Browsing Geochemie, Mineralogie, Petrologie by Contributor "Pack, Andreas"
Now showing items 1-4 of 4
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Blaubeuren, Cloppenburg, and Machtenstein—Three recently recognized H‐group chondrite finds in Germany with distinct terrestrial ages and weathering effects
; ; ; ; ; ; ; (Meteoritics & Planetary Science, 2022-01-17)
In the last 7 years, three meteorites (Blaubeuren, Cloppenburg, and Machtenstein) found in Germany were identified as chondrites. Two of these rocks had been recovered from the impact sites decades ago but were not considered ... -
Hf-W chronology of a macrochondrule from the L5/6 chondrite Northwest Africa 8192
; ; ; ; ; Berndt, Jasper; (Meteoritics & Planetary Science, 2020)
A large, igneous-textured, and 2 cm-sized spherical object from the L5/6 chondrite NWA 8192 was investigated for its chemical composition, petrography, O isotopic composition, and Hf-W chronology. The petrography and ... -
The polymict carbonaceous breccia Aguas Zarcas: A potential analog to samples being returned by the OSIRIS‐REx and Hayabusa2 missions
; ; ; ; ; ; ; ; ; Le, Loan; Ito, Motoo; Rahman, Zia (Meteoritics & Planetary Science, 2021-02-02)
On April 23, 2019, a meteorite fall occurred in Aguas Zarcas, Costa Rica. According to the Meteoritical Bulletin, Aguas Zarcas is a brecciated CM2 chondrite dominated by two lithologies. Our X‐ray computed tomography (XCT) ... -
Tourmaline Reference Materials for the In Situ Analysis of Oxygen and Lithium Isotope Ratio Compositions
Wiedenbeck, Michael; Trumbull, Robert B.; Rosner, Martin; Boyce, Adrian; Fournelle, John H.; Franchi, Ian A.; Halama, Ralf; Harris, Chris; Lacey, Jack H.;; Meixner, Anette; ; Pogge von Strandmann, Philip A.E.; Spicuzza, Michael J.; Valley, John W.; Wilke, Franziska D.H. (Geostandards and Geoanalytical Research, 2020-11-07)
Three tourmaline reference materials sourced from the Harvard Mineralogical and Geological Museum (schorl 112566, dravite 108796 and elbaite 98144), which are already widely used for the calibration of in situ boron isotope ...
