Combined Focused Ion Beam – Scanning Electron Microscope and Synchrotron X-ray Fluorescence analysis of multi-solid and melt inclusions from the super-giant Grasberg Cu Au deposit, Indonesia

Zhou, Li; Mernagh, Terrence P.; Li, Yang; Mo, Bing; Lin, Xiaotong; Zhang, Lili; Li, Aiguo; Leys, Clyde

doi:10.1016/j.gexplo.2022.107108

Cited by 3 publications

(3 citation statements)

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“…34 Similarly, most studied inclusions in the literature are assumed to be close to a spherical shape, calculating the mean of the two visible axes should give a reliable result. 19,35 However, none of these assumptions can replace the exact measurement of the horizontal size of an inclusion exposed either by grinding and polishing 36 or by FIB-SEM (e.g., previous works 18,[37][38][39][40] ). In our study, we corrected the Z dimensions (i.e., the thickness of the slices) of the mapped inclusions on the 3D Raman models based on complementary FIB-SEM analyses (Table 1).…”

Section: Geometrical Correction Of the Raman Mapsmentioning

confidence: 99%

“…In addition, as a complementary tool to Raman microspectroscopy, it can provide reliable volumetric data in more simple inclusions, for example, in the case of shrinkage bubbles of melt inclusions 16 . X‐ray fluorescence (XRF) methods can be also used for direct chemical analyses of phases inside fluid and melt inclusions 17,18 . Synchrotron radiation‐induced XRF measurements are however not easily accessible, self‐absorption of the host minerals hinders the quality of the measurements, and it needs complementary analyses like X‐ray tomography, to be able to choose the best 2D slices of interest 14 …”

Section: Introductionmentioning

confidence: 99%

“…16 X-ray fluorescence (XRF) methods can be also used for direct chemical analyses of phases inside fluid and melt inclusions. 17,18 Synchrotron radiationinduced XRF measurements are however not easily accessible, self-absorption of the host minerals hinders the quality of the measurements, and it needs complementary analyses like X-ray tomography, to be able to choose the best 2D slices of interest. 14 One of the most important advantages of 3D Raman mapping of fluid and melt inclusions is to offer the detection and distribution of the small phases (<1 μm), which would likely be overlooked because their size hinders their optical observation.…”

Section: Introductionmentioning

confidence: 99%

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3D Raman mapping combined with FIB‐SEM on multiphase fluid inclusions: A tool to unravel complex phase assemblages

Aradi

Spránitz

Myovela

et al. 2023

J Raman Spectroscopy

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In this study, we performed high resolution 3D Raman mapping on primary multiphase fluid inclusions from a granulite and an eclogite of the Cabo Ortegal Complex (NW Spain), the latter representing a former subduction zone environment. Several microns‐sized inclusions are great targets to test the advantages and limitations of 3D Raman mapping. We show how optical and Raman scattering properties of the phases inside the inclusions can affect the veracity of both 2D and 3D Raman maps. As an independent control, 3D Raman models were compared with focused ion beam‐scanning electron microscopy submicron‐scale slicing of three previously 3D Raman mapped inclusions, allowing us to optimize Raman spectroscopy data evaluation and provide volume proportion calculations. We found that a non‐optimized evaluation procedure might result in even an order of magnitude over‐ or underestimation of phase volume properties. We propose that correcting the Raman maps even with empirically determined Raman cross sections of the phases inside the inclusions can vastly improve the quality of the maps. The results provide valuable input data for thermodynamic modeling and draw implications for fluid/rock interactions.

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Section: Geometrical Correction Of the Raman Mapsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Raman mapping combined with FIB‐SEM on multiphase fluid inclusions: A tool to unravel complex phase assemblages

Aradi

Spránitz

Myovela

et al. 2023

J Raman Spectroscopy

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Fluid evolution of the Lindero porphyry gold deposit, NW Argentina: the critical role of salt melts in ore formation

Simόn,

Koděra,

Lüders

et al. 2024

Miner Deposita

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Non-Contact Multiple-Frequency AC Impedance Instrument for Cement Hydration Based on a High-Frequency Weak Current Sensor

Wang

Tang

et al. 2023

Actuators

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This paper presents a new non-contact alternating current impedance instrument (NCACII) with multiple frequencies to measure the electrical impedance during the hydration of cement-based materials. It implements two measurement techniques: the first technique is a frequency conversion measurement with a frequency variation range of 1–100 kHz. The second is to measure the variation in impedance with time. It provides a new way to analyze the pore structure of cement-based materials. In this instrument, we design a current sensor made from nanocrystalline T37. The experimental results demonstrate the detection accuracy of NCACII has been improved and indicates the superiority of nanocrystalline T37.

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Combined Focused Ion Beam – Scanning Electron Microscope and Synchrotron X-ray Fluorescence analysis of multi-solid and melt inclusions from the super-giant Grasberg Cu Au deposit, Indonesia

Cited by 3 publications

References 50 publications

3D Raman mapping combined with FIB‐SEM on multiphase fluid inclusions: A tool to unravel complex phase assemblages

3D Raman mapping combined with FIB‐SEM on multiphase fluid inclusions: A tool to unravel complex phase assemblages

Fluid evolution of the Lindero porphyry gold deposit, NW Argentina: the critical role of salt melts in ore formation

Non-Contact Multiple-Frequency AC Impedance Instrument for Cement Hydration Based on a High-Frequency Weak Current Sensor

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