Results 61 to 70 of about 355 (183)

Allanite occurrences in Westland, New Zealand (Note) [PDF]

open access: yesNew Zealand Journal of Geology and Geophysics, 1985
Abstract Allanite occurs widely as an accessory mineral in granitoid rocks from Westland, New Zealand, and is particularly characteristic of tonalites. It is rare in metamorphic rocks. Microprobe analyses show a fair uniformity in composition; the range of rare earth concentrations (weight percent) is La
openaire   +1 more source

Radiogenic Heating as the Thermal Driver of Himalayan Crustal Heating During Prolonged Thickening

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The thermal evolution of the crust during continental collision evolves from cold to hot with time, which impacts crustal reworking and differentiation. However, it remains elusive as to the mechanism driving the crust to be hot during the protracted collision.
Shuaiqi Liu   +4 more
wiley   +1 more source

REE AND SR MINERALIZATION WITH PERRIERITE-(CE) IN ALKALINE SILICATE-CARBONATE ASSEMBLAGE OF THE CONTACT ZONE OF THE VISHNEVOGORSK BLOCK (SOUTH URALS) [PDF]

open access: yesМинералогия, 2016
The REE and Sr minerals (perrierite-(Ce), allanite-(Ce), ankilite-(Ce), monazite-(Ce), «cerphosforhuttonite») were identified in the apatite-albite-phlogopite-calcite veins of the contact zone of the Vishnevogorsk miaskite block.
E.P. Makagonov, V.A. Muftakhov
doaj  

Heavy minerals in sediments from the Mošnica Cave: Implications for the pre-Quaternary evolution of the middle-mountain allogenic karst in the Nízke Tatry Mts., Slovakia

open access: yesActa Carsologica, 2014
The cave deposits from the Mošnica Cave located on the northern slope of the Nízke Tatry Mts. were analysed by sedimentological, petrographical and mineralogical methods.
Katarína Bónová   +6 more
doaj   +1 more source

RARE EARTH MINERALS IN ALKALINE AND SUBALKALINE ROCKS OF THE BALBUK COMPLEX (SOUTH URALS) [PDF]

open access: yesМинералогия, 2016
Mineral composition of alkaline and subalkaline rocks of the Balbuk complex (South Urals) is characterized. The major REE minerals are monazite-(Ce), allanite-(Ce), and rhabdophane-(Ce).
E.P. Makagonov, V.A. Kotlyarov
doaj  

Geochemical implications for the magma origin of granitic rocks from the Ditrău Alkaline Massif (Eastern Carpathians, Romania)

open access: yesGeologia Croatica, 2015
In addition to a series of ultramafic to mafic and alkaline igneous rocks, a granite body also occurs in the Ditrău AlkalineMassif, Eastern Carpathians, Romania. We present and discuss mineral chemical data, and major and traceelement compositions of the
Elemer Pal-Molnar   +4 more
doaj   +1 more source

OXIDES AND SILICATES OF RARE AND RARE-EARTH ELEMENTS IN ALKALINE ROCKS OF THE ILMENOGORSKY BLOCK (SOUTHERN URALS) [PDF]

open access: yesМинералогия, 2017
A significant part of the REE and rare elements in the rocks of the Ilmenogorsky block forms its own minerals. Oxides and silicates of rare and rare-earth elements in alkaline rocks of Ilmenogorsky block (Southern Urals) include oxynatropyrochlore ...
E.P. Makagonov   +2 more
doaj  

Occurrence of a skarn-type mineralogy found in Ciénaga Marbles, located in the NW foothills of the Santa Marta Massif (Colombia)

open access: yesDyna, 2016
The early Cretaceous Ciénaga Marbles that crop out in the NW foothills of the Santa Marta Massif (Colombian Caribbean region) present an epigenetic mineral assemblage (skarn-type), overprinting the metamorphic mineral assemblage previously developed ...
Oscar Mauricio Castellanos-AlarcónCarlos   +2 more
doaj   +1 more source

Natural radioactivity distribution and gammaradiation exposure of beach sands close to Kavalapluton, Greece

open access: yesOpen Geosciences, 2015
This study aims to evaluate the activity concentrationsof 238U, 226Ra, 232Th, 228Th and 40K along thebeaches of Kavala being adjacent to the rock-types of theKavala pluton.
Papadopoulos Argyrios   +3 more
doaj   +1 more source

Predicting new mineral occurrences and planetary analog environments via mineral association analysis. [PDF]

open access: yesPNAS Nexus, 2023
Morrison SM   +9 more
europepmc   +1 more source

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