm in width) in lunar rocks, requiring a high spatial resolution analysis. We analyzed a single, large (25 μm × 20 μm) grain of zirconolite in lunar meteorite NWA 4485 using Pb–Pb dating by NanoSIMS and U–Th–Pb dating by EPMA. The resultant U–Th–Pb age is 4540 ± 340 Ma (2σ) with a spatial resolution of 1.3 μm. The Pb–Pb age by NanoSIMS is 4348.5 ± 4.8 Ma (2σ) with a spatial resolution of ~ 2 μm, consistent with the age of 4352 ± 10 Ma and 4344 ± 14 Ma reported in the same meteorite and its paired meteorite NWA 4472. Although U–Th–Pb age is somewhat older, it still includes the NanoSIMS results within the analytical uncertainty. This work demonstrates the potential application of the combined EPMA dating and REE analysis of lunar zirconolite, with the benefits of high spatial resolution, non-destructive, and readily accessibility of the instrument. The precision of the EPMA dating (7.6%, 2σ) can be improved by increasing the counting time for Pb, U and Th. We expect to apply this EPMA technique for a quick and non-destructive age survey and geochemical study of zirconolite grains from the lunar mare basalts newly returned by Chang’E-5 mission which landed on a very young (1.2–2.0 Ga by crater-counting chronology) basalt unit in Procellarum KREEP Terrain.

Nuclear forensic applications involving high spatial resolution analysis of Trinitite cross-sections

2015 ◽  
Vol 306 (2) ◽  
pp. 457-467 ◽  
Author(s):  
Patrick H. Donohue ◽  
Antonio Simonetti ◽  
Elizabeth C. Koeman ◽  
Sara Mana ◽  
Peter C. Burns
Keyword(s):  
Spatial Resolution ◽  
Cross Sections ◽  
High Spatial Resolution ◽  
Resolution Analysis ◽  
Nuclear Forensic

scholarly journals High spatial resolution analysis of the iron oxidation state in silicate glasses using the electron probe

2018 ◽  
Vol 103 (9) ◽  
pp. 1473-1486 ◽  
Author(s):  
Ery C. Hughes ◽  
Ben Buse ◽  
Stuart L. Kearns ◽  
Jon D. Blundy ◽  
Geoff Kilgour ◽  
...  
Keyword(s):  
Oxidation State ◽  
Spatial Resolution ◽  
Electron Probe ◽  
High Spatial Resolution ◽  
Iron Oxidation ◽  
Silicate Glasses ◽  
Iron Oxidation State ◽  
Resolution Analysis

scholarly journals High spatial resolution analysis of ferromanganese concretions by LA-ICP-MS†

2002 ◽  
Vol 3 (1) ◽  
Author(s):  
Mikael D. Axelsson ◽  
Ilia Rodushkin ◽  
Douglas C. Baxter ◽  
Johan Ingri ◽  
Björn Öhlander
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Icp Ms ◽  
Resolution Analysis
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