Results 71 to 80 of about 518 (163)

Petrogenesis of Mesoproterozoic lamproite dykes from the Garledinne (Banganapalle) cluster, south-western Cuddapah Basin, southern India

, 2016
We report mineral chemistry and whole-rock major and trace-element geochemistry for a recent find of Mesoproterozoic (∼1.4 Ga) lamproites from the Garledinne (Banganapalle) cluster, south-western part of the Paleo-Mesoproterozoic Cuddapah Basin ...
Nanda, Purnendu, Sahoo, Samarendra, Atiullah, ., Lehmann, B., Chalapathi Rao, N. V., Chahong, Ngazimpi, Kumar, Alok, Rao, K. V. S.   +7 more
core   +1 more source

Petrography and mineral chemistry of lamproite-hosted xenoliths from Kjakebeinet, western Dronning Maud Land, Antarctica

, 2013
Jurassic (159 Ma), ultrapotassic, mica-rich dykes of Kjakebeinet represent the youngest magmatic rock type observed in western Dronning Maud Land, Antarctica; abundant xenoliths are enclosed by the dykes.
Romu, Ilona
core  

Kaapvaal lamproite melts (aka orangeites) : A new type of alkali-carbonate liquid? insights from olivine-hosted multiphase inclusions (Silvery Home, South Africa)

Kaapvaal lamproites (aka orangeites) are a group of volatile-rich (H2O, CO2), micaceous, ultrapotassic igneous rocks that are unique to the Kaapvaal craton in southern Africa.
Howarth, Geoffrey H., Abersteiner, Adam, Golovin, Alexander, Tarasov, Alexey, Kamenetsky, Vadim S.   +4 more
core   +1 more source

Structure, composition and origin of yangzhumingite and phlogopite from the Kvaløya lamproite (North Norway)

, 2014
This study reports a petrographic and crystal chemical analysis of three types of micas (yangzhumingite, light brown phlogopite and dark brown phlogopite) found in a lamproitic dyke at the Kvaløya Island (North Norway).
Kullerud K, MESTO, ERNESTO, Zozulya D, SCHINGARO, Emanuela, Ravna E. J. K., Erambert M, Ravna EJK, LACALAMITA, MARIA, Scordari F   +8 more
core   +1 more source

Canyon Diablo lonsdaleite is a nanocomposite containing c/h stacking disordered diamond and diaphite. [PDF]

Philos Trans A Math Phys Eng Sci, 2023
Németh P, Garvie LAJ, Salzmann CG.
europepmc   +1 more source

Mineralogical evidence for lamproite magma mixing and storage at mantle depths: Socovos fault lamproites, SE Spain

Lithos, 2016
Detailed textural and mineral chemistry characterisation of lamproites from the Socovos fault zone, SE Spain Neogene Volcanic Province (NVP) combining X-ray element maps and LA-ICP-MS spot analyses has provided valuable information about mantle depth ultrapotassic magma mixing processes. Despite having similar whole-rock compositions, rocks emplaced in
Cambeses, Aitor, García Casco, Antonio, Scarrow, Jane Hannah, Montero, Pilar, Pérez-Valera, Luis Alfonso, Bea, Fernando   +5 more
openaire   +2 more sources

Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres. [PDF]

Sci Rep, 2023
Prokopyev I, Doroshkevich A, Starikova A, Kovalev S, Nugumanova Y, Izokh A.   +5 more
europepmc   +1 more source

Origin of anorogenic ‘lamproite-like’ potassic lavas from the Denizli region in Western Anatolia Extensional Province, Turkey

, 2010
The Denizli region of the Western Anatolia Extensional Province (WAEP) includes a typical example of intra-plate potassic magmatism. Lamproite-like K-rich to shoshonitic alkaline rocks erupted in the Upper Miocene-Pliocene in a tensional tectonic setting.
Kamil Yılmaz, Yilmaz, Kamil
core   +1 more source

Kimberlite and lamproite dykes from Holsteinsborg, West Greenland

, 1981
Numerous kimberlite and lamproite dykes occur to the south and east of Holsteinsborg in Central West Greenland. This paper gives details of the petrography, mineral chemistry, age relations and geochemistry of the dykes.
Scott, Barbara H.
core  

Diamond preservation in the lithospheric mantle recorded by olivine in kimberlites. [PDF]

Nat Commun, 2023
Giuliani A, Phillips D, Pearson DG, Sarkar S, Müller AA, Weiss Y, Preston R, Seller M, Spetsius Z.   +8 more
europepmc   +1 more source