Synthetic H sub 2 O-CO sub 2 fluid inclusions in spontaneously nucleated forsterite, enstatite, and diopside hosts: The method and applications

Journal Article · Mon Apr 01 00:00:00 EST 1991 · Geochimica et Cosmochimica Acta; (USA)

DOI:https://doi.org/10.1016/0016-7037(91)90161-W· OSTI ID:5668395

Johnson, E L ^[1]; Jenkins, D M ^[2]

---

1. Princeton Univ., NJ (USA)
2. The State Univ. of New York at Binghamton (USA)

This paper describes an experimental technique for the production of primary synthetic H{sub 2}O-CO{sub 2} and H{sub 2}O-CO{sub 2}-NaCl fluid inclusions in forsterite, orthopyroxene, and clinopyroxene hosts spontaneously nucleated during the incongruent dissolution of tremolite. The host producing reactions involve the complexation and transport of Ca, Mg, and SiO{sub 2} to the growing product phases in which the inclusions are hosted. This technique, therefore, provides the opportunity to study the effects of a complex host-producing reaction on the composition of the fluids trapped as primary inclusions in the growing host phase. In addition to providing a model for the entrapment of primary fluid inclusions, the reactions provide an excellent model of the onset of granulite facies metamorphism where, in nature, fluid inclusion compositions are commonly in disequilibrium with the mineral assemblages in which they are hosted.

• OSTI ID: 5668395
• Journal Information: Geochimica et Cosmochimica Acta; (USA), Vol. 55:4; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
DIOPSIDE
CRYSTALLIZATION
GEOCHEMISTRY
ENSTATITE
GRANULITES
PETROGENESIS
OLIVINE
CHEMICAL REACTIONS
CRYSTAL GROWTH
INCLUSIONS
METAMORPHISM
MINERALIZATION
NUCLEATION
ORIGIN
ALKALINE EARTH METAL COMPOUNDS
CHEMISTRY
IRON COMPOUNDS
IRON SILICATES
MAGNESIUM COMPOUNDS
MAGNESIUM SILICATES
METAMORPHIC ROCKS
MINERALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PYROXENES
ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
580000* - Geosciences