Results 81 to 90 of about 7,479 (200)
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.Abstract Rift zones, both on land and submarine, are key pathways for mantle‐derived CO2 degassing to the Earth's surface. Fixation of CO2 as carbonates plays a critical role in regulating these emissions. This study examines carbon abundance and isotope compositions in hydrothermal fluids, altered rocks, and carbonates from geothermal systems in both ...
Barbara I. Kleine‐Marshall +23 more
wiley +1 more source
Presence of asbestiform minerals in lightweight concretes: their environmental impact [PDF]
, 2015 Lightweight concrete has a lower unit weight than conventional concrete and a high thermal insulation capacity. It is manufactured with either natural or artificial lightweight aggregates. Vermiculite, one of the natural lightweight aggregates used, is a
Bonalumi, Aldo +4 more
core
Archaeometry, Volume 67, Issue 5, Page 1247-1266, October 2025.Abstract This research represents the most extensive characterisation of Roman mosaic tesserae (tiles) from Aquileia, Italy, to date, examining 153 specimens. The study aimed to identify the lithotypes used in mosaics production through a multi‐analytical approach, which included colorimetric analysis, polarised light microscopy and scanning electron ...
Neva M. E. Stucchi +5 more
wiley +1 more source
The Green Spots in Nephrite—Grossularite
Yankuang ceshi, 2013 Recently, a variety of nephrite with emerald green spots appeared in the nephrite market. There is no report on the mineral composition and green spots for this type of nephrite. Under a higher magnification optical microscope, the complete crystal shape,
FENG Xiao-yan +3 more
doaj
When detection and quantification of mineral fibres in natural raw materials are at their limit – the case of a clay from the Gomsiqe–Puka mining area (Albania) [PDF]
European Journal of MineralogyIn today's global market, the movement of raw materials and goods in the free global market can lead to unintended consequences. One significant concern is the potential presence of contaminants and carcinogens, particularly when products originate from ...
A. F. Gualtieri +12 more
doaj +1 more source
Variations of physico-mechanical, mineralogical and geochemical properties of marble under the influence of weathering [PDF]
, 2019 Purpose. To investigate the physico-mechanical, mineralogical and geochemical properties variations of Igbeti marble, south-western Nigeria under the influence of weathering. Methods. About twenty representative samples were collected at a varying depth
Lawal, A.I., Ogunsola, N.O., Saliu, M.A.
core +1 more source
Stability of Actinolite on Venus [PDF]
Venus currently has a hostile surface environment with temperatures of ~460 C, pres-sures near 92 bars, and an atmosphere composed of super critical CO2 hosting a myriad of other potentially reactive gases (e.g., SO2, HCl, HF).
Doehne, C. J. +10 more
core +1 more source
Prismatic to asbestiform offretite from Northern Italy. Occurrence, morphology and crystal-chemistry of a new potentially hazardous zeolite [PDF]
, 2018 A multi-methodological approach, based upon field investigation, morphological characterization, chemical analysis and structure refinement was applied to different samples of fibrous offretite, a new potentially hazardous zeolite recently discovered in ...
Arcangeli, Pierluca +6 more
core +3 more sources
The genesis and tectonic significance of chromitite-bearing serpentinites in southern NSW [PDF]
, 1998 University of Technology, Sydney. Faculty of Science.The Tumut Serpentinite Province consists of four major serpentinite belts and numerous small serpentinite bodies, that occupy a long narrow tract within the Lachlan Fold Belt of southern NSW.
Graham, IT
core
Mineral-petrochemical wallrock alteration of rocks in Bericul gold-ore deposit (Kuznetsk Alatau) [PDF]
, 2004 The distribution of mineral associations in near-veined zonal propylite-beresite metasomatic columns of mesothermal Bericul gold-ore deposit was analyzed.
I Kucherenko +11 more
core +1 more source