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18 Results Found

  • Article
  • Open Access
12 Citations
6,383 Views
18 Pages

The Problem of the Formation of Boehmite and Gibbsite in Bauxite-Bearing Lateritic Profiles

  • Vladimir Mamedov,
  • Natalia Boeva,
  • Marina Makarova,
  • Elena Shipilova and
  • Philimon Melnikov

21 March 2022

The study of a large amount of factual material about the formation conditions of gibbsite or boehmite and their mutual transformations in lateritic bauxites allowed us to solve the problem of boehmite formation and its spatial and genetic relationsh...

  • Article
  • Open Access
7,385 Views
32 Pages

Stealth Metasomatism in Granulites from Ivrea (NW Italy): Hydration of the (Variscan) Lower Crust by Melt Flow

  • Stylianos Karastergios,
  • Simona Ferrando,
  • Barbara E. Kunz and
  • Maria Luce Frezzotti

Granulites and associated dykes from the less well-studied southern Ivrea–Verbano Zone (around Ivrea town) are characterized by combining field, macro, micro and chemical (major and trace-element mineral composition) data to identify chemical a...

  • Article
  • Open Access
6 Citations
4,997 Views
18 Pages

Fluid Infiltration and Mass Transfer along a Lamprophyre Dyke–Marble Contact: An Example from the South-Western Korean Peninsula

  • Jungrae Noh,
  • Changyeob Kim,
  • Vinod O. Samuel,
  • Yirang Jang,
  • Seung-Ik Park and
  • Sanghoon Kwon

20 September 2020

In this contribution, we report the metasomatic characteristics of a lamprophyre dyke–marble contact zone from the Hongseong–Imjingang belt along the western Gyeonggi Massif, South Korea. The lamprophyre dyke intruded into the dolomitic m...

  • Article
  • Open Access
1 Citations
1,499 Views
23 Pages

29 July 2024

Fluid infiltration into Proterozoic and Early Palaeozoic dry, orthopyroxene-bearing granitoids and gneisses in Dronning Maud Land, Antarctica, has caused changes to rock appearance, mineralogy, and rock chemistry. The main mineralogical changes are t...

  • Article
  • Open Access
5 Citations
3,355 Views
14 Pages

17 December 2022

Hydrothermal gold mineralization is commonly associated with metasomatic processes resulting from interaction of hostrock with infiltrating hot aqueous fluids. Understanding of the alteration mechanism requires quantification of element changes in al...

  • Article
  • Open Access
1 Citations
4,768 Views
26 Pages

9 June 2021

The axinite-bearing Gukjeon Pb–Zn deposit is hosted by the limestone, a member of the Jeonggaksan Formation, which, in turn, forms the part of the Jusasan subgroup of the Yucheon Group in the Gyeongsang Basin in the southeastern part of the Korean Pe...

  • Article
  • Open Access
15 Citations
4,640 Views
33 Pages

14 March 2020

More than forty mineral species of epigenetic origin have been identified in an orthopyroxenite from the Udachnaya-East kimberlite pipe, Daldyn kimberlite field, Siberian platform. Epigenetic phases occur as: (1) Mineral inclusions in the rock-formin...

  • Article
  • Open Access
14 Citations
5,535 Views
18 Pages

17 November 2020

A newly discovered tungsten ore district containing more than 300,000 tons of WO3 in southern Anhui Province has attracted great attention. The Zhuxiling W (Mo) deposit in the district is dominated by skarn tungsten mineralization. This paper conduct...

  • Article
  • Open Access
6 Citations
2,764 Views
25 Pages

23 December 2022

The Niukutou Pb-Zn deposit is typical of skarn deposits in the Qimantagh metallogenic belt (QMB) in the East Kunlun Mountains. In this study, based on detailed petrographical observations, electron microprobe analyses (EMPAs), and laser-ablation&ndas...

  • Article
  • Open Access
2 Citations
3,074 Views
20 Pages

13 July 2023

The Changpo–Tongkeng tin polymetallic deposit in Dachang, Guangxi, is a world-class, superlarge, polymetallic tin deposit consisting of lower skarn zinc–copper ore bodies and upper tin polymetallic ore bodies. Garnet is the main gangue mi...

