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all geography including DSDP/ODP Sites and Legs
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Africa
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Limpopo Belt (2)
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Primary terms
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absolute age (5)
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Africa
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Arctic Ocean
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GeoRef Categories
Era and Period
Date
Availability
sapphirine
Clustering and interfacial segregation of radiogenic Pb in a mineral host-inclusion system: Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile Available to Purchase
New Finding of Silica-deficient Sapphirine-bearing Granulites from NNE of Suranganar Village, Southern Madurai Block, India Available to Purchase
The Probable Metapelite Nature of Sapphirine–Spinel and Garnet Gedritites of the Aulandzha Block of the Omolon Massif Available to Purchase
The sapphirine-bearing rocks in contact with the Lherz peridotite body: New mineralogical data, age and interpretation Open Access
Extreme thermal metamorphism associated with Gondwana assembly: Evidence from sapphirine-bearing granulites of Rajapalayam, southern India Available to Purchase
New Occurrence of Sapphirine–spinel–bearing Granulite from NW of Chilka Lake, Eastern Ghats Belt, Odisha Available to Purchase
Khesinite, Ca 4 Mg 2 Fe 3+ 10 O 4 [(Fe 3+ 10 Si 2 )O 36 ], a new rhönite-group (sapphirine supergroup) mineral from the Negev Desert, Israel – natural analogue of the SFCA phase Available to Purchase
Kuratite, Ca 4 (F Ti 2 )O 4 [Si 8 Al 4 O 36 ], the Fe 2+ -analogue of rhönite, a new mineral from the D'Orbigny angrite meteorite Available to Purchase
Reaction textures and metamorphic evolution of sapphirine–spinel-bearing and associated granulites from Diguva Sonaba, Eastern Ghats Mobile Belt, India Available to Purchase
Ab initio thermodynamic and thermophysical properties of sapphirine end-members in the join Mg 4 Al 8 Si 2 O 20 -Mg 3 Al 10 SiO 20 Available to Purchase
New Finding of Sillmanite in Sapphirine-bearing Granulites from Pedapalli, NE Part of the Eastern Dharwar Craton, India Available to Purchase
A New Occurrence of Sapphirine-Spinel-Corundum-bearing Granulite from NE of Jagtiyal, Eastern Dharwar Craton, Andhra Pradesh Available to Purchase
Igneous sapphirine as a product of melt-peridotite interactions in the Finero Phlogopite-Peridotite Massif, Western Italian Alps Available to Purchase
ORTHOPYROXENE + SILLIMANITE PREDATING SAPPHIRINE + QUARTZ: A RARE CASE OF ULTRAHIGH-TEMPERATURE METAMORPHISM FROM THE CENTRAL ZONE, LIMPOPO COMPLEX, SOUTH AFRICA Available to Purchase
The genesis of mantle-derived sapphirine Available to Purchase
Different origins of Thai area sapphire and ruby, derived from mineral inclusions and co-existing minerals Available to Purchase
High-pressure and ultrahigh-temperature granulite-facies metamorphism of Precambrian high-grade terranes: Case study of the Limpopo Complex Available to Purchase
We report new petrological data for granulites from the Central Zone of the Limpopo Complex, southern Africa, and construct a prograde P-T path that traverses from high-pressure granulite-facies metamorphism to peak ultrahigh-temperature (UHT) metamorphism by rapid decompression, which was followed by further decompression and cooling. Mg-rich ( X Mg ~0.58) staurolite enclosed within poikiloblastic garnet in an Mg-Al-rich rock from the Beit Bridge area is rarely mantled by a sapphirine + quartz corona, suggesting the progress of the prograde dehydration reaction: staurolite + garnet → sapphirine + quartz + H 2 O. The symplectic sapphirine + quartz developed around staurolite probably implies decompression from P >14 kbar toward the stability of sapphirine + quartz at T ~1000 °C along a clockwise P-T path. The orthopyroxene + sillimanite + quartz assemblage mantled by cordierite aggregates in a pelitic granulite from the same area also suggests extreme metamorphism and subsequent further decompression. Various corona textures such as kyanite + sapphirine, sapphirine + cordierite, and orthopyroxene + cordierite were probably formed as a result of decompression cooling events. The prograde high-pressure metamorphism and the following UHT event relate to the collisional tectonics of the Zimbabwe and Kaapvaal Cratons, which are associated with the amalgamation of microcontinents during the Neoarchean.