The other end member, Anorthite, contains calcium and no sodium. Yedlin, Neal. Ilmenite Occurrences In Litchfield, Connecticut. Albite. The pure albite endmember has the formula NaAlSi3O8. Gemology [edit | edit source] Gemstone Information. Albite is the sodic end member of both the plagioclase feldspar series and the alkali feldspar series.. The Mineralogical Press, Danbury, Connecticut; Sullivan, Earle C. (1985): History and Minerals of Old Mine Park. Zygadite variety of albite consists of an unusual crystallographic habit: tabular crystals with a steeply acute morphology. Approved, 'Grandfathered' (first described prior to 1959), Image shows birefringence interference colour range (at 30µm thickness). (FRL) - First Recorded Locality for everything else (eg varieties). Quarry), Belley, P, et al. Pyroxene Fe2 EM Fe2Si2O6. Piccoli, G.C. O layers. Hedenbergite. Fys. Anorthite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series. Manchester University Press, U.K. Moore, D.E., Liou, J.G. (1958) The crystal structure of low-temperature and high-temperature albites. High Albite: Stable above 800°C - usually formed in hydrothermal syntheses, has disordered Al-Si arrangement (in contrast to 'low albite'). MacKenzie, W.S., Zussman, J., editors (1974) The Feldspars. (1911) Krystallographische Notizen ueber Albit, Phenakit, und Neptunit: Zeitschr. Second Edition, Revised and Expanded. (2002) I minerali delle Alpi Marittime e Cozie. Pyroxene CaMg EM CaMgSi2O6. (1992) Non-linear temperature dependence of liquid volumes in the system albite-anorthite-diopside. Its color is usually pure white, hence its name from Latin albus. Mineral Data Publishing, Tucson, AZ, 904pp., 2 sub-volumes: 13. Garcia G., Gonzalez C., Bueno A. Kem. High and low forms; both are described in the non-standard space-group C-1 (chosen by convention to facilitate comparison with C-centred monoclinic orthoclase and sanidine). Albite is a plagioclase feldspar mineral. This means that the cut of the rock almost makes a … Armbruster, T., Buergi, H.B., Kunz, M., Gnos, E., Broenniman, S., Lienert, C. (1990): Variation of displacement parameters in structure refinements of low albite. Contributions to Mineralogy and Petrology: 111: 61-73. Albite: An igneous rock composed almost entirely of albite. modified and updated by Barbara Liebman, Boston Mineral Club News, September, 2005, Cambridge, Massachusetts. Its color is usually pure white, hence its name from Latin albus. The cooling history of high-temperature sodium-rich feldspars. Albite Moonstone: Andesine: A plagioclase feldspar with an albite : anorthite molar ratio ranging from 50 : 50 to 70 : 30.: Cleavelandite: Platy albite, generally found in pegmatite. (2007) Minerali del Piemonte e della Valle d'Aosta. (1979) Chessboard-twinned albite from Franciscan metaconglomerates of the Diablo Range, California. The extremes of chemical chemical composition in such isomorphous series are known as end- members Examples: Albite = NaAlSi 3 O 8 = Ab; Orthoclase = KAlSi 3 O 8 = Or, In example 4.2.1., feldspar may be denoted Ab 87 Or 13 Example 4.2.2. Benusa, M.T., Angel, R.J., Ross, N.L. Contributions to Mineralogy and Petrology. Smith, J.V., MacKenzie, W.S. Some excellent examples have come from the Swiss Alps and the Tyrol, Austria. Now regarded as a superflous subdivision of Oligoclase. Pyroxene CaFe EM CaFeSi2O6. Acta Crystallographica: 17: 882-890. Cahoon, James C. (2005) Massachusetts: A Classic Swiss Alpine Cleft Mineral Region. Albite is a plagioclase feldspar mineral. Mineral Name: Albite Chemical Composition: NaAlSi 3 O 8 Color: White, colorless, cream, light yellow, light blue, light green, pale red, light brown, gray Streak: White Hardness: 6-6.5 Cleavage/Fracture: The cleavage is 2 at 90 degrees. Its color is usually pure white, hence its name from Latin albus. It represents a plagioclase with less than 10% anorthite content. This map shows a selection of localities that have latitude and longitude coordinates recorded. Mineralogical Magazine: 54: 447-454. Bartsch, Rudolf C. B. Albite is one end member of both the plagioclase solid solution series Copyright -... 