Myrmekite - Wikipedia
Myrmekite is a vermicular, or wormy, intergrowth of quartz in plagioclase. The intergrowths are microscopic in scale, typically with maximum dimensions less than 1 millimeter. The …
Myrmekite - ALEX STREKEISEN
Myrmekite is an intergrowth of branching rods of quartz set in a single crystal of plagioclase, neighboring rod of quartz have the same lattice orientation and extinguish together. Myrmekite …
Mechanisms of myrmekite formation: case study from the …
Nov 4, 2014 · Myrmekites are conspicuous microstructures of quartz–feldspar intergrowth. They are widespread in felsic magmatic and metamorphic rocks and have attracted the attention of …
Myrmekite | Igneous Rocks, Granite & Gneiss | Britannica
myrmekite, irregular, wormy penetration by quartz in plagioclase feldspar; these wartlike, wormlike, or fingerlike bodies may develop during the late stages of crystallization of igneous …
What is Myrmekite? | Geology Tutorials, Articles, Photos
Myrmekite (myr’-me-kite) is an intergrowth of plagioclase feldspar (generally oligoclase) and vermicular quartz, generally replacing potassium feldspar, formed during the later stages of …
Myrmekite: Mineral information, data and localities. - mindat.org
About Myrmekite Hide. An intergrowth of plagioclase feldspar (commonly oligoclase) and vermicular quartz, generally replacing potassium feldspar; formed during the later stages of …
Deformation-induced myrmekite formation may act as an important facilitator of feldspar grain-size reduction (Ree et al. 2005) and is an eficient reaction-softening mechanism within granitic …
Myrmekite — one hundred years later - ScienceDirect
Jan 1, 1974 · Myrmekite, first detected by Michel-Lévy in 1875 and named by Sederholm in 1899, is an intergrowth between vermicular quartz and (sodic) plagioclase situated next to potash …
MYRMEKITE - California State University, Northridge
1. Origin Of Myrmekite And Metasomatic Granite. 2. Replacement Of Primary Plagioclase By Secondary K-feldspar And Myrmekite. 3. Microscopic And Megascopic Relationships For …
Myrmekite, the vermicular intergrowth of quartz in plagioclase, is considered by some geologists to form by replacement of K-feldspar by Ca- and Na-bearing fluids.