Results 91 to 100 of about 26,623 (334)
Metamorphic evolution of sillimanite gneiss in the high-pressure terrane of the Western Gneiss Region (Norway) [PDF]
European Journal of MineralogySillimanite-bearing gneisses in the Romsdal region of the Western Gneiss Region (south Norway) have been investigated to document the presence, formation, composition and petrological evolution of the sillimanite-bearing assemblages. Sillimanite is found
A. K. Engvik, J. Jakob
doaj +1 more source
(Energy related studies utilizing K-feldspar thermochronology) [PDF]
, 1992 In our second year of current funding cycle, we have investigated the Ar diffusion properties and microstructures of K-feldspars and the application of domain theory to natural K-feldspars. We completed a combined TEM and argon diffusion study of the effect of laboratory heat treatment on the microstructure and kinetic properties of K-feldspar.
openaire +2 more sources
Anisotropic pore fabrics in faulted porous sandstones [PDF]
, 2017 Thanks to SEM technician Peter Chung at the University of Glasgow, David Wilde and Peter Greatbatch at Keele University for careful thin section preparation, Chris Wibberley and Tom Blenkinsop for input and Kieran Keith from Harlaw Academy, Aberdeen for ...
Farrell, Natalie, Healy, David
core +1 more source
Solar RRL, EarlyView.A laboratory framework reproduces site‐specific soiling and cleaning dynamics of photovoltaic modules using real dusts from contrasting climates. Accelerated humidity–temperature cycling replicates 1 month of outdoor cementation in only ≈ 1.5 days.
John (Ioannis) A. Tsanakas +10 more
wiley +1 more source
Geochemistry, Geophysics, GeosystemsThe formation, storage, and evolution of granitic magmas are fundamental processes driving the growth of continental crust. While traditionally attributed to crystal fractionation in high‐melt fraction magma chambers, the model invoking low‐melt fraction
Wang Li +5 more
doaj +1 more source
Half a million years of magmatic history recorded in a K-feldspar megacryst of the Tuolumne Intrusive Complex, California, USA [PDF]
, 2020 Melissa Chambers +3 more
openalex +1 more source
Archaeometry, EarlyView.Abstract Kohl was ubiquitous in ancient Egypt and the Middle East, and routinely included among the toiletries deposited in burials. For Egypt, kohl recipes are increasingly well‐studied and known to use a range of inorganic and organic ingredients. Although these are often lead‐based, manganese‐ and silicon‐rich compounds are also attested.
Silvia Amicone +7 more
wiley +1 more source
Colloids and InterfacesFine spodumene particles are challenging to treat by froth flotation and are often discarded. An approach to recover the lithium-bearing mineral is to selectively aggregate fine spodumene into larger sizes that are amenable to recovery by flotation. This
Danni Luo, Wei Sung Ng, George V. Franks
doaj +1 more source
Apollo 15 rake sample microbreccias and non-mare rocks: Bulk rock, mineral and glass electron microprobe analyses [PDF]
Quantitative electron microprobe data of Apollo 15 nonmare rake samples are presented. Bulk analyses of lithic fragments in the nomare rocks (expressed in oxide weight-percent) and the corresponding CIPW molecular norms are given.
Bunch, T. E. +6 more
core +1 more source
Observation of centimetre-scale argon diffusion in alkali feldspars: implications for 40Ar/39Ar thermochronology [PDF]
, 2013 New data from a gem-quality feldspar from Itrongay, Madagascar, record naturally occurring 40Ar/39Ar age profiles which can be numerically modelled by invoking a single diffusion mechanism and show that microtexturally simple crystals are capable of ...
Flude, Stephanie +5 more
core +3 more sources