Abstract
Aluminum orthoposphate (AlPO4) has polymorphs isostructural with tridymite, cristobalite, and quartz. Berlinite is the low-temperature form that corresponds to α-quartz. We report berlinite-quartz solid solutions to crystallize from a synthetic P-rich peraluminous granitic melt, similar in composition to the most volatile-rich silicate melt inclusions found in pegmatites. The crystallization took place in experiments performed in cold-seal pressure vessels at 450-700 °C and 0.1-0.2 GPa H2O pressure. At these conditions, the berlinite-quartz mutual solubility is limited to 5-7 mol% SiO2 on the phosphate side of the solvus and to the maximum of 1 mol% AlPO4 on the silica-rich side. The mutual solubility appears to decrease with falling temperature. At low T the crystals of berlinitequartz solid solutions are strongly zoned and show complex intergrowths between the P-rich and silica-rich phases. They were studied by electron microprobe, transmission electron microscopy, and Raman spectroscopy. In the light of our new experimental results, the extreme P enrichment reported earlier for some natural quartz-hosted melt inclusions may be explained as a post-entrapment contamination by the berlinite-bearing host.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Partial equilibrium of radiogenic and stable isotope systems in garnet peridotite during ultrahigh-pressure metamorphism
- Experimental determination of Au solubility in rhyolite melt and magnetite: Constraints on magmatic Au budgets
- Surface oxidation of chalcocite (Cu2S) under aqueous (pH = 2–11) and ambient atmospheric conditions: Mineralogy from Cu L- and O K-edge X-ray absorption spectroscopy
- Determination of molar absorptivity of IR fundamental OH-stretching vibration in rhyolitic glasses
- The effect of radiation damage on local structure in the crystalline fraction of ZrSiO4: Investigating the 29Si NMR response to pressure in zircon and reidite
- The structural behavior of Al3+ in peralkaline melts and glasses in the system Na2O-Al2O3-SiO2
- Hydromaghemite, an intermediate in the hydrothermal transformation of 2-line ferrihydrite into hematite
- Carbon isotope “stratigraphy” in a single graphite crystal: Implications for the crystal growth mechanism of fluid-deposited graphite
- Woodruffite: A new Mn oxide structure with 3 × 4 tunnels
- Calderonite, a new lead-iron-vanadate of the brackebuschite group
- Low-temperature microdiamond aggregates in the Maksyutov Metamorphic Complex, South Ural Mountains, Russia
- Crystal structure of protoanthophyllite: A new mineral from the Takase ultramafic complex, Japan
- Crystallization of AlPO4-SiO2 solid solutions from granitic melt and implications for P-rich melt inclusions in pegmatitic quartz
- On the formation of peridotite-derived Os-rich PGE alloys
- Viscosity of hydrous rhyolitic melts inferred from kinetic experiments, and a new viscosity model
- Geothermobarometry and U-Pb Geochronology of metapelitic granulites and pelitic migmatites from the Lokoho region, Northern Madagascar
- The aperiodic states of zircon: an ab initio molecular dynamics study
- Cathodoluminescence investigations on the Popigai, Ries, and Lappajärvi impact diamonds
- Isomorphous cation substitution in dioctahedral phyllosilicates by means of ab initio quantum mechanical calculations on clusters
- Alacranite, As8S9: structural study of the holotype and re-assignment of the original chemical formula
- Influence of layer charge on the hydroxyl stretching of trioctahedral clay minerals: A vibrational study of synthetic Na- and K-saponites
- Stacking faults and twin boundaries in sphalerite crystals from the Trepcˇa mines in Kosovo
- Letters. Rock-forming moissanite (natural α-silicon carbide)
- Water solubility in carbonatite melts
- Trace element partitioning between mantle wedge peridotite and hydrous MgO-rich melt
- Rubidium- and cesium-dominant micas in granitic pegmatites
- Nanoscale mineralogy of arsenic in a region of New Hampshire with elevated As-concentrations in the groundwater
- Micro- and nanochemistry of fly ash from a coal-fired power plant
- Thermal behavior of dental enamel and geologic apatite: An infrared spectroscopic study
- Black carbon pollution of speleothems by fine urban aerosols in tourist caves
- Decay-induced biomineralization of the saguaro cactus (Carnegiea gigantea)
- The distribution of zeolites and their effects on the performance of a nuclear waste repository at Yucca Mountain, Nevada, U.S.A.
- Transformation of 2-line ferrihydrite to 6-line ferrihydrite under oxic and anoxic conditions
- Iron-rich precipitates in a mine drainage environment: Influence of pH on mineralogy
- Efflorescent iron sulfate minerals: Paragenesis, relative stability, and environmental impact
- Secondary mineralogy and microtextures of weathered sulfides and manganoan carbonates in mine waste-rock dumps, with implications for heavy-metal fixation
- Acquisition and evaluation of thermodynamic data for morenosite-retgersite equilibria at 0.1 MPa
- On the thermochemistry of the solid solution between jarosite and its chromate analog
- The Composition and Morphology of Amphiboles from the Rainy Creek Complex, Near Libby, Montana
- Composition, Fe3+/ΣFe, and crystal structure of non-asbestiform and asbestiform amphiboles from Libby, Montana, U.S.A.
