Growth histories and residence times of crystals in magmatic systems can be revealed by studying crystal sizes, size distributions and shapes. In this contribution, serial sectioning has been employed on a sample of porphyritic rhyolite from a Permo-Carboniferous laccolith from the Halle Volcanic Complex, Germany, to reconstruct the distribution of felsic phenocrysts in three dimensions in orde...

The pegmatites of the Seridó Pegmatite Province show a granitic bulk mineralogical composition, composed K-feldspar, albite, quartz, muscovite and occasionally biotite. Detailed studies major minerals are scarce. There is, on other hand, relatively larger number published contributions concerning pegmatite accessory minerals. This field trip guide focus mainly occurrence locations these last mi...

This article describes an accurate subPico flowmeter bifurcatedin to liquid and gas flowrates less than 1mol/s for both MEMS/NEMS and cryogenic technology applications. The MEMS/NEMS are described as either two Gauges (instrument), or quartz fluctuating forks, even if the liquid or gas flows through an element, as well as cryogenic technology consisting of arrays of e...

We report on a modified chemical vapor transport (CVT) methodology for the growth of pure and intercalated Zr, Ti, Hf dichalcogenide single crystals, e.g. ZrTe2, Gd0.05ZrTe2, HfTe2, Cu0.05TiTe2. While most common method CVT is carried out in quartz tubes subjected to temperature gradient between charge location, using this isothermal-CVT (ICVT) takes place isothermally sealed placed horizontall...

In a previous paper (King, Mohanty, Harrison, and Nagelschmidt, 1953), we showed that removal of an amorphous " high-solubility layer" from the surface of quartz particles with hydrofluoric acid appeared to enhance their fibrosis-producing capacity rather than to diminish it. Although the HFtreated quartz had been repeatedly washed, and even electro-dialyzed, it had at least as much, and usuall...

The solubility of corundum was measured at 800 °C and 10 kbar in NaCl–H2O–SiO2 fluids over NaCl mole fractions (XNaCl) of 0 to 0.5 and SiO2 concentrations of zero to quartz or albite+melt saturation, depending on XNaCl. Experiments were performed in a piston-cylinder apparatus. Dissolved Al2O3 and SiO2 were determined by weight losses of corundum and quartz crystals, or by bulk compositions of ...

In this study the formation of polygenetic High Tatra granitoid magma is discussed. Felsic and mafic mixing mingling processes occurred in all batches composing pluton are documented by typical textural assemblages, which include: microgranular enclaves (MME), clots, felsic quartz-plagioclase-titanite ocelli, biotite-quartz poikilitic plagioclase crystals, chemically zoned K-feldspar phenocryst...