(Na,Ca)(Si,Al)4O8 Help on Composition: Composition: Molecular Weight = 265.42 gm Sodium 6.93 % Na 9.34 % Na2O Calcium 3.02 % Ca 4.23 % CaO Aluminum 12.20 % Al 23.05 % Al2O3 Silicon 29.63 % Si 63.38 % SiO2 Oxygen 48.22 % O ______ ______ 100.00 % 100.00 % = TOTAL OXIDE Help on Empirical Formula: Empirical Formula: Na0.8Ca0.2Al1.2Si2.8O8 Help on Environment: Environment: Magmatic and pegmatitic rocks. Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1826 Help on Locality: Locality: Twedestrand, Norway. Link to MinDat.org Location Data. Help on Name Origin: Name Origin: From the Greek, oligos and kasein, little cleavage. Help on Name Pronunciation: Name Pronunciation: Oligoclase + Pronunciation Say OLIGOCLASE Help on Synonym: Synonym: Ab80 An20 Sunstone Oligoclase Image Click Here for Larger Oligoclase Image in a New Browser Window Images: Click Here for Larger Oligoclase Image Oligoclase Plagioclase Comments: Rectangular cleavage fragment of salmon-orange oligoclase (sunstone) feldspar. Location: Norway. Scale: 47x30x7 mm. © John Betts - Fine Minerals Click Here for Larger Oligoclase Image in a New Browser Window Images: Click Here for Larger Oligoclase Image Oligoclase Plagioclase Comments: Clear glassy crystalline oligoclase with milky quartz and muscovite. Location: Bakersville, Mitchell County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species Oligoclase Crystallography Help on Axial Ratios: Axial Ratios: a:b:c =0.6377:1:0.6651 Help on Cell Dimensions: Cell Dimensions: a = 8.15, b = 12.78, c = 8.5, Z = 5; alpha = 94.016°, beta = 116.3333°, gamma = 88.667° V = 791.30 Den(Calc)= 2.78 Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: C1 Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.2(1), 3.74(0.8), 4.02(0.8), Help on Forms: Forms: Mouse Dbl Clk - Start-Stop Rotation RMB - Cycle Display Modes Drag1 - Manipulate Crystal Drag2 - Resize Keyboard S - Stereo I - Indicies - Start-Stop Rotation F - Fit to Screen M - Menu Help on Above Forms: ( 0 0 1) ( 1 0 0) ( 1 0 1) ( 0 1 0) Warning: this large pop-up is very compute intensive and may not work well with some computers. Click Here for Large Oligoclase Structure Window Crystal Structure: Mouse drag1 - LMB Manipulate Structure drag2 - RMB Resize/Rotate Keyboard S - Stereo Pair on/off H - Help Screen I - Data Info A - Atoms On/Off P - Polyhedra On/Off B - Bonds On/Off Help on Above Phillips M W , Colville A A , Ribbe P H , Zeitschrift fur Kristallographie , 133 (1971) p.43-65, The crystal structures of two oligoclases: a comparison with low and high albite, Locality: Camedo, Switzerland, Sample: An28 Physical Properties of Oligoclase Help on Cleavage: Cleavage: {001} Perfect, {010} Good Help on Color: Color: Brown, Colorless, Greenish, Gray, Yellowish. Help on Density: Density: 2.64 - 2.66, Average = 2.65 Help on Diaphaneity: Diaphaneity: Transparent to Translucent Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form. Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix. Help on Hardness: Hardness: 7 - Quartz Help on Luminescence: Luminescence: Fluorescent, Long UV=yellow. Help on Luster: Luster: Vitreous (Glassy) Help on Streak: Streak: white Optical Properties of Oligoclase Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.054 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1951,KPDmeas= 0.2047,KC= 0.2062 Ncalc = 1.54 - 1.57 Help on Optical Data: Optical Data: Biaxial (+), a=1.533-1.543, b=1.5368-1.5477, g=1.542-1.552, bire=0.0090, 2V(Calc)=82-86, 2V(Meas)=82. Dispersion none. Help on Pleochroism (x): Pleochroism (x): colorless. Help on Pleochroism (y): Pleochroism (y): colorless. Calculated Properties of Oligoclase Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.63 gm/cc note: Specific Gravity of Oligoclase =2.65 gm/cc. Help on Fermion Index: Fermion Index: Fermion Index = 0.01 Boson Index = 0.99 Help on Photoelectric: Photoelectric: PEOligoclase = 1.98 barns/electron U=PEOligoclase x rElectron Density= 5.19 barns/cc. Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units) Oligoclase is Not Radioactive Oligoclase Classification Help on Dana Class: Dana Class: 76.01.03.02 (76)Tectosilicate Al-Si Framework (76.01)with Al-Si frameworks (76.01.03)Plagioclase series 76.01.03.00 Plagioclase* (Na,Ca)(Si,Al)4O8 C1 1 76.01.03.01 Albite NaAlSi3O8 C1 1 76.01.03.02 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1 76.01.03.03 Andesine* (Na,Ca)(Si,Al)4O8 C1 1 76.01.03.04 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1 76.01.03.05 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1 76.01.03.06 Anorthite CaAl2Si2O8 P1,I1 1 Help on Strunz Class: Strunz Class: 09.FA.35 09 - SILICATES (Germanates) 09.F - Tektosilicates without Zeolitic H2O 09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1 09.FA.35 Albite NaAlSi3O8 C1 1 09.FA.35 Bytownite* (Ca,Na)(Si,Al)4O8 C1 1 09.FA.35 Anorthite CaAl2Si2O8 P1,I1 1 09.FA.35 Andesine* (Na,Ca)(Si,Al)4O8 C1 1 09.FA.35 Labradorite* (Ca,Na)(Si,Al)4O8 C1 1 09.FA.35 Oligoclase (Na,Ca)(Si,Al)4O8 C1 1 09.FA.35 Reedmergnerite NaBSi3O8 C1 1 09.FA.35 Plagioclase* (Na,Ca)(Si,Al)4O8 C1 1 Other Oligoclase Information Help on See Also: See Also: Links to other databases for Oligoclase : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Amethyst Galleries Mineral Gallery 5 - Athena 6 - EUROmin Project 7 - Ecole des Mines de Paris 8 - Franklin Minerals(Dunn) 9 - GeoScienceWorld 10 - Glendale Community College 11 - Google Images 12 - Google Scholar 13 - Handbook of Mineralogy (MinSocAm) 14 - Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 - MinDAT 17 - Mineral and Gemstone Kingdom 18 - Mineralienatlas (Deutsch) 19 - Online Mineral Museum 20 - Philatelic Mineralogy 21 - QUT Mineral Atlas 22 - Ruff.Info 23 - Scandinavian mineral gallery Search for Oligoclase using: Google Web webmineral [AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO] Visit our Advertisers for Oligoclase : B and L Fine Minerals Google Search for Oligoclase Dakota Matrix Minerals Google Search for Oligoclase Dan & Diana Weinrich Mineral Auctions Google Search for Oligoclase Excalibur Mineral Corp. Google Search for Oligoclase FEI QEMSCAN SEM Website Link FEI Natural Resources Website Link John Betts Fine Minerals Google Search for Oligoclase McDougall Minerals Google Search for Oligoclase Mineral News Website Link Mineral of the Month Club Google Search for Oligoclase Rockeeper Website Link Weinrich Minerals, Inc. Google Search for Oligoclase Wrights Rock Shop Google Search for Oligoclase Ask about Oligoclase here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat.orgs Discussion Groups Original Rockhounds Discussion Group Rockhounds Discussion Group on Yahoo Groups Mineral Discussion Forum from Fabre Minerals - also available in Español Print or Cut-and-Paste your Oligoclase Specimen Label here : Oligoclase (Na,Ca)(Si,Al)4O8 Dana No: 76.01.03.02 Strunz No: 09.FA.35 Locality: Notes:
Posted on: Wed, 09 Jul 2014 02:06:47 +0000
Trending Topics
Recently Viewed Topics
© 2015