Buddingtonite
A valid IMA mineral species - grandfathered
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About Buddingtonite
Arthur Francis Buddington
Formula:
(NH4)(AlSi3O8)
Colour:
Colorless
Lustre:
Sub-Vitreous, Earthy
Hardness:
5½
Specific Gravity:
2.32
Crystal System:
Monoclinic
Member of:
Name:
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.
Type Locality:
Isostructural with:
This page provides mineralogical data about Buddingtonite.
Unique Identifiers
Mindat ID:
796
Long-form identifier:
mindat:1:1:796:6
IMA Classification of Buddingtonite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(NH4)(AlSi3)O8
First published:
1964
Classification of Buddingtonite
9.FA.30
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.2.1
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.5.3
16 : Silicates Containing Aluminum and other Metals
5 : Aluminosilicates of Cs, NH4 and Cu
16 : Silicates Containing Aluminum and other Metals
5 : Aluminosilicates of Cs, NH4 and Cu
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Bud | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Buddingtonite
Sub-Vitreous, Earthy
Transparency:
Transparent
Comment:
Usually very fine grained.
Colour:
Colorless
Streak:
White
Hardness:
5½ on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Distinct/Good
{001}, {010}
{001}, {010}
Fracture:
Sub-Conchoidal
Density:
2.32 g/cm3 (Measured) 2.38 g/cm3 (Calculated)
Optical Data of Buddingtonite
Type:
Biaxial (+)
RI values:
nα = 1.530 nβ = 1.531 nγ = 1.534
2V:
Calculated: 60°
Birefringence:
0.004
Max. Birefringence:
δ = 0.004
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
weak
Optical Extinction:
Z = b; X ∧ a = 4°; Y ∧ c = 19°.
Pleochroism:
Non-pleochroic
Chemistry of Buddingtonite
Mindat Formula:
(NH4)(AlSi3O8)
Element Weights:
Common Impurities:
Mg,Ca,Ba,Na,K
Crystallography of Buddingtonite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Cell Parameters:
a = 8.57 Å, b = 13.03 Å, c = 7.18 Å
β = 112.73°
β = 112.73°
Ratio:
a:b:c = 0.658 : 1 : 0.551
Unit Cell V:
739.50 ų (Calculated from Unit Cell)
Morphology:
Usually fine-grained, anhedral. When developed, crystals typical of orthoclase.
Comment:
Possibly prismatic class
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0008919 | Buddingtonite | Mookherjee 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 31 643-649 | 2004 | 0 | 293 | ||
| 0008920 | Buddingtonite | Mookherjee 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 31 643-649 | 2004 | 0 | 293 | ||
| 0008921 | Buddingtonite | Mookherjee 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 31 643-649 | 2004 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 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) |
Comments:
17-517
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 53 : Other minerals with taphonomic origins | <0.4 |
Type Occurrence of Buddingtonite
General Appearance of Type Material:
Compact masses pseudomorphous after plagioclase, and as crystals as much as 0.05 mm diameter lining cavities.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 116974, 132920, 147604.
Geological Setting of Type Material:
Quaternary andesite and older rocks hydrothermally altered by ammonia-bearing hot-spring waters below the water table.
