Information About

Anorthoclase
  CATEGORIES ABOUT MICROCLINE
   
potassium minerals
   
aluminium minerals
   
tectosilicates
   
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  !colspan 2 align=centerOptical properties - Microcline
  colspan 2
  Crystal System: "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/Triclinic" class="copylinks">Triclinic
  Color In "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/PPL" class="copylinks">PPL : Colorless
  "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/Pleochroism" class="copylinks">Pleochroism : N/A
  Habit/Shape: Can Be "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/anhedral" class="copylinks">Anhedral or Euhedral Grains are commonly elongate with a tabular appearance May contain Lamellae which formed from exsolved Albite
  And "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/pericline_twinning" class="copylinks">Pericline Twinning This combination leads to a grid pattern, hence microcline displays Gridiron Twinning Can also display Carlsbad Twinning , simple twins, or lack twinning altogether Lamellae in microcline are discontinuous and "pinch and swell"
  "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/Birefringence" class="copylinks">Birefringence : Up to first order white (roughly 0007)
  Optic Sign: "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/Biaxial" class="copylinks">Biaxial negative
  Alteration: Commonly Alters To "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/sericite" class="copylinks">Sericite or Clay
  Distinguishing Characteristics: "http://wwwinformationdelightinfo/encyclopedia/entry/Vrhbosna/Crystal_twinning" class="copylinks">Gridiron Twinning distinguishes Microcline from other Feldspars Distinguishable from Plagioclase because the lamellae in plagioclase are continuous and do not "pinch and swell"