Vibrational spectroscopy of fossils

A Olcott Marshall, CP Marshall - Palaeontology, 2015 - Wiley Online Library
Over the last two decades, there has an been increasing interest in applying vibrational
spectroscopy in palaeontological research. For example, this chemical analytical technique …

Investigation on the role of microorganisms in manganese mineralization from Abadeh-Tashk area, Fars Province, southwestern Iran by using petrographic and …

MA Rajabzadeh, F Haddad, M Polgári, K Fintor… - Ore Geology …, 2017 - Elsevier
Hydrothermal manganese and ferromanganese deposits associated with Neyriz ophiolite
colored mélange occurred as small ore deposits in the Abadeh-Tashk area, SE of Fars …

Structural characterization by Raman hyperspectral mapping of organic carbon in the 3.46 billion-year-old Apex chert, Western Australia

MC Sforna, MA Van Zuilen, P Philippot - Geochimica et Cosmochimica Acta, 2014 - Elsevier
The 3.46 billion years old Apex Chert, Pilbara Craton, Western Australia, is well-known for
hosting the oldest, highly disputed microfossils on Earth. This rock has a complex history of …

Ultrastructural heterogeneity of carbonaceous material in ancient cherts: investigating biosignature origin and preservation

Y Qu, A Engdahl, S Zhu, V Vajda, N McLoughlin - Astrobiology, 2015 - liebertpub.com
Opaline silica deposits on Mars may be good target sites where organic biosignatures could
be preserved. Potential analogues on Earth are provided by ancient cherts containing …

Thermally induced phase transition of troilite during Micro-Raman spectroscopy analysis

X Li, Y Chen, X Tang, L Gu, J Yuan, W Su, H Tian… - Icarus, 2023 - Elsevier
Troilite is one type of FeS polymorph formed under reducing environmental conditions.
However, its phase transition by laser heating during Raman analysis has not been …

Flame synthesis of gamma-iron-oxide (γ-Fe2O3) nanocrystal films and carbon nanotubes on stainless-steel substrates

H Hong, NK Memon, Z Dong, BH Kear… - Proceedings of the …, 2019 - Elsevier
Using a rapid, open-atmosphere flame synthesis technique, iron-oxide nanoparticles (α-Fe 2
O 3) and nanocrystals (γ-Fe 2 O 3) and carbon nanotubes (CNTs) are grown directly on …

Introduction to optical characterization of materials

JANT Soares - Practical Materials Characterization, 2014 - Springer
Have you ever seen the colors dancing on the surface of a soap bubble? Or the red glow of
a hot object? Have admired the iridescent colors on the wings of a butterfly? Or noticed the …

Raman hyperspectral imaging of microfossils: potential pitfalls

CP Marshall, A Olcott Marshall - Astrobiology, 2013 - liebertpub.com
Initially, Raman spectroscopy was a specialized technique used by vibrational
spectroscopists; however, due to rapid advancements in instrumentation and imaging …

Effects of pulsed laser and plasma interaction on Fe, Ni, Ti, and their oxides for LIBS Raman analysis in extraterrestrial environments

S Schröder, K Rammelkamp, F Hanke… - Journal of Raman …, 2020 - Wiley Online Library
Laser‐induced breakdown spectroscopy (LIBS) and Raman spectroscopy have a high
potential for in situ geochemical and mineralogical analyses for planetary exploration, in …

Spatial and spectral resolution of carbonaceous material from hematite (α-Fe 2 O 3) using multivariate curve resolution-alternating least squares (MCR-ALS) with …

JP Smith, FC Smith, KS Booksh - Analyst, 2017 - pubs.rsc.org
The search for evidence of extant or past life on Mars is a primary objective of both the
upcoming Mars 2020 rover (NASA) and ExoMars 2020 rover (ESA/Roscosmos) missions …