  • Article
  • Open Access
4 Citations
5,524 Views
34 Pages

Geological, Geochemical, and Mineralogical Constraints on the Genesis of the Polymetallic Pb-Zn-Rich Nuocang Skarn Deposit, Western Gangdese, Tibet

  • Junsheng Jiang,
  • Shunbao Gao,
  • Youye Zheng,
  • David R. Lentz,
  • Jian Huang,
  • Jun Liu,
  • Kan Tian and
  • Xiaojia Jiang

23 September 2020

The Nuocang Pb-Zn deposit is a newly discovered polymetallic skarn deposit in the southern Lhasa subterrane, western Gangdese, Tibet. The skarn occurs at the contact between the limestone of Angjie Formation and the Linzizong volcanic rocks of Dianzh...

  • Article
  • Open Access
11 Citations
5,683 Views
20 Pages

3 March 2019

The Carboniferous Batamayineishan Formation of the Kelameili Gas Field is a specific weathered crust-related volcanic reservoir that has a significant production rate in the Junggar Basin, Northwestern China, attributed to debatable processes of flui...

  • Article
  • Open Access
4 Citations
4,245 Views
20 Pages

12 December 2020

The Bayan Obo rare earth element (REE) deposit in Inner Mongolia, northern China, is the largest REE deposit in the world, whose mineralization process remains controversial. There are dozens of carbonatite dykes that are tightly related to the depos...

  • Article
  • Open Access
27 Citations
7,664 Views
27 Pages

19 October 2017

The large Yongping Cu deposit is situated in the eastern Qin-Hang Metallogenic Belt, Southeast China and on the southern side of the Yangtze—Cathaysia suture zone, and is characterized by large stratiform orebodies. Garnet represents the main non-met...

  • Article
  • Open Access
5 Citations
2,826 Views
21 Pages

21 February 2024

The Makeng iron deposit in southwest Fujian is a significant iron polymetallic deposit containing various types of iron ore, including garnet magnetite, diopside magnetite, and quartz magnetite. The metallogenetic type of the deposit has been a subje...

  • Article
  • Open Access
14 Citations
6,580 Views
28 Pages

The Role of Magmatic and Hydrothermal Fluids in the Formation of the Sasa Pb-Zn-Ag Skarn Deposit, Republic of Macedonia

  • Sabina Strmić Palinkaš,
  • Zlatko Peltekovski,
  • Goran Tasev,
  • Todor Serafimovski,
  • Danijela Šmajgl,
  • Kristijan Rajič,
  • Jorge E. Spangenberg,
  • Kai Neufeld and
  • Ladislav Palinkaš

29 November 2018

The Sasa Pb-Zn-Ag deposit belongs to the group of distal base metal skarn deposits. The deposit is located within the Serbo-Macedonian massif, a metamorphosed crystalline terrain of Precambrian to Paleozoic age. The mineralization, hosted by Paleozoi...

  • Article
  • Open Access
9 Citations
6,153 Views
25 Pages

23 March 2021

In order to reveal the formation mechanism of different garnets and its implications for the fluid evolution in the Laoshankou Fe-Cu-Au deposit in the northern margin of East Junggar (NW China), three types of garnet have been investigated in detail...

  • Article
  • Open Access
23 Citations
8,195 Views
34 Pages

Zircon at the Nanoscale Records Metasomatic Processes Leading to Large Magmatic–Hydrothermal Ore Systems

  • Liam Courtney-Davies,
  • Cristiana L. Ciobanu,
  • Max R. Verdugo-Ihl,
  • Ashley Slattery,
  • Nigel J. Cook,
  • Marija Dmitrijeva,
  • William Keyser,
  • Benjamin P. Wade,
  • Urs I. Domnick and
  • Alkiviadis Kontonikas-Charos
  • + 2 authors

16 June 2019

The petrography and geochemistry of zircon offers an exciting opportunity to better understand the genesis of, as well as identify pathfinders for, large magmatic–hydrothermal ore systems. Electron probe microanalysis, laser ablation inductivel...