Results 71 to 80 of about 2,999 (192)

Fluoro-tremolite, IMA 2016-018

, 2016
Fluoro-tremolite Ca2Mg5Si8O22F2 Limecrest-Southdown quarry, Sparta, New Jersey, USA Amphibole supergroup Monoclinic: C2/m; structure determined a = 9.846(2), b = 18.050(3), c = 5.277(1) Å, β = 104.80(2)° 3.381(57), 3.276(38), 3.126(67), 2.940(43),
Oberti, Roberta, Camara, Ferdinando, Bellatreccia, Fabio, Radica, F., GIANFAGNA, Antonio   +4 more
core   +1 more source

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar, Rohit Pandey, Nils Björn Baumann, N. V. Chalapathi Rao, George Mathew, J. Amal Dev, J. K. Tomson   +6 more
wiley   +1 more source

Composition and Genesis of Dark Dolomite-Type Nephrite in the Kavokta Deposit, Middle Vitim Mountain Country, Russia

Geosciences
The Kavokta deposit in Russia contains gray and black dolomite-type nephrite, which is in high demand commercially. Although the fact that black nephrite has been found in several deposits, the reasons for its color are not well understood.
Evgeniy V. Kislov, Irina Yu. Kotova, Viktor F. Posokhov, Artem V. Trofimov, Elena A. Khromova   +4 more
doaj   +1 more source

The Seismic Signature of the Atlantis Massif Oceanic Detachment Fault Determined From Crystallographic Preferred Orientation and Microstructure

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract At slow‐spreading mid‐ocean ridges large scale detachment faults partly accommodate the spreading process. The mafic and ultramafic rocks at the ridges are infiltrated by water and change their mineralogy. Subsequently or contemporaneously to these reactions, detachment faulting takes place.
R. Kuehn, J. H. Behrmann, J. Kossak‐Glowczewski, B. Leiss, M. Stipp   +4 more
wiley   +1 more source

Gemological Study of Black Nephrite from Dahua, Guangxi Province, China

Crystals
Dahua in Guangxi is an important soft jade mining area in southern China. Despite this, research on the nephrite from this region, particularly on the coloring mechanism of black nephrite, remains limited.
Mingying Cui, Mingyue He, Mei Yang, Bijie Peng, Shaokun Wu   +4 more
doaj   +1 more source

Thermodynamic Constraints on H2 Production and Habitability From Mg‐Rich Serpentinites as Mars Analogs

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Serpentinization produces hydrogen and methane through abiotic water‐rock interactions, potentially supporting chemotrophic life in planetary subsurface environments. Serpentine deposits in the Martian Noachian landscapes of Nili Fossae and the Southern Highlands have been considered as potential paleo‐habitable zones. However, the geochemical
Devan M. Nisson, Mohit Melwani Daswani, Emmy B. Hughes, Scott M. Perl, Varsha M. Nair, H. M. T. G. A. Pitawala, Sanjeewa P. K. Malaviarachchi, P. L. Dharmapriya, Meththika Vithanage, Amit Basu Sarbadhikai, Francis Rivera‐Hernández, Suniti Karunatillake   +11 more
wiley   +1 more source

Durability performances of wollastonite, tremolite and basalt fiber-reinforced metakaolin geopolymer composites under sulfate and chloride attack

, 2017
This paper aims to investigate the durability related performances of geopolymer composite materials that synthesized by alkali activation of metakaolin (MK) with reinforcement of wollastonite (WS), tremolite (TR) and short basalt fiber (SBF).
Ren, Daming, Zhang, Zuhua, Yan, Chunjie, Duan, Ping, Li, Lingyao, Yan, Zhongyun   +5 more
core   +1 more source

The origin of Chlorite-Tremolite-Carbonate Rocks Associated with the Thalanga Volcanic-Hosted Massive Sulfide Deposit, North Queensland, Australia

, 2001
The Thalanga polymetallic massive sulfide deposit is hosted by felsic volcanics of the Cambro-Ordovician Mount Windsor subprovince in North Queensland.
Herrmann, W (15490610), Hill, AP (15490628)   +1 more
core  

Potentially toxic elements (PTEs) associated with asbestos chrysotile, tremolite and actinolite in the Calabria region (Italy) [PDF]

, 2020
[EN]Potentially toxic elements (PTEs) hosted in asbestos elongate mineral particles is one of the factors that determines their toxic/pathogenic effects.
Bloise, Andrea, Pereira Gómez, María Dolores, Ricchiuti, Claudia, Punturo, Rosalda   +3 more
core   +1 more source

Chrysotile and tremolite asbestos fibres in the lungs and parietal pleura of Corsican goats.

, 2002
BACKGROUND AND AIMS: Environmental exposures to chrysotile and tremolite from the soil cause pleural plaques and mesothelioma in northeast Corsica. Goats grazing in the contaminated areas inhale asbestos fibres. We used this natural animal model to study
Viallat, J R, Dumortier, Pascal, Broucke, Ingrid, Boutin, Claude, Rey, F, De Vuyst, Paul   +5 more
core   +1 more source