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About BuddingtoniteHide

Arthur Francis Buddington
Sub-Vitreous, Earthy
Specific Gravity:
Crystal System:
Member of:
Named in 1964 by Richard C. Erd, D. E. White, Joseph J. Fahey, and D. E. Lee in honor of Arthur Francis Buddington [November 29, 1890 Wilmington, Delaware - December 25, 1980 Quincy, Massachusetts]. Buddington was a mineralogist and petrologist, first at the Carnegie Geophysical Laboratory in Washington, DC and later professor at Princeton University, New Jersey.
Isostructural with:
This page provides mineralogical data about Buddingtonite.

Classification of BuddingtoniteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions

76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks

16 : Silicates Containing Aluminum and other Metals
5 : Aluminosilicates of Cs, NH4 and Cu

Physical Properties of BuddingtoniteHide

Sub-Vitreous, Earthy
Usually very fine grained.
5½ on Mohs scale
Hardness Data:
{001}, {010}
2.32 g/cm3 (Measured)    2.38 g/cm3 (Calculated)

Optical Data of BuddingtoniteHide

Biaxial (+)
RI values:
nα = 1.530 nβ = 1.531 nγ = 1.534
Calculated: 60°
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Optical Extinction:
X' to a = 0 degrees

Chemical Properties of BuddingtoniteHide

IMA Formula:
Common Impurities:

Crystallography of BuddingtoniteHide

Crystal System:
Class (H-M):
2 - Sphenoidal
Space Group:
Cell Parameters:
a = 8.57 Å, b = 13.03 Å, c = 7.18 Å
β = 112.73°
a:b:c = 0.658 : 1 : 0.551
Unit Cell V:
739.50 ų (Calculated from Unit Cell)
Usually fine-grained, anhedral. When developed, crystals typical of orthoclase.
Possibly prismatic class

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0008919BuddingtoniteMookherjee M, Redfern S A T, Swainson I, Harlov D E (2004) Low-temperature behaviour of ammonium ion in buddingtonite [N(D/H)4AlSi3O8] from neutron powder diffraction Physics and Chemistry of Minerals 31 643-64920040293
0008920BuddingtoniteMookherjee M, Redfern S A T, Swainson I, Harlov D E (2004) Low-temperature behaviour of ammonium ion in buddingtonite [N(D/H)4AlSi3O8] from neutron powder diffraction Physics and Chemistry of Minerals 31 643-64920040293
0008921BuddingtoniteMookherjee M, Redfern S A T, Swainson I, Harlov D E (2004) Low-temperature behaviour of ammonium ion in buddingtonite [N(D/H)4AlSi3O8] from neutron powder diffraction Physics and Chemistry of Minerals 31 643-64920040293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.52 Å(100)
5.91 Å(40)
4.33 Å(70)
3.81 Å(100)
3.38 Å(70)
3.26 Å(60)
3.23 Å(70)
3.01 Å(40)

Type Occurrence of BuddingtoniteHide

Synonyms of BuddingtoniteHide

Other Language Names for BuddingtoniteHide

Relationship of Buddingtonite to other SpeciesHide

Member of:
Other Members of this group:
Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
AnorthiteCa(Al2Si2O8)Tric. 1 : P1
BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
DmisteinbergiteCa(Al2Si2O8)Trig. 3 2 : P3 1 2
FerrisanidineK[Fe3+Si3O8]Mon. 2/m : B2/m
FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m
HexacelsianBaAl2Si2O8Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
SunstoneA variety of feldspar (microcline or oligoclase, more rarely labradorite) that has schiller, ...
Unnamed (New Ordered Member of the Alkali Feldspar Series)KNa(Si6Al2)O16Mon. m

