Solubility and stability of beryl in granitic melts

Evensen, Joseph M.; London, David; Wendlandt, Richard F.

doi:10.2138/am-1999-5-605

Cited by 69 publications

(48 citation statements)

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“…4) shows a weak dependence on temperature with lower values measured at lower temperatures. This observation is consistent with the results from previous studies, which demonstrated that the solubility of other elements in silicate melts saturated with crystalline phases containing large concentrations of those elements showed a positive correlation with temperature (e.g., Harrison and Watson 1984;Pichavant et al 1992;Linnen 1998;London et al 1998;Evensen et al 1999;Bartels et al 2010;Van Lichtervelde et al 2010;Che et al 2013). …”

Section: Estimation Of LI Solubility At Li-aluminosilicate Saturationsupporting

confidence: 93%

Evidence for lithium-aluminosilicate supersaturation of pegmatite-forming melts

Maneta

Baker

Minarik

2015

Contrib Mineral Petrol

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Section: Estimation Of LI Solubility At Li-aluminosilicate Saturationsupporting

confidence: 93%

Evidence for lithium-aluminosilicate supersaturation of pegmatite-forming melts

Maneta

Baker

Minarik

2015

Contrib Mineral Petrol

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“…The BeP and the OG point to the importance of water and/or volatiles in the late stages of crystallization of the main granite. The formation of the BeP and its main accessory mineral, beryl, require conditions of water-saturation and the presence of volatiles (Jahns and Burnham, 1969;Evensen et al, 1999). The circulation of water during pegmatitic crystallization is also manifested by the Na-metasomatism present in the pegmatite bodies (Sardi et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina

Sardi

Grosse

Murata

et al. 2018

andgeo

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ABSTRACT. The A-type Huaco granite pluton of the Velasco range (Sierras Pampeanas of northwest Argentina) is formed by three coeval granitic facies and contains subordinate coeval-to-late facies, as well as enclaves, dikes and stocks that show different temporal relations, textures and compositions. The dominant facies (Regional Porphyritic Granite; RPG) is a porphyritic two-mica monzo-to syenogranite, with abundant microcline megacrysts up to 12 cm in size. It was emplaced in a dominant extensional setting and has a mainly crustal source but with participation of a mantle-derived component. The RPG transitions towards two coeval and co-genetic granite facies, at its margins (Border Granite; BG) and around Be-pegmatites (Adjacent Porphyritic Granite; APG). These two facies have a finer-grained texture and smaller and less abundant megacrysts. They are also monzo-to syenogranites, but a slight decrease in the biotite/muscovite ratio is observed from the BG to the RPG to the APG. Trace element modeling suggests that the RPG, BG and APG differentiated from the same magma source by fractional crystallization. Temporally older mafic (ME) and felsic (FE) enclaves are common in the pluton. The ME can be considered partially assimilated remnants of a mafic component in the genesis of the RPG, whereas the FE seem to be remnants of premature aplites. Other subordinate rocks intrude the RPG and are, hence, temporally younger: felsic dikes (FD), dioritic dikes (DD) and equiganular granites (EqG) are clearly posterior, whereas coeval-to-late Be-pegmatites (BeP) and orbicular granites (OG) formed during the final stages of crystallization of the pluton. The BeP, OG and FD indicate the presence of abundant water and volatiles. The EqG form small stocks that intrude the RPG and were possibly originated from purely crustal sources. The DD probably correspond to a younger unrelated episode of mafic magmatism. Keywords: Granitic facies, REE and LIL composition,Fractional crystallization model, Huaco granite, Velasco range, Sierras Pampeanas.RESUMEN. Estructura interna y geoquímica del plutón granítico carbonífero de Huaco, Sierra de Velasco, NW de Argentina. El Plutón Huaco, ubicado en la sierra de Velasco (en Sierras Pampeanas del noroeste de Argentina), es de afinidad granítica A y está conformado por tres facies graníticas y contiene varias rocas ígneas subordinadas, las que muestran diferentes relaciones temporales, texturas y composiciones. La facies granítica dominante (Granito Porfírico Regional; RPG) es un monzo-sienogranito de dos micas, de textura porfírica con abundantes megacristales de microclino que pueden alcanzar hasta 12 cm de longitud. Ha sido emplazado en un marco tectónico dominantemente extensional y habría tenido una fuente de origen cortical pero también con participación de componentes mantélicos. En los bordes del Plutón Huaco y envolviendo a pegmatitas de berilo contenidas en el mismo (BeP), se reconocen las facies cogenéticas BG y APG respectivamente, las cuales tienen contacto transicional con el RPG. E...

