Flame perthite
Webdeveloped extensive flame perthite in K-feldspar. Albite flames show large variation in size, shape and abundance. Field, petrographic and chemical evidence suggests … WebSince flame growth is controlled by the imposed differential stress and not by strain in the host rock, flame perthite has potential as a palaeostress-direction indicator. Albite flames result from the replacement of K-feldspar by albite through alkali exchange. In flame perthites from deformed granites within the Grenville Front Tectonic Zone ...
Flame perthite
Did you know?
WebMar 28, 2024 · The subsolvus biotite granite is characterized by myrmekitic texture, dominantly flame perthite texture, minimal albitization, and by plagioclase zoning (Fig. 4a, b and c). The alkali-feldspar granites, on the other hand, are characterized by a single perthitic K-feldspar hosting exsolved albite. http://www.yyfangchan.com/wen/zuowen/1378948.html
http://stoneplus.cst.cmich.edu/perthite.htm WebJan 1, 2002 · Flame perthite bearing K-feldspar is common. Braid and vein perthites occur occasionally. Paleopiezometry estimation indicates that flame perthite formed under the influence of low to moderate ...
WebPetrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the WebFlame perthite bearing K-feldspar is common. Braid and vein perthites occur occasionally. Paleopiezometry estimation indicates that flame perthite formed under the influence of low to moderate ...
WebJul 7, 2024 · It is found only in young volcanic discharges or (volcanic) rocks (rhyolite, trachyte and dacite). It forms by the crystallization of lava at high temperatures and its rapid cooling. Sanidine crystallizes orthoclase …
WebMineralogical Society of America - Mineralogy, Petrology and ... date difference in redshifthttp://www.labotka.net/310/Atlas/Plates/Perthite.html bitzlato crypto exchangeWebAbstract Microprobe analyses of feldspars in granite mylonites containing flame perthite give compositions that invariably plot as three distinct clusters on a ternary feldspar diagram: orthoclase (Or92–97), albite and oligoclase-andesine. The albite occurs as grains in the matrix, as flame-shaped lamellae in orthoclase, and in patches within ... bitz law officeWebFlame perthite occurs locally in high-grade migmatitic gneisses of pelitic composition at Cooma, SE Australia. It is developed best in leucosomes and rocks in which cordierite is largely unaltered. bitz intermediate homepageWebIn addition, development of fine to medium grained micro-perthite (patches and strings of albite in microcline) viz., vein, string, patchy and flame perthite (Fig. 3h) suggests deuteric activity ... bitzlato founder arrestedWebSep 1, 1996 · Copyright 1996 Eisevier Science Ltd INTRODUCTION Flame perthite (Fig. 1) is one of many morphologies of K-feldspar and albite intergrowths, but differs from most other perthite morphologies in that it is generally found in deformed quartzo-feldspathic rocks (e.g. Dat et al. 1978, Passchier 1982, Stel 1986). bitz intermediate school websitehttp://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1999/Vernon_p1760-1765_99.pdf bitz n pieces wedding band