General Buddingtonite Information![]() (NH4)AlSi3O8•0.5(H2O) |
![]() Molecular Weight = 266.28 gm |
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Aluminum 10.13 % Al 19.15 % Al2O3 |
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Silicon 31.64 % Si 67.69 % SiO2 |
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Hydrogen 1.51 % H - % Calc as (NH4)2O |
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Hydrogen 0.38 % H 3.38 % H2O |
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Nitrogen 5.26 % N 9.78 % (NH4)2O |
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Oxygen 51.07 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() (NH4)Al(Si3O8)•0.5(H2O) |
![]() Plagioclase altered by ammonium-bearing waters. |
![]() Approved IMA 1964 |
![]() Sulfur Bank mine, end of east arm of clear Lake, Lake Co. California. Link to MinDat.org Location Data. |
![]() Named for Arthur Francis Buddington (1890-1980), American petrologist, Princeton University. |
![]() Buddingtonite + Pronunciation |
![]() | | Buddingtonite Image
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Buddingtonite Crystallography![]() a:b:c =0.6576:1:0.5514 |
![]() a = 8.571, b = 13.032, c = 7.187, Z = 4; beta = 112.7° V = 740.58 Den(Calc)= 2.39 |
![]() MonoclinicSpace Group: P 21 or P 21/m |
![]() By Intensity(I/Io): 3.81(1), 6.52(0.96), 3.381(0.72), |
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| Physical Properties of Buddingtonite![]() {001} Good, {010} Distinct |
![]() Colorless, White. |
![]() 2.32 |
![]() Transparent to Translucent |
![]() Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
![]() Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye. |
![]() Pseudomorphous - Occurs in the form of another mineral. |
![]() 5.5 - Knife Blade |
![]() Vitreous - Dull |
![]() white |
| Optical Properties of Buddingtonite![]() CI meas= -0.194 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.159 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2225,KPDmeas= 0.2292,KC= 0.1919 Ncalc = 1.45 - 1.46 ![]() Biaxial (+), a=1.53, b=1.531, g=1.534, bire=0.0040 |
| Calculated Properties of Buddingtonite![]() Bulk Density (Electron Density)=2.42 gm/cc |
note: Specific Gravity of Buddingtonite =2.39 gm/cc. ![]() Fermion Index = 0.06 |
Boson Index = 0.94 ![]() PEBuddingtonite = 1.52 barns/electron |
U=PEBuddingtonite x rElectron Density= 3.70 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Buddingtonite is Not Radioactive | Buddingtonite Classification![]() 76.01.02.01 (76)Tectosilicate Al-Si Framework |
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(76.01)with Al-Si frameworks |
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(76.01.02)Dana Group |
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![]() 09.FA.30 09 - SILICATES (Germanates) |
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09.F - Tektosilicates without Zeolitic H2O |
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09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1 |
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| Other Buddingtonite Information![]() NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
![]() Links to other databases for Buddingtonite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Buddingtonite using: Visit our Advertisers for Buddingtonite : A Bijoux Google Search for BuddingtoniteAdam's Minerals Google Search for Buddingtonite Cape Minerals Google Search for Buddingtonite Dakota Matrix Minerals Google Search for Buddingtonite Excalibur Mineral Corp. Google Search for Buddingtonite Exceptional Minerals Google Search for Buddingtonite John Betts Fine Minerals Search for Buddingtonite McDougall Minerals Google Search for Buddingtonite Mineral News Website Link Rock and Mineral Shows Google Search for Buddingtonite Weinrich Minerals, Inc. Google Search for Buddingtonite Ask about Buddingtonite here : Print or Cut-and-Paste your Buddingtonite Specimen Label here :
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