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Buddingtonite

Big Photo

Sharon Heights, Menlo Park, San Mateo Co., California, USA
© Caltech

Formula:
(NH
 
4
)[AlSi
 
3
O
 
8
]
System:MonoclinicColour:Colourless
Lustre:VitreousHardness:5½
This page provides mineralogical data about Buddingtonite.

Classification of Buddingtonite

IMA status:Approved
Strunz 8th edition ID:8/J.06-10
Nickel-Strunz 10th (pending) edition ID:9.FA.30

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
Dana 8th edition ID:76.1.2.1

76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
Hey's CIM Ref.:16.5.3

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

Type Locality:Sulphur Bank Mine (Sulfur Bank mine), Clear Lake, Clear Lake Oaks, Lake Co., California, USA
Year of Discovery:1964

Physical Properties of Buddingtonite

Lustre:Vitreous
Colour:Colourless
Hardness (Mohs):5½

Crystallography of Buddingtonite

Crystal System:Monoclinic
Cell Parameters:a = 8.57Å, b = 13.03Å, c = 7.18Å
β = 112.73°
Ratio:a:b:c = 0.658 : 1 : 0.551
Unit Cell Volume:V 739.50 ų (Calculated from Unit Cell)

Optical Data of Buddingtonite

Type:Biaxial (+)
RI values: nα = 1.530 nβ = 1.531 nγ = 1.534
Maximum Birefringence:δ = 0.004

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:weak

Chemical Properties of Buddingtonite

Formula:
(NH
 
4
)[AlSi
 
3
O
 
8
]
Essential elements:Al, H, N, O, Si
All elements listed in formula:Al, H, N, O, Si
Common Impurities:Mg,Ca,Ba,Na,K

Relationship of Buddingtonite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.FA.IMA2007-049
NaAlSi
 
3
O
 
8
9.FA.05Kaliophilite
K[AlSiO
 
4
]
9.FA.05Kalsilite
K[AlSiO
 
4
]
9.FA.05Nepheline
(Na,K)[AlSiO
 
4
]
9.FA.05Panunzite
(Na,K)[AlSiO
 
4
]
9.FA.05Trikalsilite
(Na,K)[AlSiO
 
4
]
9.FA.05Yoshiokaite
(Ca,Na)[Al(Al,Si)O
 
4
]
9.FA.05Megakalsilite
KAlSiO
 
4
9.FA.10Malinkoite
NaBSiO
 
4
9.FA.15Virgilite
LiAlSi
 
2
O
 
6
9.FA.25Lisitsynite
KBSi
 
2
O
 
6
9.FA.30Adularia
KAlSi
 
3
O
 
8
9.FA.30Anorthoclase
(Na,K)[AlSi
 
3
O
 
8
]
9.FA.30Celsian
Ba[Al
 
2
Si
 
2
O
 
8
]
9.FA.30Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.30Microcline
K[AlSi
 
3
O
 
8
]
9.FA.30Orthoclase
K[AlSi
 
3
O
 
8
]
9.FA.30Sanidine
K[AlSi
 
3
O
 
8
]
9.FA.30Rubicline
(Rb,K)[AlSi
 
3
O
 
8
]
9.FA.30Kokchetavite
KAlSi
 
3
O
 
8
9.FA.30Monalbite
Na[AlSi
 
3
O
 
8
]
9.FA.35Albite
Na[AlSi
 
3
O
 
8
]
9.FA.35Andesine
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Anorthite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.FA.35Bytownite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Labradorite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Oligoclase
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Reedmergnerite
Na[BSi
 
3
O
 
8
]
9.FA.35Lingunite
(Na,Ca)AlSi
 
3
O
 
8
9.FA.40Paracelsian
Ba[Al
 
2
Si
 
2
O
 
8
]
9.FA.45Svyatoslavite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.FA.50Slawsonite
(Sr,Ca)[Al
 
2
Si
 
2
O
 
8
]
9.FA.55Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
9.FA.60Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.60Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.65Danburite
Ca[BSiO
 
4
]
 
2
9.FA.65Maleevite
BaB
 
2
Si
 
2
O
 
8
9.FA.65Pekovite
SrB
 
2
Si
 
2
O
 
8
Related Minerals - Hey's Index Grouping:
16.5.1Pollucite
(Cs,Na)
 
2
[Al
 
2
Si
 
4
O
 
12
] · 2H
 
2
O
16.5.2Nanpingite
CsAl
 
2
[(OH,F)
 
2
|AlSi
 
3
O
 
10
]
16.5.4Ammonioleucite
(NH
 
4
,K)AlSi
 
2
O
 
6
16.5.5Tobelite
(NH
 
4
,K)Al
 
2
[(OH)
 
2
|AlSi
 
3
O
 
10
]
16.5.6Ajoite
(K,Na)Cu
 
7
[(OH)
 
6
|AlSi
 
9
O
 
24
] · 3H
 
2
O
16.5.7Papagoite
CaCu[H
 
3
AlSi
 
2
O
 
9
]

Other Names for Buddingtonite

Synonyms:
IMA1963-001
German names:
Buddingtonit
Russian names:
Баддингтонит
Spanish names:
Buddingtonita

Other Information

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

References for Buddingtonite

Reference List:American Mineralogist: 49: 831-850.

American Mineralogist: 78: 204-209.

Internet Links for Buddingtonite

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    Localities for Buddingtonite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Kyushu Island
      • Saga Prefecture
        • Arita
    		Nakagawa et al. (1995) Nendo Kagaku, 35, 1-14.
    New Zealand
     
    • North Island
      • Northland
    		Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    Ukraine
     
    • Zhytomyr Oblast' (Zhitomir Oblast')
    		No reference listed
    USA
     
    • California
      • Lake Co.
        • Clear Lake Oaks
          • Clear Lake
    		Amer. Mineral., 1964, 49, 831.
      • Napa Co.
    		Jour. of Volcanology & Geothermal Res. 56:401-414
      • San Mateo Co.
        • Menlo Park
    • 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
      • Humboldt Co.
        • Opalite District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Mineral and/or Locality
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