Related Minerals - Nickel-Strunz GroupingHide

9.FA.05KaliophiliteKAlSiO4Trig. 3 : P3
9.FA.05KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
9.FA.05NephelineNa3K(Al4Si4O16)Hex. 6 : P63
9.FA.05Panunzite(K,Na)AlSiO4Hex. 6 : P63
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.10MalinkoiteNaBSiO4Hex. 6 : P63
9.FA.15VirgiliteLiAlSi2O6Hex. 6 2 2 : P62 2 2
9.FA.25LisitsyniteKBSi2O6Orth. 2 2 2 : P2 2 2
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
9.FA.30MicroclineK(AlSi3O8)Tric. 1
9.FA.30OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30SanidineK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30MonalbiteNaAlSi3O8Mon. 2/m : B2/m
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.45KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
9.FA.50SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
9.FA.55LisetiteCaNa2Al4Si4O16Orth. mm2
9.FA.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
9.FA.65DanburiteCaB2Si2O8Orth. mmm (2/m 2/m 2/m)
9.FA.65MaleeviteBaB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.65PekoviteSrB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.70Lingunite(Na,Ca)AlSi3O8Tet. 4/m : I4/m
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.5.1Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m (4/m 3 2/m) : Ia3d
16.5.6Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2OTric.

Other InformationHide

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

References for BuddingtoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Erd, R.C., White, D.E., Fahey, J.J., Lee, D.E. (1964) Buddingtonite, an ammonium feldspar with zeolitic water. American Mineralogist: 49: 831-851.
Loughnan, F.C., Roberts, F.I., Lindner, A.W. (1983) Buddingtonite (NH4-feldspar) in the Condor Oilshale Deposit, Queensland, Australia. Mineralogical Magazine: 47: 327-334.
Voncken, J.H.L., Van Roermund, H.L.M., Van Der Eerden, A.M.J., Jansen, J.B.H., Erd, R.C. (1993) Holotype buddingtonite: An ammonium feldspar without zeolitic H2O. American Mineralogist: 78: 204-209.
Harlov, D.E., Andrut, M., Pöter, B. (2001) Characterisation of buddingtonite (NH4)[AlSi3O8] and ND4-buddingtonite (ND4)[AlSi3O8] using IR spectroscopy and Rieveld refinement of XRD spectra. Physics and Chemistry of Minerals: 28: 188-198.

