Results 131 to 140 of about 13,016 (258)
New data on mineralogy of granitic pegmatites Mt. Soroch′ya, Southern Urals
Литосфера, 2016 Mineralogy of granitic pegmatites of Mt. Soroch′ya near Zlatoust which ore included in the Upper Riphean metamorphic mica-garnet, staurolite-garnet, and wollastonite-sillimanite-garnet schists of the Kuvash Formation is examined. Zonal pegmatite veins 30-
V. I. Popova +2 more
doaj +2 more sources
Archaeometry, Volume 68, Issue 3, Page 512-526, June 2026.ABSTRACT Since 2000, archaeological excavations have brought to light the sanctuary of Athena in Castro (Apulia, Italy), including terracotta roofs dated between the 6th and 4th centuries bce. Based on their morphological and stylistic features, it is suggested that the terracotta items were manufactured in the Greek colony of Taras (modern Taranto ...
M. M. N. Franceschini +7 more
wiley +1 more source
Matériaux de mullite à microstructure organisée composés d'assemblage muscovite-kaolinite
, 2007 Des matériaux de mullite à microstructure organisée sont réalisés à partir d'assemblages des minéraux muscovite et kaolinite. L'étude par diffraction Rx et de neutrons de la muscovite montre l'effet de la température sur la réduction de l'organisation ...
BLANCHART, Philippe +1 more
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International Journal of Cosmetic Science, Volume 48, Issue 3, Page 549-561, June 2026.The shampoo and conditioner bar formulations enhanced hair gloss, promoting softness, improved cuticle alignment, and effective protection of hair shafts against external aggressors. Findings from mechanical properties measurements indicate that the clay‐containing formulations enhance the mechanical strength of hair, contributing to stronger and more ...
João Pedro Gonçalves de Souza Soares +2 more
wiley +1 more source
Journal of Metamorphic Geology, Volume 44, Issue 5, Page 376-393, June 2026.ABSTRACT The absence of jadeite in regions where subduction of continental crust has been documented by other high‐pressure (HP) or ultrahigh‐pressure (UHP) minerals is striking. This study presents only the second discovery of jadeite in the crystalline rocks of the Erzgebirge, a region known for its occurrences of microdiamond, coesite and omphacite ...
Ondrej Lexa +3 more
wiley +1 more source
Sur quelques occurrences de muscovite en Bretagne.
, 2009 ISSN : 1298-2938International audienceTrès fréquente an Armorique, la muscovite cristallise dans des contextes variés.
Chauris, Louis
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Tracking Dehydration Reactions and Fossil Fluid Flux in Shear Zones Using Garnet Microstructures
Journal of Metamorphic Geology, Volume 44, Issue 5, Page 394-414, June 2026.ABSTRACT Shear zones act as preferential fluid pathways during prograde and retrograde stages of metamorphism. Nonetheless, we still have limited knowledge of the drainage and permeability of natural settings. The preserved signature of fluid in exhumed rocks provides insights into fluid flow during burial and exhumation.
Alessandro Petroccia +7 more
wiley +1 more source
Sedimentology, Volume 73, Issue 4, Page 1225-1243, June 2026.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
Muscovite 40Ar/39Ar geochronology on ten samples from complex-type, rare-metal (e.g., Li, Cs, Ta, Rb, Be, Nb, Sn and W) pegmatites from the Bikita and Mweza pegmatite fields in Zimbabwe yield ages that range from ca. 2622–1940 Ma.
Hofmann, A. +3 more
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Anomalous Thermal Expansion of Muscovite Mica Implanted with Noble Gases
, 1992 Natural phlogopite micas may contain occluded water which gives rise to anomalous reversible thermal expansion behavior at high temperatures. Expansions as much as 200% at 600°C, are observed, when water vapor bubbles form within the mica and expand ...
Xu, Qing
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