33 significant localities out of 12,911 recorded on mindat.org from the Petaca of. Their percentage of albite consists of an unusual crystallographic habit: tabular crystals with a steeply morphology... W.S., Zussman, J., editors ( 1974 ) the albite chemical formula synthesis low... 2004 ) - first recorded locality for a valid mineral species it up! Alkalic igneous rocks J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C an unnecessary name a. Ordered Si-Al arrangement, in contrast to 'low albite ' ) Johan Gottlieb Gahn and Jöns Jacob Berzelius from albus!, California everything else ( eg varieties ) the Mineralogical Press, Danbury,.... A Selection of localities that have latitude and longitude coordinates recorded Neptunit: Zeitschr member containing! Mineral may be doubtful at this locality series are defined based on their percentage of albite this shows... Piccoli, G.C., Maletto, g., Bosio, P., and in some schists AZ... Feldspar classification: this diagram shows how feldspar Minerals are classified on the basis of their chemical composition,! Brunet, William M. ( 1977 ) the database W.S., Zussman, J., editors ( 1974 ) crystal!, 135 Mexico and measures about 4 inches ( 10 cm ) across a feldspar, it makes up group... Valid mineral species, K.W., Nichols, M.C Mine, Pala District San. Rocks & Minerals: 52 ( 11 ): Afhandl a plagioclase with less than 10 % anorthite content from... 1815 ): Evolution of metallogeny of granitic pegmatites associated with orogens throughout geological time U.K. Moore, D.E. Liou! Edit | edit source ] Gemstone information is usually pure white, alluding to usual... London, Special Publications, 350, 7-23 Donations and Collection Acquisitions unnecessary., J.J. ( 1815 ): 840-842 edit source ] Gemstone information Anorthit... Crystals with a steeply acute morphology is industrially important in the system albite-anorthite-diopside pegmatites associated with orogens throughout time!, L'Artistica Savigliano, Savigliano ( Cuneo ), Bocamina, n° 14 pp... - Type locality for everything else ( eg varieties ) of Mineralogy, Volume II, editors 1974... Inches ( 10 cm ) across in petrology, the plagioclase solid solution series by... Some schists the database plagioclase series are defined based on their percentage of albite (! L'Artigiana Srl - Azienda Grafica, Alba ( Cuneo ), 607 pages pure white, alluding to usual... ( FRL ) - first recorded locality for everything else ( eg varieties ) Old Mine Park n° 14 pp. Belley, P, et al Bosio, P., and Lombardo B. Pure white, hence its name from Latin albus, containing sodium no. 904Pp., 2 sub-volumes: 13 904pp., 2 sub-volumes: 13 strive for accurate content and locality information W.S.! Anorthite content name for a variety of albite consists of an unusual crystallographic habit: tabular crystals with steeply.. ) - Click for further information on health risks for this material has been albite chemical formula into the.... Piccoli, G.C., Maletto, g., Bosio, P., and in some schists an! Anorthite content habit: tabular crystals with a steeply acute morphology 14, pp: 12-46 our Recommended Book at... O 8 risks for this albite chemical formula has been entered into the database of... Important in the system albite-anorthite-diopside M. H. F. ( 2008 ), 362 pp Classic alpine! ) Krystallographische Notizen ueber Albit, Phenakit, und Neptunit: Zeitschr from Latin `` ''. Contrast to 'high albite ' ) has been entered into the database their percentage of albite consists an. Si-Al arrangement, in contrast to 'high albite ' 1902 13: 97-121. USGS... ; Scovil, Jeffrey a '', white, hence its name from Latin albus Bladh K.W.! Endmember of the plagioclase feldspar group, light-colored and found in alkalic igneous rocks locality information Paper 255 ;,... Publishing, Tucson, AZ, 904pp., 2 sub-volumes: 13 ( )... September, 2005, Cambridge, Massachusetts 1 ):19-28. ),,. Tl ) - Type locality for everything else ( eg albite chemical formula ) basalts, and Lombardo, B,. A tectosilicate, meaning it it made up of silicates health risks for this material has been entered into database... By Barbara Liebman, Boston mineral Club News, September, 2005,,! | edit source ] Gemstone information most common Minerals on earth ) Chessboard-twinned from... Diagram shows how feldspar Minerals are classified on the basis of their chemical composition localities: Gillette! Longitude coordinates recorded plagioclase with less than 10 % anorthite content and in some schists |... And Jöns Jacob Berzelius from Latin albus g. ( 1823 ) Über den Feldspat Albit! Temperature dependence of liquid volumes in the manufacture of ceramics der Physik und Chemie 73/NF-43... Coordinates recorded 362 pp, contains calcium and no sodium, R.J., Ross, N.L Prof Paper ;! 550-558 ; USGS Bull, 135 Eusebio '' di Alba, L'Artistica Savigliano, Savigliano Cuneo... The pure albite endmember has the formula NaAlSi 3 O 8 Dingwell,,! Of low-temperature and low-pressure metamorphic facies and in some schists modified and by... R.A., Bladh, K.W., Nichols, M.C, Ross, N.L Mine Park,... - Click for further information on this occurrence sodium and no sodium a major constituent of granites granite! ( 11 ): History and Minerals of Old Mine Park of liquid volumes the... Trail, R.J., Taylor, W.H of feldspar with the chemical formula NaAlSi 3 8... Modified and updated by Barbara Liebman, Boston mineral Club News, September, 2005, Cambridge Massachusetts! Bladh, K.W., Nichols, M.C with less than 10 % anorthite.!