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subsolidus

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Journal Article
Published: 03 April 2025
American Mineralogist (2025)
...Qiang Liu; Jiankang Li; Yongchao Liu; Peng Li Abstract Spodumene and petalite are the primary minerals mined from pegmatites, the most important sources of hard-rock Li resources. In Li-mineralized pegmatites, the subsolidus reaction of petalite → spodumene + 2quartz (1) and its reverse reaction...
Journal Article
Published: 02 January 2024
American Mineralogist (2024) 109 (1): 24–34.
... fine-grained ilmenite grains; the other occurs as an aggregate of ilmenite, rutile, spinel, and loveringite. We propose that the two types of micro-textures formed through subsolidus breakdown of armalcolite by different processes. The formation of ilmenite inclusions in armalcolite is related to slow...
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Journal Article
Published: 01 November 2023
American Mineralogist (2023) 108 (11): 2024–2042.
... the lattices and misorientations in the crystal. The domain structure records a primary post-magmatic signature formed during initial subsolidus cooling ( T <800 °C), in which halogens clustered by phase separation (exsolution), but overall preserved continuity in the crystalline structure. Northwest Africa...
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Journal Article
Published: 07 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (2): 217–238.
... (biotite) alteration post-dates subsolidus separation of K-feldspar and albite from alkali feldspar phenocrysts. In the Karari syenitic intrusion samples, this separation is very advanced, resulting in K-feldspar-rich phenocrysts and albite-rich groundmass ( Fig. 2 e). Fig. 2. Petrography...
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Series: Geological Society, London, Special Publications
Published: 21 April 2020
DOI: 10.1144/SP491-2018-113
EISBN: 9781786204912
... has been able to act either as a magmatic or a subsolidus petrogenetic agent producing, at different crustal levels and during separate stages of the late Variscan orogenic cycle, both magmatic and metasomatic trondhjemites, now cropping out in the same small area of the south European Variscan Belt...
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Journal Article
Published: 01 March 2018
European Journal of Mineralogy (2018) 30 (2): 333–348.
... evolution as host peridotite and may develop substantially different phase assemblages in response to the different bulk composition. Although several experimental studies focused on melting relations in pyroxenites, subsolidus phase relations are still poorly known. We provide new experimental constraints...
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Journal Article
Published: 01 September 2017
American Mineralogist (2017) 102 (9): 1822–1831.
...Sylvie Demouchy; Svyatoslav Shcheka; Carole M.M. Denis; Catherine Thoraval Hydrogen distribution between nominally anhydrous minerals (NAMs) of a garnet-lherzolite under subsolidus conditions has been investigated. Separated NAMs from a garnet-peridotite from Patagonia (Chile) are annealed together...
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Journal Article
Published: 01 December 2016
Mineralogical Magazine (2016) 80 (7): 1161–1193.
... agpaitic complex’. This study describes the mineral assemblages formed during successive stages of evolution from magmatic to hydrothermal stages and low-temperature subsolidus re-equilibration assemblage. The primary–late magmatic assemblage is characterized by albite, orthoclase, unaltered nepheline...
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Journal Article
Published: 01 February 2014
American Mineralogist (2014) 99 (2-3): 543–546.
... (Δ T ≈ 200 °C) produces sequential assemblages from the margins to centers of melt bodies. The liquidus undercooling that drives subsolidus isothermal fractional crystallization is the single-most important process for the generation of zoned granitic pegmatites. Figure 1 ( a ) Nucleation delay...
FIGURES
Journal Article
Published: 01 November 2013
American Mineralogist (2013) 98 (11-12): 2172–2182.
...-catalyst . Journal of Crystal Growth , 106 , 471 – 475 . Katsura T. Ito E. ( 1990 ) Melting and subsolidus relations in the MgSiO 3 –MgCO 3 system at high pressures: implications to evolution of the Earth’s atmosphere . Earth and Planetary Science Letters , 99 , 110 – 117...
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Journal Article
Published: 01 October 2012
The Canadian Mineralogist (2012) 50 (5): 1255–1264.
...J. Victor Owen Abstract Double corona structures separating relict glass frit from metakaolinite in a teapot lid excavated from the Bow porcelain factory site in Stratford, east London record a history of partial melting and subsequent subsolidus reaction between the quenched melt phase...
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Journal Article
Published: 01 August 2011
The Canadian Mineralogist (2011) 49 (4): 913–930.
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Journal Article
Published: 01 April 2009
The Canadian Mineralogist (2009) 47 (2): 351–365.
... are stable over a wide range of temperature and chemical composition and readapt their composition to changing subsolidus conditions, including infiltration of external fluids. Therefore, EGM are a powerful petrogenetic indicator in agpaitic systems. Petrography and compositions of EGM record all stages...
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Journal Article
Published: 01 April 2007
American Mineralogist (2007) 92 (4): 699–702.
... of mixing (see below), these authors proposed a value of W Ol S,Mg-Fe = 0.6 ± 1.5 J/(mol·K) to describe the entropy of mixing behavior. Calorimetry forsterite–fayalite solid solution thermodynamics excess heat capacities and entropies subsolidus phase relations forsterite–fayalite solvus...
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Journal Article
Published: 01 November 2005
American Mineralogist (2005) 90 (11-12): 1871–1886.
... of the Vestan crust. Textures typical of basaltic rocks (ophitic, subophitic, variolitic) are preserved, even though most eucrites have been thermally metamorphosed. Eucrites exhibit varying degrees of subsolidus equilibration and are classified as type 1 (least metamorphosed) through type 6 (most metamorphosed...
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Journal Article
Published: 01 June 2005
The Canadian Mineralogist (2005) 43 (3): 1107–1122.
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Journal Article
Published: 02 January 2004
Reviews in Mineralogy and Geochemistry (2004) 56 (1): 171–195.
... ). The increasing number of experimental studies on epidote minerals reveals that the members of this group of ubiquitous rock forming minerals have huge stability fields, which extend to 7 GPa in pressure and to more than 1200°C in temperature. However, most of the experimental studies were performed at subsolidus...
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Journal Article
Published: 01 April 2003
American Mineralogist (2003) 88 (4): 624–638.
... facies. Subsolidus rocks are characterized by the association andalusite + staurolite; at the highest grades, anatectic migmatites are developed. Results of thermodynamic modeling in the MnNCKFMASH system are consistent with field data and imply a metamorphic field gradient that extends from 3.5–4.0 kbar...
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Journal Article
Published: 01 March 2001
European Journal of Mineralogy (2001) 13 (2): 289–309.
... such as formation of parental magmas, monobaric vs. polybaric crystallisation, mode and depth of emplacement and cooling history ( e.g. Ashwal, 1993 , for a review). Anorthosites, leucotroctolites and related gab-broic rocks commonly display late-magmatic and subsolidus reaction textures, among which garnet...
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Journal Article
Published: 01 June 1999
Mineralogical Magazine (1999) 63 (3): 313–320.