Internet Links for BuddingtoniteHide

Localities for BuddingtoniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Chubut Province
    • Futaleufú Department
      • Esquel
Soechting, W., Rubinstein, N., & Godeas, M. (2008). Identification of ammonium-bearing minerals by shortwave infrared reflectance spectroscopy at the Esquel gold deposit, Argentina. Economic Geology, 103(4), 865-869.
  • Mendoza Province
    • Malargüe Department
RUBINSTEIN, N. y GARGIULO, M.F.. Análisis textural de cuarzo hidrotermal del depósito El Pantanito, provincia de Mendoza: Nuevos aportes sobre su génesis. Rev. Asoc. Geol. Argent. [online]. 2005, vol.60, n.1, pp. 096-103.
  • Queensland
    • Cairns Region
      • Prosperpine
Lindner, A. (1983) Buddingtonite (NH4-feldspar) in the Condor oilshale deposit, Queensland, Australia. Mineralogical Magazine, 47, 327-34.
  • Guangdong
    • Maoming
Shaohui, Q. K. G. (1987). Investigation on the Constitution and Structure of Maoming and Fushun Oil Shale Ⅳ. Content and Constitution of Mineral Matter [J]. Journal of Fuel Chemistry and Technology, 1, 000.
  • Chiquimula Department
Harlap, A. and Williams-Jones, A.E., (2006) Buddingtonite: A Gold Vector In Disguise. in Geological Association of Canada, Program with Abstracts Volume 31
  • Iwate Prefecture
    • Hachimantai geothermal area
Kimbara, K., & Nishimura, T. (1982). Buddingtonite from the Toshichi Spa, Iwate Prefecture, Japan. J. Min. Soc. Jpn, 15, 207-216.
  • Saga Prefecture
    • Nishimatsuura District
      • Arita
Nakagawa et al. (1995) Nendo Kagaku, 35, 1-14.
  • Puebla
    • Ixtacamaxtitlán Municipality
PhotoSat (2018) WorldView-3 Alteration Mineral Mapping of the Ixtaca Gold-Silver Deposit (PDF)
  • Zacatecas
Peter Megaw field work
Stone, J.B. and McCarthy, J.C., 1948, Mineral and metal variation in the veins of Fresnillo, Zacatecas, Mexico.: A.I.M.E., Transactions, v. 178, p. 91-106 Gemmell, J.B., Zantop, H. and Birnie, R.W., 1989, Silver sulfosalts of the Santo Nino vein, Fresnillo District, Zacatecas, Mexico: Canadian Mineralogist, v. 27, no. 3, p. 401-418 MacDonald, A.J., Kreczmer, M.J. and Kesler, S.E., 1986, Vein, manto, and chimney mineralization at the Fresnillo silver-lead-zinc mine, Mexico.: Canadian Journal of Earth Sciences, v. 23, no. 10, p. 1603- 1614
New Zealand
  • Northland Region
    • Whangarei District
Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.; Christie, A.B., Barker, R.G. 2007. Mineral resource assessment of the Northland Region, New Zealand, GNS Science Report, 2007/06, 179
  • Silesian Voivodeship
    • Bytom City County
Kruszewski, Ł. (2018)(?): Geochemical Behavior of Trace Elements in Upper and Lower Silesian Basin Coal-Fire Gob Piles, Poland. Coal and Peat Fires, vol. 5, xx-xx (in review/correction); Ł. Kruszewski EPMA/PXRD data
  • Zhytomyr Oblast
Lyckberg, P., Chornousenko, V. & Wilson, W. E. (2009): Volodarsk-Volynski, Zhitomir Oblast, Ukraine. Mineralogical Record, 40, 473-506.
  • California
    • Lake Co.
      • Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District)
        • Clear Lake Oaks
Erd, R.C., D.E. White, J.J. Fahey & D.E. Lee (1964), Buddingtonite, an ammonium feldspar with zeolitic water: American Mineralogist: 49: 831, 833; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 279, 360.
    • Napa Co.
      • Knoxville Mining District
        • Knoxville
Journal of Volcanology & Geothermal Resources 56: 401-414.
    • San Mateo Co.
      • Atherton
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
      • Menlo Park
        • Sharon Heights
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
Pampeyan, E.H. (2010): USGS Open-File Report 10-1053
      • Palo Alto area
Pecora, W.T. and Staff (1965) Mineral Resources. Geological Survey Research, 1965. USGS Professional Paper 525-A, 376 pp.: 6; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 365.
  • Idaho
    • Caribou Co.
      • SE Idaho Phosphate Mining District
Gulbrandsen, R. A. (1974). Buddingtonite, ammonium feldspar, in the Phosphoria Formation, southeastern Idaho. US Geological Survey Journal of Research, 2, 693-697.
  • Nevada
    • Elko Co.
Jour.Volcanology & Geothermal Res. 56:401-414
    • Esmeralda Co.
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada; Felzer, Benjamin, Hauff, Phoebe, and Goetz, A.F.H., (1994) Quantitative reflectance spectroscopy of buddingtonite from the Cuprite mining district, Nevada: Journal of Geophysical Research, v. 99, no. B2, p. 2887-2895.
    • Humboldt Co.
      • Awakening Mining District
Jackson, R. G., & Chevillon, C. V. (2007) 3D Geochemical and Mineralogical Model of the Sleeper Low Sulphidation Gold System, Nevada. Poster presentation - Exploration 07. Toronto
      • Opalite Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Nye Co.
      • San Antonio Mountains
        • Tonopah Mining District
Handbook of Mineralogy
  • Wyoming
    • Park Co.
      • Grand Canyon of the Yellowstone
2009 Portland GSA Annual Meeting (18-21 October 2009) Paper No. 26-23; Phillips, A. R., Larson, P. B., John, D. A., & Pauley, B. M. (2008, December). Hydrothermal Quartz Oxygen Isotope Ratios in Altered Post-Collapse Rhyolite at Sevenmile Hole, Grand Canyon of the Yellowstone River, Yellowstone National Park, WY. In AGU Fall Meeting Abstracts.
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