- A rapid and accurate procedure for the determination of refractive indices of regulated asbestos minerals
- Ferrous saponite from the Deccan Trap, India, and its application in adsorption and reduction of hexavalent chromium
- Nanomorphology of montmorillonite particles: Estimation of the clay edge sorption site density by low-pressure gas adsorption and AFM observations
- Medieval stained glass in a Mediterranean climate: Typology, weathering and glass decay, and associated biomineralization processes and products
- The structure of disordered mackinawite
- The reactivity of seven Mn-oxides with Cr3+aq: A comparative analysis of a complex, environmentally important redox reaction
- Sorption mechanisms of Sr and Pb on zeolitized tuffs from the Nevada test site as a function of pH and ionic strength
- Letters. Tailoring calcite: Nanoscale AFM of coccolith biocrystals
Articles in the same Issue
- Partial equilibrium of radiogenic and stable isotope systems in garnet peridotite during ultrahigh-pressure metamorphism
- Experimental determination of Au solubility in rhyolite melt and magnetite: Constraints on magmatic Au budgets
- Surface oxidation of chalcocite (Cu2S) under aqueous (pH = 2–11) and ambient atmospheric conditions: Mineralogy from Cu L- and O K-edge X-ray absorption spectroscopy
- Determination of molar absorptivity of IR fundamental OH-stretching vibration in rhyolitic glasses
- The effect of radiation damage on local structure in the crystalline fraction of ZrSiO4: Investigating the 29Si NMR response to pressure in zircon and reidite
- The structural behavior of Al3+ in peralkaline melts and glasses in the system Na2O-Al2O3-SiO2
- Hydromaghemite, an intermediate in the hydrothermal transformation of 2-line ferrihydrite into hematite
- Carbon isotope “stratigraphy” in a single graphite crystal: Implications for the crystal growth mechanism of fluid-deposited graphite
- Woodruffite: A new Mn oxide structure with 3 × 4 tunnels
- Calderonite, a new lead-iron-vanadate of the brackebuschite group
- Low-temperature microdiamond aggregates in the Maksyutov Metamorphic Complex, South Ural Mountains, Russia
- Crystal structure of protoanthophyllite: A new mineral from the Takase ultramafic complex, Japan
- Crystallization of AlPO4-SiO2 solid solutions from granitic melt and implications for P-rich melt inclusions in pegmatitic quartz
- On the formation of peridotite-derived Os-rich PGE alloys
- Viscosity of hydrous rhyolitic melts inferred from kinetic experiments, and a new viscosity model
- Geothermobarometry and U-Pb Geochronology of metapelitic granulites and pelitic migmatites from the Lokoho region, Northern Madagascar
- The aperiodic states of zircon: an ab initio molecular dynamics study
- Cathodoluminescence investigations on the Popigai, Ries, and Lappajärvi impact diamonds
- Isomorphous cation substitution in dioctahedral phyllosilicates by means of ab initio quantum mechanical calculations on clusters
- Alacranite, As8S9: structural study of the holotype and re-assignment of the original chemical formula
- Influence of layer charge on the hydroxyl stretching of trioctahedral clay minerals: A vibrational study of synthetic Na- and K-saponites
- Stacking faults and twin boundaries in sphalerite crystals from the Trepcˇa mines in Kosovo
- Letters. Rock-forming moissanite (natural α-silicon carbide)
- Water solubility in carbonatite melts
- Trace element partitioning between mantle wedge peridotite and hydrous MgO-rich melt
- Rubidium- and cesium-dominant micas in granitic pegmatites
- Nanoscale mineralogy of arsenic in a region of New Hampshire with elevated As-concentrations in the groundwater
- Micro- and nanochemistry of fly ash from a coal-fired power plant
- Thermal behavior of dental enamel and geologic apatite: An infrared spectroscopic study
- Black carbon pollution of speleothems by fine urban aerosols in tourist caves
- Decay-induced biomineralization of the saguaro cactus (Carnegiea gigantea)
- The distribution of zeolites and their effects on the performance of a nuclear waste repository at Yucca Mountain, Nevada, U.S.A.
- Transformation of 2-line ferrihydrite to 6-line ferrihydrite under oxic and anoxic conditions
- Iron-rich precipitates in a mine drainage environment: Influence of pH on mineralogy
- Efflorescent iron sulfate minerals: Paragenesis, relative stability, and environmental impact
- Secondary mineralogy and microtextures of weathered sulfides and manganoan carbonates in mine waste-rock dumps, with implications for heavy-metal fixation
- Acquisition and evaluation of thermodynamic data for morenosite-retgersite equilibria at 0.1 MPa
- On the thermochemistry of the solid solution between jarosite and its chromate analog
- The Composition and Morphology of Amphiboles from the Rainy Creek Complex, Near Libby, Montana
- Composition, Fe3+/ΣFe, and crystal structure of non-asbestiform and asbestiform amphiboles from Libby, Montana, U.S.A.
- A rapid and accurate procedure for the determination of refractive indices of regulated asbestos minerals
- Ferrous saponite from the Deccan Trap, India, and its application in adsorption and reduction of hexavalent chromium
- Nanomorphology of montmorillonite particles: Estimation of the clay edge sorption site density by low-pressure gas adsorption and AFM observations
- Medieval stained glass in a Mediterranean climate: Typology, weathering and glass decay, and associated biomineralization processes and products
- The structure of disordered mackinawite
- The reactivity of seven Mn-oxides with Cr3+aq: A comparative analysis of a complex, environmentally important redox reaction
- Sorption mechanisms of Sr and Pb on zeolitized tuffs from the Nevada test site as a function of pH and ionic strength
- Letters. Tailoring calcite: Nanoscale AFM of coccolith biocrystals