1-20 OF 631 RESULTS FOR

skarn

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 April 2025
American Mineralogist (2025) 110 (4): 594–602.
...Alice Taddei; Paola Bonazzi; Hans-Jürgen Förster; Patrick Casey; Dan Holtstam; Andreas Karlsson; Luca Bindi Abstract A study of a skarn sample from the Malmkärra iron mines, Norberg, Västmanland (Sweden), revealed the occurrence of a peculiar epidote-supergroup mineral. It was examined using...
FIGURES | View All (7)
Journal Article
Published: 01 January 2025
Russ. Geol. Geophys. (2025) 66 (1): 69–81.
...V.V. Pustylnikova; V.A. Muftakhov; A.N. Obukhov; A.M. Kirsanov Lithological studies of sedimentary rocks are often challenged by manifestations of the superimposed processes which are related neither to the stages of lithogenesis, nor to its zonality/direction. This can be exemplified by skarns...
FIGURES | View All (9)
Journal Article
Published: 18 December 2024
The Canadian Journal of Mineralogy and Petrology (2024) 62 (6): 847–861.
... = 3, and V = 1152.771(7.554) Å 3 . Ehrigite occurs as sub-100-micron-sized grains in hedenbergite skarn from the abandoned Good Hope gold mine, Hedley district, British Columbia, Canada. The mineral and name have been approved by the IMA Commission on New Minerals and Mineral Nomenclature (proposal...
FIGURES | View All (17)
Journal Article
Journal: GSA Bulletin
Published: 26 November 2024
GSA Bulletin (2025) 137 (5-6): 1964–1984.
... mineralization, as exemplified by the Bozymchak Cu-Au skarn deposit in the Chatkal-Kurama arc of Kyrgyzstan, West Tianshan. The Bozymchak intrusion associated with the mineralization comprises monzonite porphyry and granodiorite porphyry. A sensitive high-resolution ion microprobe zircon U-Pb age of 305 ± 2 Ma...
FIGURES | View All (16)
Journal Article
Journal: GSA Bulletin
Published: 23 October 2024
GSA Bulletin (2025) 137 (3-4): 1504–1520.
... have provided favorable conditions for porphyry mineralization. However, conflicting geodynamic processes have been proposed, and their mineralization potential is unclear. Here, we report the newly discovered Banongzuosi porphyry-skarn Mo-Cu deposit and Qielong skarn Cu-Au and Rongqing porphyry-quartz...
FIGURES | View All (12)
Journal Article
Journal: Economic Geology
Published: 01 September 2024
Economic Geology (2024) 119 (6): 1383–1391.
... (aeschynite, 342–1,006 ppm U). In combination with the deposit geology and petrographic observations, these ages link the Nb mineralization to ~270 Ma granites. As these granites are not particularly rich in Nb, skarn formation during granite emplacement is interpreted to have remobilized the existing Nb...
FIGURES | View All (7)
Journal Article
Journal: Economic Geology
Published: 01 August 2024
Economic Geology (2024) 119 (5): 1059–1087.
... and skarn Cu ± Au (150–135 Ma) and IOA deposits (~130 Ma) that formed in transpressional and transtensional settings in the Middle-Lower Yangtze River metallogenic belt, China. Our estimates show that, compared to IOA deposits, the porphyry- and skarn-related magmas were relatively felsic, cooler, and more...
FIGURES | View All (16)
Journal Article
Published: 01 June 2024
American Mineralogist (2024) 109 (6): 1074–1084.
...Yongmei Zhang; Xuexiang Gu; Ting Li; Guang Fan; Yingshuai Zhang; Tao Wang; Jialin Wang Abstract Magnesio-ferri-hornblende, ideally ☐Ca 2 (Mg 4 Fe 3+ )[(Si 7 Al)O 22 ](OH) 2 , is a new mineral of the amphibole supergroup from the Husite granitic complex related to skarn-type Fe-Cu mineralization...
FIGURES | View All (8)
Journal Article
Published: 01 May 2024
Russ. Geol. Geophys. (2024) 65 (5): 594–608.
... aureoles demonstrate similar coupled δ 18 O–δ 13 C decreasing trends from the field of marine limestone, to the protolith/marble transition (Δδ 18 O –18 to –10‰ and Δδ 13 C –16 to –5‰), and on to zones of metasomatism, skarn, and vein mineralization. These patterns imply phase transformations involving...
FIGURES | View All (4)
Journal Article
Published: 01 April 2024
American Mineralogist (2024) 109 (4): 747–763.
...YunHao Ji; GuiQing Xie; Rolf L. Romer; Wei Li; QiaoQiao Zhu; Bin Fu Abstract Scheelite (CaWO 4 ) is an economically important W mineral in skarns that form when magmatic fluids exsolved from a granitic intrusion react with carbonate wall rocks. In the Fujiashan W skarn deposit, scheelite formed...
