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www.minsocam.org/ammin/AM63/AM63_981.pdf
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The rhombic section angles and obliquities of triclinic feldspars are simple ... The obliquity, @, is a direct measure of the departure of a triclinic feldspar from the ...
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socrates.berkeley.edu/~eps2/wisc/feldspar.html
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Because triclinic feldspars have nearly monoclinic symmetry, they commonly occur in complex intergrowths of crystals called twins, which mimic the higher ...
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Feldspar - Wikipedia, the free encyclopedia
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en.wikipedia.org/wiki/Feldspar
Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals which make up as ... The plagioclase feldspars are triclinic.
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onlinelibrary.wiley.com/doi/10.1002/pssa.2210090216/pdf
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Lamellae of more potassium-rich monoclinic feldspar and lamellae of more sodium-rich triclinic feldspar are seen. These sodic feldspar lamellae show twin ...
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jsedres.geoscienceworld.org/content/62/5/779.full.pdf
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faster than ordered crystals. Monoclinic feldspar has disordered AI-Si and triclinic feldspar has ordered A1-Si. Diagenetic feldspar has metastable low triclinicity, ...
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www.mineralgallery.co.za/orthoclase.htm
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The high-temperature potassium feldspars, sanidine and orthoclase, are monoclinic in their crystal symmetry; the others are triclinic, although they retain the ...
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www.minersoc.org/pages/education/feldspar-1.pdf
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triclinic symmetry and exhibit considerable solid solution at high T, but very little at low T, when almost all natural feldspars are intergrowths of two or more ...
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www.geosciences.fau.edu/Resources/CourseWebPages/Fall20...
www.geosciences.fau.edu/Resources/CourseWebPages/Fall2011/GLY4200C_F11/(Lab11)_Twiining,_Zoning,_Exsolution_F11.ppt
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Seen in either monoclinic or triclinic feldspars; Carlsbad twins are growth twins ( that is, they form while the crystal is growing); Carlsbad twinning is a type of ...
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www.jstor.org/stable/10.2307/30060177
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Two different modifications of potash feldspar-triclinic and monoclinic-exist. Between the two members, i.e., the mono- clinic and the one with maximum deviation ...
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