Associated Minerals at Type Locality:
Synonyms of Buddingtonite
Other Language Names for Buddingtonite
Relationship of Buddingtonite to other Species
Member of:
Other Members of Feldspar Group:
| Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. | |
| Celsian | Ba(Al2Si2O8) | Mon. 2/m |
| Filatovite | K(Al,Zn)2(As,Si)2O8 | Mon. 2/m |
| Hexacelsian | BaAl2Si2O8 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| Kokchetavite | K(AlSi3O8) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Kumdykolite | Na(AlSi3O8) | Orth. mmm (2/m 2/m 2/m) : Pnnm |
| Paracelsian | Ba(Al2Si2O8) | Mon. 2/m : P21/b |
| Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 | |
| Reedmergnerite | NaBSi3O8 | Tric. 1 : P1 |
| Slawsonite | Sr(Al2Si2O8) | Mon. 2/m : P21/b |
| Svyatoslavite | Ca(Al2Si2O8) | Mon. 2 : P21 |
| Unnamed (New Ordered Member of the Alkali Feldspar Series) | KNa(Si6Al2)O16 | Mon. m |
Related Minerals - Strunz-mindat Grouping
| 9.FA. | Hexacelsian | BaAl2Si2O8 |
| 9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
| 9.FA.05 | Panunzite | (K,Na)AlSiO4 |
| 9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
| 9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
| 9.FA.05 | Trinepheline | NaAlSiO4 |
| 9.FA.05 | Davidsmithite | (Ca,◻)2Na6Al8Si8O32 |
| 9.FA.05 | Kaliophilite | KAlSiO4 |
| 9.FA.05 | Kalsilite | KAlSiO4 |
| 9.FA.05 | Carnegieite | NaAlSiO4 |
| 9.FA.05 | Megakalsilite | KAlSiO4 |
| 9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
| 9.FA.10 | Malinkoite | NaBSiO4 |
| 9.FA.15 | Virgilite | LiAlSi2O6 |
| 9.FA.25 | Lisitsynite | KBSi2O6 |
| 9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
| 9.FA.30 | Rubicline | Rb(AlSi3O8) |
| 9.FA.30 | Monalbite | NaAlSi3O8 |
| 9.FA.30 | Microcline | K(AlSi3O8) |
| 9.FA.30 va | Germanate-celsian | BaAl2Ge2O8 |
| 9.FA.30 | Celsian | Ba(Al2Si2O8) |
| 9.FA.30 | Sanidine | K(AlSi3O8) |
| 9.FA.30 | Orthoclase | K(AlSi3O8) |
| 9.FA.35 | Reedmergnerite | NaBSi3O8 |
| 9.FA.35 | Albite | Na(AlSi3O8) |
| 9.FA.35 | Anorthite | Ca(Al2Si2O8) |
| 9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
| 9.FA.45 | Svyatoslavite | Ca(Al2Si2O8) |
| 9.FA.45 | Kumdykolite | Na(AlSi3O8) |
| 9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
| 9.FA.55 | Lisetite | CaNa2Al4Si4O16 |
| 9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
| 9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
| 9.FA.65 | Maleevite | BaB2Si2O8 |
| 9.FA.65 | Pekovite | SrB2Si2O8 |
| 9.FA.65 | Danburite | CaB2Si2O8 |
| 9.FA.70 | Liebermannite | KAlSi3O8 |
| 9.FA.70 | Lingunite | (Na,Ca)AlSi3O8 |
| 9.FA.70 | Stöfflerite | CaAl2Si2O8 |
| 9.FA.75 | Pfaffenbergite | KNa3(Al4Si12)O32 |
| 9.FA.75 | Kokchetavite | K(AlSi3O8) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Buddingtonite
mindat.org URL:
https://www.mindat.org/min-796.html
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References for Buddingtonite
Reference List:
Localities for Buddingtonite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Soechting et al. (2008) |
| RUBINSTEIN |
Australia | |
| Lindner (1983) |
China | |
| Shaohui (1987) |
| Liu (2016, April) |
Czech Republic | |
| Matýsek et al. (2022) |
Guatemala | |
| Harlap et al. (2006) |
Japan | |
| Kimbara et al. (1982) |
| Nakagawa et al. (1995) |
Mexico | |
| PhotoSat (2018) |
| Megaw (2023) |
| Stone +3 other references | |
New Zealand | |
| Railton et al. (1990) +1 other reference |
Poland | |
| Ł. Kruszewski EPMA/PXRD data +1 other reference |
Ukraine | |
| Lyckberg et al. (2009) |
| Popov (2023) | |
USA (TL) | |
| Erd et al. (1964) +2 other references |
| Journal of Volcanology & Geothermal ... |
| Pampeyan (2010) |
| Pampeyan (2010) |
| Pampeyan (2010) | |
| Pampeyan (2010) | |
| Pampeyan (2010) | |
| Pampeyan (2010) | |
| Pecora (1965) +2 other references |
| Gulbrandsen (1974) |
| Gnanou (2018) |
| Gammons et al. (2020) | |
| Jour.Volcanology & Geothermal Res. ... |
| Castor et al. (2004) |
| Felzer et al. (1994) +1 other reference | |
| Jackson et al. (2007) |
| Castor et al. (2004) |
| Mineralogical Society of America - ... |
| 2009 Portland GSA Annual Meeting (18-21 October 2009) +1 other reference |
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Sharon Heights, Menlo Park, San Mateo County, California, USA