Results 31 to 40 of about 15,774 (268)
High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle
Geophysical Monograph Series, Page 127-136., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko +2 more
wiley +1 more source
Геологія і корисні копалини Світового океану, 2023 Pegmatite (sample 13/10) exposed in the valley of the Berezivka River (Krynychuvatka village) was studied and its isotopic age was determined by monazite.
Stepanyuk L.M. +4 more
doaj +1 more source
Brazilian Journal of Geology, 2021 Two porphyritic granitoids (Huaco and Sanagasta) in the Velasco district of the Pampeana Pegmatite Province in Northwestern Argentina are recognized. They are considered the fertile granites of the beryl-bearing pegmatites and can be described as post ...
Fernando Guillermo Sardi +2 more
doaj +1 more source
Dizhi lixue xuebao, 2022 The Ke'eryin area in Sichuan province is one of the large rare metal ore concentration areas in the Songpan–Garze metallogenic belt. Numerous granite pegmatite dikes spread around the Ke'eryin mass.
TANG Wenchun +5 more
doaj +1 more source
Research advances on rare metal pegmatite deposits
地质科技通报, 2021 The pegmatite deposit is one of the most important types of rare metal deposits in the world, and it is also one of the most popular interests in the international deposit research.Significant advances have been made in the latest decades, including the ...
Zilong Ran, Yanjun Li
doaj +1 more source
Journal of Economic Geology, 2022 Blue-colored corundum (sapphire) is found in syenitic pegmatites in Alvand igneous complex in the Khako area. From the petrographic point of view, the host rock is composed of feldspar and small amounts of quartz, which includes corundum crystals of ...
Hadis Sadeghi +3 more
doaj +1 more source
Geochemical and Isotope Anomalies in Sioma River Gorge, Western Tajikistan
Radiation, 2021 For a better understanding of the previously observed increased natural radioactivity at the confluence of the Varzob and Sioma rivers, Central Tajikistan, the activity concentration of natural radioactive 40K, Th and U daughters as well as of the ...
Djamshed A. Abdushukurov +3 more
doaj +1 more source
Frontiers in Earth Science, 2022 Fluid exsolution in magmas is a process that, in many silicic upper crustal reservoirs, starts at relatively low crystallinities (near liquidus), and precedes the precipitation of many ore bodies, including pegmatites.
Ludmila Maria Fonseca Teixeira +3 more
doaj +1 more source
RELATIVE AGE OF ACCESSORY MINERALS IN PEGMATITES OF THE ILMENY MOUNTAINS, SOUTH URALS [PDF]
Минералогия, 2021 Effective retrospective modeling of mineral formation in natural systems should take into account all minerals – rock-forming, secondary in abundance and accessory.
V.A. Popov
doaj +1 more source
A new occurrence of samuelsonite in the Buranga Pegmatite, Rwanda [PDF]
Bulletin of the Geological Society of Finland, 1992 A new occurrence of the rare mineral species, samuelsonite, is reported from the Buranga pegmatite, Rwanda, in close association with gatumbaite and burangaite, as aggregates of bladed crystals imbedded in trolleite and in bertossaite.
A.-M. Fransolet +2 more
doaj +1 more source