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Alkali Feldspar

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Synonym of:Albite, Anorthoclase, Microcline, Orthoclase, Sanidine


Feldspar Group minerals rich in Potassium or Sodium.

Classification of Alkali Feldspar

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Other Names for Alkali Feldspar

Other Languages:
Norwegian (Bokmål):Alkalifeltspat
Kalinatronfeltspat

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alkali Feldspar

Reference List:

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Smith, J.V. and MacKenzie, W.S. (1958) Alkali feldspars. IV. The cooling history of high-temperature sodium-rich feldspars. American Mineralogist: 43: 872-889.

Yund, R.A. (1974) Coherent exsolution in the alkali feldspars. In A.W. Hofmann, B.J. Giletti, H.S. Yoder, Jr., R.A. Yund, Eds., Geochemical Transport and Kinetics. Carnegie Institution of Washington publication 634: 173-183.

Yund, R.A. and Tullis, J. (1983) Subsolidus phase relations in the alkali feldspars qwith emphasis on coherent phases. In P.H. Ribbe, Ed., Feldspar Mineralogy, 2: 141-176. Reviews in Mineralogy, Mineralogical Society of America, Chantilly, Virginia.

Yund, R.A. (1984) Alkali feldspar exsolution: kinetics and dependence on alkali interdiffusion. In: Feldspars and Feldspathoids: Structure, Properties and Occurrences (W.L. Brown, ed.) NATO Adv. Study Inst. Ser. C 137. Reidel Publishing Co., Dordrecht, The Netherlands (281-315).

Fleet, M.E. (1986b) Lattice theory and transformation twinning in alkali feldspar. Canadian Mineralogist: 24: 615-623.

Su, Shu-Chun, Ribbe, P.H., and Bloss, F.D. (1986) Alkali feldspars: structural state determined from composition and optic axial angle 2V. American Mineralogist: 71: 1285-1296.

Hovis, G.L. (1988) Enthalpies and volumes related to K-Na mixing and Al-Si order/disorder in alkali feldspars. Journal of Petrology: 29: 731-763.

Parsons, I., Rex, D.C., Guise, P., and Halliday, A.N. (1988) Argon-loss by alkali feldspars. Geochimica et Cosmochmica Acta: 52: 1097-1112.

Worden, R.H., Walker, F.D.L., Parsons, I., and Brown, W.L. (1990) Development of microporosity, diffusion channels and deuteric coarsening in perthitic alkali feldspars. Contributions to Mineralogy and petrology: 104: 507-515.

Evangelakakis, C., Kroll, H., Voll, G., Wenk, H.-R., Meisheng, H., and Kopcke, J. (1993) Low temperature coherent exsolution in alkali feldspars fro high-grade metamorphic rocks of Sri Lanka. Contributions to Mineralogy and Petrology: 114: 519-532.

Waldron, K.A., Lee, M.R., and Parsons, I. (1994) The microstructure of perthitic alkali feldspars revealed by hydrofluoric acid etching. Contributions to Mineralogy and petrology: 116: 360-364.

Lee, M.R. and Parsons, I. (1995) Microtextural controls of weathering of perthitic alkali feldspars. Geochimica et Cosmochimica Acta: 59: 4465-4488.

Walker, F.D.L., Lee, M.R., and Parsons, I. (1995) Micropores and micropermeable texture in alkali feldspars: geochemical and geophysical implications. Mineralogical Magazine: 59: 505-534.

Lee, M.R. and Parsons, I. (1997a) Compositional and microtextural zoning in alkali feldspars from the Shap granite and its geochemical implications. Journal of the Geological Society of London: 154: 183-188.

Lee, M.R. and Parsons, I. (1997b) Dislocation formation and albitization in alkali feldspars from the Shap granite. American Mineralogist: 82: 557-570.

Lee, M.R., Hodson, M.E., and Parsons, I. (1998) The role of intragranular microtextures and microstructures in chemical and mechanical weathering: direct comparison of expermentally and naturally weathered alkali feldspars. Geochimica et Cosmochmica Acta: 62: 2771-2788.

Parsons, I., Brown, W.L., and Smith, J.V. (1999) 40Ar/39Ar thermochronology using alkali feldspars: real thermal history or mathematical mirage of microtexture Contributions to Mineralogy and Petrology: 136: 92-110.

Visocekas, R. and Zink, A. (1999) Use of the far infrared TL emission band of alkali feldspars for dosimetry and dating. Quaternary Sci. Rev.: 18: 271-278.

Parsons, I., Thompson, P., Lee, M.R., and Cayzer, N. (2005) Alkali feldspar microtextures as provenance indicators in siliciclastic rocks and their role in feldspar dissolution during transport and diagenesis. Journal of Sedimentary Research: 75: 921-942.

Fitz Gerald, J.D., Parsons, I., and Cayzer, N. (2006) nanotunnels and pull-aparts: defects of exsolution lamellae in alkali feldspars. American Mineralogist: 91.

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