Results 41 to 50 of about 23,238 (164)
XX XX ABSTRACT The pharaoh's serpent reaction, the thermodecomposition of mercury thiocyanate in air, is a classic chemical demonstration. We analyse and characterize the reaction products, composed of two different phases, graphitic carbon nitride, C3${\rm C} _3$N4${\rm N} _4$, and metacinnabar, HgS.
Carlos Pimentel +4 more
wiley +1 more source
Los xenolitos granulíticos del volcán de La Encomienda (Campo Volcánico de Calatrava) representan un conjunto de composición félsica peralumínica.
David Orejana García +2 more
doaj +1 more source
Detrital modes in sedimentoclastic sands from first-order streams of the Iberian Range, Spain: the effect of source lithology [PDF]
Depto. de Mineralogía y PetrologíaFac.
Arribas Mocoroa, José +2 more
core
Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès +10 more
wiley +1 more source
Planetología reciente. Planetas terrestres y extrasolares [PDF]
Depto. de Mineralogía y PetrologíaFac.
Anguita, Francisco, Ruiz Pérez, Javier
core
Chemische Gärten sind selbstorganisierte abiotische Strukturen mit „lebensähnlichen” Formen. Hier zeigen wir, dass solche Prozesse auch nach Zugabe konzentrierter Sulfatlösungen zu festen Calciumsalzen ablaufen und sogenannte Gipsgärten ergeben. Die dafür nötigen Bedingungen sind weitgehend kompatibel mit den geochemischen Verhältnissen auf dem frühen ...
Selina Reigl +5 more
wiley +1 more source
Este estudio presenta una evaluación mineralógica semi-cuantitativa de las cortezas de meteorización no niquelíferas en las áreas de Baconal, El Culebro, Caimanes y Farallones en la región nororiental de Cuba.
Gerardo Orozco-Melgar +3 more
doaj
El estuario del río Guadiana se encuadra en el Sur de la Península Ibérica, concretamente en la frontera entre España y Portugal; el río atraviesa en su último tramo la Faja Pirítica Ibérica, donde se localizan importantes yacimientos mineros que han ...
Angel Moreno-Moreno +3 more
doaj +1 more source
Sedimentary evolution and provenance of the Last Fluvial episodes of the Cameros Basin (Lower Cretaceous, North Spain) [PDF]
Depto. de Mineralogía y PetrologíaFac.
Arribas Mocoroa, José +3 more
core
Chemical gardens are self‐assembled architectures with “life‐like” morphologies that form in the absence of any biological activity. Here we show that such structures can also be obtained by contacting reservoirs of calcium and sulfate ions, under conditions that plausibly emulate those prevailing on early Mars.
Selina Reigl +5 more
wiley +1 more source

