Mobility and H 2 O loss from fluid inclusions in natural quartz crystals

1999 ◽  
Vol 137 (1-2) ◽  
pp. 1-14 ◽  
Author(s):  
Andreas Aud�tat ◽  
Detlef G�nther
2006 ◽  
Vol 70 (18) ◽  
pp. A298 ◽  
Author(s):  
A.-L. Jourdan ◽  
T.W. Vennemann ◽  
J. Mullis ◽  
K. Ramseyer

1950 ◽  
Vol 58 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Stephen Taber

1991 ◽  
Vol 251 ◽  
Author(s):  
F. C. Luan ◽  
M. S. Paterson

ABSTRACTIn 1965 Griggs and Blacic [1,2] proposed that there is a “hydrolytic weakening” process in quartz and silicates whereby the breaking of Si-O bonds, involved in the movement of dislocations, is facilitated by the presence of water. This proposal aimed to explain the observed dramatic weakening of quartz crystals when they are exposed to water in tests at high temperature, as well as the observed strong contrast in creep strength between dry natural quartz crystals and rapidly-grown synthetic quartz crystals containing traces of water. Such a “hydrolytic” process may also underlie the observed effects of water in accelerating other phenomena such as self-diffusion of oxygen in quartz, aluminium-silicon ordering in feldspars, slow crack propagation in silicates, and recrystallization in quartz. A review of this field is given in Reference 3.


1988 ◽  
Vol 5 ◽  
pp. 1-93
Author(s):  
Johannes Fabricius

Parageneseprojektets formål var at forbedre indsigten i relationerne mellem på den ene side Zechstein saltbjergarternes, specielt K-Mg bjergarternes, kemiske og mineralogiske sammensætning og på den anden side de temperatur- og trykforhold, som findes i saltforekomsterne. Som følge af den begrænsede rådige tid i forbindelse med visse tidsrøvende vanskeligheder under opbygningen og driften af autoklavelinien, blev det besluttet at gennemføre undersøgelserne på salt med dissemineret carnallit fra boringen E+slev-1. Undersøgelserne blev udført som en termometrisk undersøgelse af det system i indeslutninger indfanget kombination af 1. Mikronaturlige Na-K-Mg-Cl-H20 af kvartskrystaller, der krystalliserede i saltet i perioden mellem trias - nedre kridt, og 2. Autoklaveundersøgelse af saltmineralet carnallits barotermale stabilitetsforhold. Da det viste sig, at saltet i kerne 30 fra boringen Erslev-1 var bedst egnet til ovennævnte parallelt løbende undersøgelser, blev hovedvægten lagt på dette salt. Delresultater er blevet publiceret, medens projektet stod på: Fabricius, J., 1984: The thermal stability of natural carnallite in cognate geological environments. DGU Serie c. Nr. 1, IV. 63-83. Fabricius, J., 1987a: Natural Na-K-Mg-Cl solutions and solid derivatives trapped in euhdral quartz from Danish Zechstein salt. Chem. Geol. 61, 95-112. Fabricius, J., 1987b: Geochemical investigation. of potassium- magnesium chloride mineralization of Zechstein 2 salt, Mors Dame, Danmark. Microthermometry on solid inclusions in quartz crystals. DGU Serie A. Nr. 19. 48 pp. Fabricius, J. and Rose-Hansen, J., 1987: Pressure-dependent melting curve of natural carnalli te, KMgCl3 • 6H2O, in a closed system, where evaporation is prevented. Bidrag til IX Symposium on Fluid Inclusions, Oporto. Nærværende tekst er et oversat uddrag af ovenstående publikationer. For at fremme læseligheden og overskueligheden er referencer udeladt. De i publikationerne anvendte referencer fremgår af litteraturlisten, Appendix II.


1990 ◽  
Vol 54 (375) ◽  
pp. 195-205 ◽  
Author(s):  
T. H. Hansteen ◽  
W. J. Lustenhouwer

AbstractThe mildy peralkaline Eikeren-Skrim granite belongs to the Permian magmatic province of the Oslo rift, south-east Norway. Euhedral quartz crystals from the abundant miarolitic cavities contain primary inclusions of partly crytallized silicate melts and coexisting primary, aqueous fluid inclusions. Micro-thermometric measurements give maximum estimates for the granite solidus of 685–705°C. Quenched silicate melt inclusions are not peralkaline, have normative Or/Ab weight ratios of 1.15–1.44 (compared to 0.49–0.80 in whole-rock samples) and F and Cl contents of 0.1 and 0.21–0.65 wt. %, respectively. Coexisting magmatic fluid inclusions are highly enriched in Na, Cl, S and to some extent K. These chemical characteristics are the results of late-magmatic melt-mineral-fluid interaction in the miarolitic cavities.


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