Lab. Head: Prof. Maria Luce Frezzotti (email@example.com)
Location: U3 building, floor -2, room 2140
Raman spectrometer Horiba Jobin Yvon LabRAM HR Evolution. The system is equipped with an Olympus BXFM microscope for petrographic observations in transmitted and reflected light, connected to a 5Mpx camera (objectives: 5X, 10X, LWD 50X e 100X, spot of about 1 µm). The presence of a motorized sample holder and of a confocal system allows the acquisition of profiles and bi- and tri-dimensional maps. The stage is compatible with a LINKAM THMS600 heating/freezing system for fluid inclusions studies.
The spectrometer has focal distance of 800 mm, it is provided with a green Nd laser (532 nm, 300mW power), two diffraction gratings (1800 and 600 grooves/mm), and a CCD detector (1024 x 256 px, -60°C). It is also provided with a nine heels filters system (100%, 50%, 25%, 10%, 5%, 3%, 1%, 0,1% e 0,01%), combined with EDGE and ULF (Ultra Low Frequency) filters.
The system is connected with a PC station provided with the Labspec 6 software in Windows 10 environment.
Analyses of Raman spectra on natural samples and thin/thick double polished sections. Acquisition of 2D and 3D maps, and spectral profiles.
For the cost of the laboratory analyses consult the price list (ZA - Microspettroscopia Raman).
Schematic representation of the project strategy: five Research Units (RU) are involved and organised in three working packages. Image from https://prin2017.wixsite.com/connectforcarbon/strategy site.
Figures by Frezzotti (2019; Nature Geosciences). a- Distribution of fluid inclusions in garnet cores (grt; blue dotted line). b- Aqueous fluid inclusions containing diamond (dmd), Mg-calcite (Mg-cc), and rutile (rt). c- Schematic formation pathway for diamonds from dissolved organic and inorganic carbon compounds in deep hydrous fluids.