Microcline - Wikipedia
WEBMicrocline (KAlSi 3 O 8) is an important igneous rock -forming tectosilicate mineral. It is a potassium -rich alkali feldspar. Microcline typically contains minor amounts of sodium. It is common in granite and pegmatites. Microcline forms during slow cooling of orthoclase; it is more stable at lower temperatures than orthoclase.
Microcline Mineral Physical - Optical Properties, Uses - Geology …
WEBApr 23, 2023 · It can be colorless, white, cream to pale yellow, salmon pink to red, or bright green to blue-green. Microcline forms short prismatic or tabular crystals that are often of considerable size: single crystals can weigh several tons and reach yards in length.
The Mineral microcline - The Mineral and Gemstone Kingdom
WEBMicrocline is polymorphous with Orthoclase and Sanidine. These three minerals form the Potassium Feldspar group. They are almost identical in physical properties, and sometimes it is impossible to distinguish one another without x-ray analysis. The only difference between them is their crystal structure.
Microcline Mineral Data
WEBGladstone-Dale: CI meas = 0.01 (Superior) - where the CI = (1-K PDmeas /K C) CI calc = 0.01 (Superior) - where the CI = (1-K PDcalc /K C) K PDcalc = 0.2038,K PDmeas = 0.2038,K C = 0.2058. Ncalc = 1.53. Optical Data: Biaxial (-), a=1.518, b=1.522, g=1.525, bire=0.0070, 2V (Calc)=80, 2V (Meas)=77-84.
Microcline | Potassium Feldspar, Orthoclase, Alkali Feldspar
WEBMicrocline is the form of potassium feldspar that is stable at the lowest temperatures. Its structure differs from that of orthoclase because of a different distribution of silicon and aluminum atoms in its aluminosilicate crystal framework. Microcline exhibits a …
Microcline: Mineral information, data and localities. - mindat.org
WEBFormula: K (AlSi3O8) Colour: White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green. Lustre: Vitreous. Hardness: 6 - 6½. Specific Gravity: 2.54 - 2.57. Crystal System: Triclinic. Member of: K Feldspar Group > Alkali Feldspar Group > Feldspar Group. Name:
Microcline | NOVA Mineralogy - nvcc.edu
WEBThin Section GigaPans. Microcline, plane polars. Microcline, crossed polars. Microcline, PPL. Microcline, XPL. Further Reading. Microcline at webmineral.com. Microcline at mindat.org.
Microcline - an overview | ScienceDirect Topics
WEBIf the rocks are geologically very old, microcline cannot be found with feldspar because eventually orthoclase is recrystallized in microcline. Microcline is a regular and essential ingredient of sandstone, especially feldspar arenaceous rocks and feldspar graywacke ( Sections 5.5.3.2 and 5.5.3.3 Section 5.5.3.2 Section 5.5.3.3 ).
Microcline - Sandatlas
WEBMicrocline is a very common rock-forming mineral. It belongs to the feldspar group. It is one of three K-feldspars (K means Potassium ). The other two are orthoclase and sanidine. The chemical formula of K-feldspars: KAlSi 3 O 8, but they usually contain sodium as well which replaces potassium. Microcline with perthitic exsolution.
Microcline - Wikiwand
WEBMicrocline (KAlSi 3 O 8) is an important igneous rock -forming tectosilicate mineral. It is a potassium -rich alkali feldspar. Microcline typically contains minor amounts of sodium. It is common in granite and pegmatites. Microcline forms during slow cooling of orthoclase; it is more stable at lower temperatures than orthoclase.
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