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Mineral inclusions in Brazilian diamonds
Physics and Chemistry of the Earth, 1975Abstract Minerals included in diamonds from several localities in Brazil have been examined. The minerals observed are olivine, enstatite, chrome-pyrope and pyrope-almandine. These minerals have similar compositions to those previously reported for inclusions from other worldwide localities. In addition rutile, ilmenite, zircon, quartz and pyrrhotite
Henry O.A. Meyer, Darcy P. Svisero
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2020
Fluid inclusions are minute samples of fluids trapped in mineral cavities, which are generally smaller than 100 µm in diameter. Fluid inclusions in the mm-range are rather rare. The fluids were trapped during the growth or recrystallisation of the host mineral at a certain event in the geological history of the host rock.
Martin Okrusch, Hartwig E. Frimmel
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Fluid inclusions are minute samples of fluids trapped in mineral cavities, which are generally smaller than 100 µm in diameter. Fluid inclusions in the mm-range are rather rare. The fluids were trapped during the growth or recrystallisation of the host mineral at a certain event in the geological history of the host rock.
Martin Okrusch, Hartwig E. Frimmel
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P–V–T relationships and mineral equilibria in inclusions in minerals
Earth and Planetary Science Letters, 2006Abstract When a mineral is included in another, the pressure on the two is the same. As pressure and temperature then change, the pressure on the inclusion is likely to become increasingly different to the pressure on its host as a consequence of the two minerals having different equations of state (i.e.
Michel Guiraud, Roger Powell
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Inclusion shape, mineral texture and liberation
International Journal of Mineral Processing, 1989Abstract The effect of an ore's texture on liberation was explored using simplified texture models composed by a continuous phase and an inclusional phase with different geometric aspects of the inclusions. Unexpectedly, a parameter called the “textural rank” was developed that may be useful for a quantitative characterization of the rock's textures.
Thomas P. Meloy, Ugo Preti, G. Ferrara
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Mineral Inclusions in Diamond: Temperature and Pressure of Equilibration
Science, 1976Two distinct suites of minerals included in natural diamond occur and probably represent different physical and chemical conditions during diamond growth. Minerals of the ultramafic suite appear to have equilibrated in the range 1000° to 1300°C between 45 and 65 kilobars, whereas the temperature range for minerals of the eclogitic suite is 850° to 1250°
Hsiao-Ming Tsai, Henry O.A. Meyer
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Elements of Eoarchean life trapped in mineral inclusions
Nature, 2017Metasedimentary rocks from Isua, West Greenland (over 3,700 million years old) contain 13C-depleted carbonaceous compounds, with isotopic ratios that are compatible with a biogenic origin. Metamorphic garnet crystals in these rocks contain trails of carbonaceous inclusions that are contiguous with carbon-rich sedimentary beds in the host rock, where ...
Hassenkam, Tue +4 more
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Inclusions in cassiterite and associated minerals
Economic Geology, 1960A study was made of the inclusions in 133 specimens of cassiterite and associated minerals from world wide Sn deposits. From the distribution of inclusion types, it would appear that most pegmatitic Sn deposits have been formed from siliceous melts, but that most other types of deposits have been formed from aqueous solutions.
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Fluid inclusions in fluorite mineralizations of northwestern Sicily, Italy
Chemical Geology, 1987Abstract Several fluorite ± barite mineralizations, mainly controlled by post-Pliocene disjunctive faults, occur in silicified and altered Mesozoic limestones in the area of Termini Imerese (NW Sicily). In this study, we examined fluid inclusions in fluorite from the localities of Rocca Grande and Poggio Balate.
BELLANCA A +4 more
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Introduction to Minerals, Inclusions and Volcanic Processes
Reviews in Mineralogy and Geochemistry, 2008Minerals are intrinsically resistant to the processes that homogenize silicate liquids—their compositions thus yield an archive of volcanic and magmatic processes that are invisible at the whole rock scale. Minerals and their inclusions record diverse magma compositions, the depths and temperatures of magma storage, the nature of open system processes,
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Short-chain carboxylates in fluid inclusions in minerals
Applied Geochemistry, 2000Abstract The carboxylate (formate, acetate, propionate and oxalate) and common inorganic anions (F − , Cl − and SO 2− 4 ) compositions for aqueous fluid inclusion leachates from 17 mineral samples collected from various deposits have been determined using ion chromatography in conjunction with microthermometric measurements on the fluid inclusions ...
Yishan Zeng, Jiaqi Liu
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