Walker, F.D.L., Lee, M.R., Parsons, I. The streak of Alkali Feldspar Granite is white whereas its fracture is not available. Lee, M.R., Parsons, I. Carnegie Institution of Washington publication 634: 173-183. Yund, R.A. (1984) Alkali feldspar exsolution: kinetics and dependence on alkali interdiffusion. Rocks with hardness 1-3 are soft rocks from 3-6 are medium hardness rocks and 6-10 are hard rocks. The plagioclase feldspars include members of the albite-anorthite solid-solution series. (1988) Argon-loss by alkali feldspars. Compositions of foremost elements in commonplace feldspars may be expressed in terms of 3 endmembers: potassium feldspar (K-spar) endmember KAlSi3O8, albite endmember NaAlSi3O8, anorthite endmember CaAl2Si2O8. Lee, M.R., Parsons, I. In A.W. American Mineralogist: 43: 872-889. Giletti, H.S. Worden, R.H., Walker, F.D.L., Parsons, I., Brown, W.L. The abundance of K-spar gives the rock a predominant pink to reddish hue; peppered with minor amounts of black minerals. Journal of Sedimentary Research: 75: 921-942. Contributions to Mineralogy and petrology: 104: 507-515. (1999) 40Ar/39Ar thermochronology using alkali feldspars: real thermal history or mathematical mirage of microtexture Contributions to Mineralogy and Petrology: 136: 92-110. Kontak, D.J., Martin, R.F., Richard, L. (1996) Patterns in phosphorus enrichment in alkali feldspar, South Mountain batholith, Nova Scotia, Canada. - Indicates mineral may be doubtful at this locality. Showing 75 significant localities out of 23,053 recorded on mindat.org. American Mineralogist: 71: 1285-1296. Current server date and time: November 30, 2020 00:57:14 (1998) The role of intragranular microtextures and microstructures in chemical and mechanical weathering: direct comparison of experimentally and naturally weathered alkali feldspars. Solid answers between K-feldspar and albite are referred to as “alkali feldspar”. Geochimica et Cosmochimica Acta: 52: 1097-1112. Rocks are rated on the on the Moh's Hardness Scale which rates the rocks on the scale from 1 to 10. (1994) The microstructure of perthitic alkali feldspars revealed by hydrofluoric acid etching. Common feldspars include orthoclase (KAlSi3O8), albite (NaAlSi3O8), and anorthite (CaAl2Si2O8). Smith, J.V., MacKenzie, W.S. Canadian Mineralogist: 24: 615-623. Fenn P M, Brown G E (1977) Crystal structure of a synthetic, compositionally intermediate, hypersolvus alkali feldspar: evidence for Na, K site ordering Zeitschrift fur Kristallographie 145 124-145: 1977: Synthetic: 0: 293: 0020546: Orthoclase It is a dense rock with a phaneritic texture. In: Feldspars and Feldspathoids: Structure, Properties and Occurrences (W.L. Feldspar is the name of a large group of rock-forming silicate minerals that make up over 50% of Earths crust. European Journal of Mineralogy: 8: 805-824. : 18: 271-278. The specific gravity of Alkali Feldspar Granite is 2.6-2.7. Feldspar minerals have very similar structures, chemical compositions, and physical properties. (1988) Enthalpies and volumes related to K-Na mixing and Al-Si order/disorder in alkali feldspars. Brown, ed.) Ser. Reidel Publishing Co., Dordrecht, The Netherlands (281-315). Contributions to Mineralogy and petrology: 116: 360-364. Physical properties of rocks are used to identify the type of rocks and to discover more about them. Rev. Physical properties of rocks play an important role in determining its applications in various fields. Yoder, Jr., R.A. Yund, Eds., Geochemical Transport and Kinetics. You can also know all the list of rocks in Opaque Rocks, Translucent Rocks and Transparent Rocks. ┗ Albite is an example of a feldspar that can be considered both, alkali as well as plagioclase. Therefore, this mineral is … C 137. Uses of Feldspar ┗ Feldspar contains alumina, which results in an increase in the strength of the manufactured product. Quarry), FitzGerald J D, Parise J B, Mackinnon I D R (1986), Hogarth Ranges, northern New South Wales, Australia, Armbruster T, Burgi H B, Kunz M, Gnos E, Bronnimann S, Lienert C (1990), Meneghinello E, Alberti A, Cruciani G (1999), Kroll H, Flogel J, Breit U, Lons J, Pentinghaus H (1991), Phillips M W, Colville A A, Ribbe P H (1971), Blasi A, De Pol Blasi C, Zanazzi P F (1987), Dal Negro A, De Pieri R, Quareni S (1978), St. Gotthard, Switzerland, known as Spencer B, variety adularia, St. Gotthard, Switzerland, known as Spencer C, Angel R J, Ross N L, Zhao J, Sochalski-Kolbus L, Kruger H, Schmidt B C (2013), Tseng H-Y, Heaney P J, Onstott T C (1995), Kimata M, Saito S, Shimizu M, Iida I, Matsui T (1996), Deubener J, Sternitzke M, Mueller G (1991), Scambos T A, Smyth J R, McCormick T C (1987), Buck Claim Pegmatite, Bernic Lake, Manitoba, Canada, Alban Hills, Rome Province, Latium, Italy, Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H (2004), Brown G E, Hamilton W C, Prewitt C T, Sueno S (1974), Marcille I M, Organova N I, Rozhdestvenskaya I V (1993), Marsii I M, Organova N I, Rozhdestvenskaya I V (1993), Koksha Valley (Kokscha Valley; Kokcha Valley), Ladjuar Medam (Lajur Madan; Lapis-lazuli Mine; Lapis-lazuli deposit), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Hog Heaven Mining District (Flathead Mining District), Kingsland Granite Company Quarry (Petrick Quarry). This map shows a selection of localities that have latitude and longitude coordinates recorded. Luster of Alkali Feldspar Granite is the interaction of light with the surface of Alkali Feldspar Granite. Physical Properties of Alkali Feldspar Granite Physical properties of rocks are used to identify the type of rocks and to discover more about them. Lee, M.R., Parsons, I. Fitz Gerald, J.D., Parsons, I., Cayzer, N. (2006) Nanotunnels and pull-aparts: defects of exsolution lamellae in alkali feldspars.