FIGURES | View All (13)
Journal Article
Journal: GSA Bulletin
Published: 09 February 2024
GSA Bulletin (2024) 136 (9-10): 3569–3590.
...Hegen Ouyang; John Caulfield; Guiqing Xie; Chao Duan; Jingwen Mao; Xin Li Abstract Most known copper (Cu) skarns are associated with oxidized intrusions. In this contribution, we report a Cu skarn associated with a reduced monzodioritic intrusion at Huanren, northeastern China, which contains 0.41...
FIGURES | View All (20)
Journal Article
Journal: SEG Discovery
Published: 01 October 2023
SEG Discovery (2023) (135): 13–25.
... stockworks, magmatic-hydrothermal breccias, vuggy residual quartz or vein systems in telescoped lithocaps, proximal skarns, carbonate-replacement mantos and pipes, low-permeability barriers, and reactive mafic host rocks—either alone or in various combinations—are identified as particularly favorable...
FIGURES | View All (8)
Journal Article
Published: 01 October 2023
American Mineralogist (2023) 108 (10): 1957–1972.
...Lijie Liu; Taofa Zhou; Bin Fu; Trevor R. Ireland; Dayu Zhang; Guangxian Liu; Feng Yuan; Xiangping Zha; Noel C. White Abstract Diverse fluid sources and complex fluid flow paths in skarn systems appear to be well documented. Nevertheless, in situ microanalysis of oxygen isotopes by secondary ion...
FIGURES | View All (11)
Journal Article
Published: 11 September 2023
Mineralogical Magazine (2024) 88 (1): 61–89.
... to ore-forming processes that are distinct for different ore deposit types. Hence the trace-element compositions of magnetite can be used to characterise a particular ore type (e.g. magnetite-bearing ore deposits including Ni–Cu–PGE, banded iron formation (BIF), iron oxide–Cu–Au (IOCG), skarn, porphyry...
FIGURES | View All (12)
Journal Article
Published: 07 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (2): 313–350.
...Raúl Lira; María J. Espeche; Natalia A. Bonadeo; Michael J. Dorais Abstract Helvine [Be 3 Mn 2+ 4 (SiO 4 ) 3 S] occurs in less than one meter-sized spotty concentrations in some calcic skarns of Córdoba province, Argentina. The local geology, mineral chemistry, paragenetic mineral associations...
FIGURES | View All (16)
Journal Article
Journal: GSA Bulletin
Published: 30 June 2023
GSA Bulletin (2024) 136 (1-2): 351–370.
...Shahrokh Rajabpour; Shohreh Hassanpour; Shao-Yong Jiang Abstract The Mazraeh Cu skarn deposit, NW Iran, is situated at the lithological contact between an Oligo–Miocene granodiorite and Cretaceous limestones. The causative granodiorite has I-type medium- to high-K calc-alkaline composition...
FIGURES | View All (15)
Journal Article
Published: 08 June 2023
Mineralogical Magazine (2023) 87 (5): 731–737.
... of the apatite supergroup. It occurs in skarn from the Malmkärra iron mine, Norberg, Västmanland (one of the Bastnäs-type deposits in Sweden), associated with calcite, dolomite, magnetite, lizardite, talc, fluorite, baryte, scheelite, gadolinite-(Nd) and other REE minerals. Fluorbritholite-(Nd) forms anhedral...
FIGURES | View All (6)
Journal Article
Published: 01 June 2023
South African Journal of Geology (2023) 126 (2): 127–150.
... magmatic skarn that contains several small, cm- to dm-scale, calc-silicate fragments displaying the same peak assemblage as the main xenolith, as well as a dm-scale chromitite autolith and mm- to dm-scale lenses and stringer-like masses of fine-grained uvarovite. The skarn matrix is mineralogically zoned...
FIGURES | View All (10)
Journal Article
Journal: Geology
Published: 17 March 2023
Geology (2023) 51 (5): 491–495.
.... Melt inclusions in endoskarn from the Chating Cu-Au deposit in eastern China reveal that the calc-silicate assemblage (diopside + andradite ± wollastonite ± epidote) was molten at the time of skarn formation and coexisted with CO 2 vapor as well as sulfate- and chloride-salt melts. Hence, we argue...
FIGURES | View All (4)
Journal Article
Published: 03 October 2022
American Mineralogist (2022) 107 (10): 1952–1959.
... ( N ) and spinel ( S ) modules. Both phases have been discovered in the Xianghualing skarn, Hunan Province, China. Zinconigerite-2 N 1 S (zn-2 N 1 S ) and zinconigerite-6 N 6 S (zn-6 N 6 S ) are named for their chemical composition, number, and ratios of N-S modules, according to the nomenclature...
FIGURES | View All (5)