Fluid inclusion analyses

Deloule, E., 1982, The genesis of fluorspar hydrothermal deposits at Montroc and Le Bure, The Tam, as deduced from fluid inclusion analysis. Economic Geology, 77,1867-1874. 

Banks, D.A., Davies, G.R., Yardley, B.W.D., McCaig, A.M. and N.T. Grant, 1991. The chemistry of brines from an Alpine thrust system in the Central Pyrenees An application of fluid inclusion analysis to the study of fluid behaviour in orogenesis. Geochimica et Cosmochimica Acta, Vol. 55, pp. 1021-1030... 

Fluid inclusion analysis was performed on 100 p.m thick rock slices polished on both sides, using a Linkam semi-automatic freezing-heating stage. The reproducibility of temperature measurements on standards is 0.2°C. 

Ankerite cement is very scarce in the Oseberg reservoir, except in one sample located at the boundary with the underlying shales. In this sample, fluid inclusion analysis indicates that ankerite formed at temperatures of 70-80 °C, i.e. during the latest Cretaceous or Early Tertiary. The Sr/ Sr ratios and REE patterns of ankerite are consistent with a significant influence of fluids and/or trace elements derived from shales. The 5 0 values indicate a marked contribution of meteoric water during ankerite formation. Ankerite from the fault zone and from the structural blocks have similar 5 0-5 C values, suggesting similar conditions of formation. 

The amount and quality of information in these studies varies greatly and only a few of the more recent papers applied a combination of several different methods to decipher the origin of saddle dolomite. We scanned published work for the following information on saddle dolomite occurrences optical mineralogy, cathodoluminescence (CL) characteristics, elemental composition, carbon, oxygen and strontium isotopic compositions, and fluid inclusion analysis. In the following sections we shall address these types of data in detail. 

Analyses of fluid inclusions in saddle dolomite were first reported for the Pine Point lead-zinc deposit in western Canada (Roedder, 1968), but it was not until the late 1980s that fluid-inclusion analysis was widely applied to the study of carbonate cements. 

Microthermometry Fluid inclusion analysis that involves the heating and cooling of samples to determine the temperature of phase changes. 

Burruss, R.C. (2003) Petroleum fluid inclusions, an introduction. In Fluid Inclusions Analysis and Interpretation, edited by Samson, I., Anderson, A., Marshall, D. Quebec Mineralogical Association of Canada, Short Course Series, pp. 159-174. 

Gunther, D. (2001) Quantitative fluid inclusion analysis using a 193 nmexcimer laser-ablation system coupled to ICP-MS. In Laser-Ablation-ICPMS in the Earth Sciences Principles and Applications (ed. P. Sylvesta-), Minraalogical Association of Canada, Ottawa, p. 243. 

The quantitative imaging capability of the NMP is one of the major strengtiis of the teclmique. The advanced state of the databases available for PIXE [21, 22 and 23] allows also for the analysis of layered samples as, for example, in studying non-destmctively the elemental composition of fluid inclusions in geological samples. 

The Special Issue of Resource Geology on the Hishikari deposits (Shikazono et al., 1993) includes various aspects of the Hishikari deposits (oxygen isotopes of gangue minerals, hydrothermal alteration, precipitation sequence, fluid inclusions, vertical electric profiling and electric sounding surveys, structural geological analysis, opaque minerals. 

Table 22.1. Composition of ore-forming fluids at the Albigeois district, as determined by analysis of fluid inclusions (Deloule, 1982)...

In the study of minerals and other geological materials, Raman spectroscopy has been applied for chemical analysis and in studies of molecular and crystal structure, and of elastic and thermodynamic properties. A particularly important field for the application of Raman spectroscopy in chemical analysis is in the study of fluid inclusions in minerals, where the Raman microprobe has been developed to enable nondestructive in... 

Rosasco, G. J., and E. Roedder (1979). Application of a new Raman microprobe spectrometer to nondestructive analysis of sulfate and other ions in individual phases in fluid inclusions in minerals. Geochim. Cosmochim. Acta 43, 1907-15. 

Munoz M., Boyce A. L, Courjault-Rade P., Fallick A. E., and Tohon E. (1991) Continental basinal origin of ore veins from southwestern Massif Central fluorite veins (Albigeois, Erance) evidence for fluid inclusion and stable isotope analysis. Appl. Geochem. 14, 447-458. 

Irwin J. J. and Reynolds J. H. (1995) Multiple stages of fluid trapping in the Stripa granite indicated by laser microprobe analysis of Cl, Be, I, K, U, and nucleogenic Ar, Kr, and Xe in fluid inclusions. Geochim. Cosmochim. Acta 59, 355-369. 

Lazar B. and Holland H. D. (1988) The analysis of fluid inclusions in halite. Geochim. Cosmochim. Acta 52, 485-490. 

Jones D. and Macleod G. (2000) Molecular analysis of petroleum in fluid inclusions a practical methodology. Org. Geochem. 31, 1163-1173. 

The identification of paleo anomalies in heat flow and geothermal gradients supports the identification of former hydrodynamic and migration conditions in a basin. Information on paleotemperatures can be derived from fluid inclusion data (Roedder, 1984), apatite fission track analysis, biomarkers and vitrinite reflectance data (Allen and Allen, 1990 Naeser and McCulloh, 1989). 

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