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“…Beryl, a beryllium aluminum silicate mineral, is mostly found in granites and granite pegmatites (Charoy 1999;Evensen et al 1999) and sometimes in topaz rhyolite, metamorphic rocks, or in the veins and cavities of limestones and marbles (Evensen et al 1999). The occurrence of beryl rather than other beryllium silicate minerals in granitic pegmatites stems from its stability relations in quartz-saturated portions of the system BeO-Al 2 O 3 -SiO 2 -H 2 O (Burt 1978;Barton 1986;Čemić et al 1986;Evensen et al 1999), in which divariant assemblages containing beryl +quartz occur over the range of moderate pressures Abstract High-pressure single-crystal synchrotron X-ray diffraction was carried out on a single crystal of natural beryl compressed in a diamond anvil cell.…”

Section: Introductionmentioning

confidence: 99%

“…The occurrence of beryl rather than other beryllium silicate minerals in granitic pegmatites stems from its stability relations in quartz-saturated portions of the system BeO-Al 2 O 3 -SiO 2 -H 2 O (Burt 1978;Barton 1986;Čemić et al 1986;Evensen et al 1999), in which divariant assemblages containing beryl +quartz occur over the range of moderate pressures Abstract High-pressure single-crystal synchrotron X-ray diffraction was carried out on a single crystal of natural beryl compressed in a diamond anvil cell. The pressure-volume (P-V) data from room pressure to 9.51 GPa were fitted by a third-order Birch-Murnaghan equation of state (BMEoS) and resulted in unit-cell volume V 0 = 675.5 ± 0.1 Å 3 , isothermal bulk modulus K 0 = 180 ± 2 GPa, and its pressure derivative K ′ 0 = 4.2 ± 0.5.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the pressure-volumetemperature (P-V-T) EoS of the natural beryl has also been measured at temperatures up to 750 K and at pressures up to 16.81 GPa, using diamond anvil cell in conjunction with in situ synchrotron angle-dispersive powder X-ray diffraction. The P-V data at room temperature and at a pressure range of 0.0001-15.84 GPa were then analyzed by third-order BMEoS and yielded V 0 = 675.3 ± 0.1 Å 3 , K 0 = 180 ± 2 GPa, and temperatures pertinent to the magmatic consolidation of pegmatites (Evensen et al 1999). The tetrahedral framework of beryl (ideal formula Be 3 Al 2 Si 6 O 18 ; space group P6/mcc) is composed of sixfold rings of Si tetrahedral cross-linked by Be-containing tetrahedral and Al-containing octahedral polyhedra (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Compressibility and equation of state of beryl (Be3Al2Si6O18) by using a diamond anvil cell and in situ synchrotron X-ray diffraction

Fan

Kuang

et al. 2015

Phys Chem Minerals

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K ′ 0 = 4.2 ± 0.3. With K ′ 0 fixed to 4.0, we also obtained V 0 = 675.2 ± 0.1 Å 3 and K 0 = 182 ± 1 GPa. Consequently, we fitted the P-V-T data with high-temperature BM-EoS approach using the resultant K ′ 0 (4.2) from room-temperature BM-EoS and then obtained the thermoelastic parameters of V 0 = 675.3 ± 0.2 Å 3 , K 0 = 180 ± 1 GPa, temperature derivative of the bulk modulus (∂K/∂T) P = −0.01 7 ± 0.004 GPa K −1 , and thermal expansion coefficient at ambient conditions α 0 = (2.82 ± 0.74) × 10 −6 K −1 . Present results were also compared with previous studies for beryl. From the comparison of these fittings, we propose to constrain K 0 = 180 GPa and K ′ 0 = 4.2 for beryl. And we also observed that beryl exhibits anisotropic thermal expansion at relatively low temperatures, which is very consistent with previous studies. Furthermore, no phase transition was observed in the entire pressure and temperature range (up to 16.84 GPa and 750 K) of this study for the natural beryl.

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Solubility and stability of beryl in granitic melts

Cited by 69 publications

References 0 publications

Evidence for lithium-aluminosilicate supersaturation of pegmatite-forming melts

Evidence for lithium-aluminosilicate supersaturation of pegmatite-forming melts

Internal framework and geochemistry of the Carboniferous Huaco granite pluton, Sierra de Velasco, NW Argentina

Compressibility and equation of state of beryl (Be3Al2Si6O18) by using a diamond anvil cell and in situ synchrotron X-ray diffraction

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