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Stenonite

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Formula:
(Sr,Ba,Na)
 
2
Al(CO
 
3
)F
 
5
System:MonoclinicColour:Clourless, white
Hardness:
Name:
Named after Nicolaus Steno (Niels Steensen) (1638-1686), Danish physician, discoverer of the law of constancy of interfacial angles.
This page provides mineralogical data about Stenonite.

Classification of Stenonite

IMA status:Approved
Strunz 8th edition ID:3/C.05-10
Nickel-Strunz 10th (pending) edition ID:3.CG.05

3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
Dana 8th edition ID:12.1.1.1

12 : COMPOUND HALIDES
1 : Miscellaneous
Hey's CIM Ref.:12.1.7

12 : Carbonates with other anions
1 : Carbonates with halides
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Type Occurrence of Stenonite

Type Locality:Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland
Year of Discovery:1962
Geological Setting of type material:Contact between cryolite-siderite and fluorite rich rocks.
Associated Minerals at type locality:
WeberiteWeberiteJarlite

Physical Properties of Stenonite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Clourless, white
Hardness (Mohs):
Cleavage:Distinct/Good
Good on {001} {120}
Density (measured):3.86(7) g/cm3
Density (calculated):3.847 g/cm3

Crystallography of Stenonite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 5.450Å, b = 8.704Å, c = 13.050Å
β = 98.72°
Ratio:a:b:c = 0.626 : 1 : 1.499
Unit Cell Volume:V 611.89 ų (Calculated from Unit Cell)
Z:4
Morphology:Massive

Optical Data of Stenonite

Type:Biaxial (-)
RI values: nα = 1.452 nβ = 1.527 nγ = 1.538
2V:Measured: 43° , Calculated: 40°
Maximum Birefringence:δ = 0.086

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

Chemical Properties of Stenonite

Formula:
(Sr,Ba,Na)
 
2
Al(CO
 
3
)F
 
5
Simplified for copy/paste:(Sr,Ba,Na)2Al(CO3)F5
Essential elements:Al, C, F, O, Sr
All elements listed in formula:Al, Ba, C, F, Na, O, Sr

Relationship of Stenonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.CG.10Chukhrovite-(Ce)
Ca
 
3
(Ce,Y)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
3.CG.10Chukhrovite-(Y)
Ca
 
3
(Y,Ce)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
3.CG.10Meniaylovite
Ca
 
4
[F|SO
 
4
|SiF
 
6
|AlF
 
6
] · 12H
 
2
O
3.CG.10Chukhrovite-(Nd)
Ca
 
3
(Nd,Y)Al
 
2
(SO
 
4
)F
 
13
·12H
 
2
O
3.CG.15Creedite
Ca
 
3
SO
 
4
Al
 
2
F
 
8
(OH)
 
2
· 2H
 
2
O
3.CG.20Bøggildite
Na
 
2
Sr
 
2
Al
 
2
PO
 
4
F
 
9
3.CG.25Thermessaite
K
 
2
(AlF
 
3
)(SO
 
4
)
Related Minerals - Hey's Index Grouping:

- +
12.1.1Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
12.1.2Barentsite
Na
 
7
Al(HCO
 
3
)
 
2
(CO
 
3
)
 
2
F
 
4
12.1.3Rouvilleite
Na
 
3
(Ca,Mn,Fe)
 
2
(CO
 
3
)
 
3
F
12.1.4Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
· 3H
 
2
O
12.1.5Defernite
Ca
 
6
(CO
 
3
)
 
2-x
(SiO
 
4
)
 
x
(OH)
 
7
(Cl,OH)
 
1-2x
(x<0.5)
12.1.6Brenkite
Ca
 
2
(CO
 
3
)F
 
2
12.1.8Bastnäsite-(Ce)
(Ce,La)(CO
 
3
)F
12.1.9Bastnäsite-(La)
(La,Ce)(CO
 
3
)F
12.1.10Bastnäsite-(Y)
(Y,Ce)(CO
 
3
)F
12.1.11Parisite-(Ce)
Ca(Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.12Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.13Synchysite-(Ce)
Ca(Ce,La)(CO
 
3
)
 
2
F
12.1.14Synchysite-(Y)
Ca(Y,Ce)(CO
 
3
)
 
2
F
12.1.15Synchysite-(Nd)
Ca(Nd,Y,Gd)(CO
 
3
)
 
2
F
12.1.16Röntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
(CO
 
3
)
 
5
F
 
3
12.1.17Cordylite-(Ce)
NaBaCe
 
2
(CO
 
3
)
 
4
F
12.1.19Huanghoite-(Ce)
BaCe(CO
 
3
)
 
2
F
12.1.20Zhonghuacerite-(Ce)
Ba
 
2
Ce(CO
 
3
)
 
3
F
12.1.21Cebaite-(Ce)
Ba
 
3
Ce
 
2
(CO
 
3
)
 
5
F
 
2
12.1.22Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
· 3H
 
2
O
12.1.23Phosgenite
Pb
 
2
CO
 
3
Cl
 
2
12.1.24Barstowite
Pb
 
4
Cl
 
6
(CO
 
3
) · H
 
2
O
12.1.25Albrechtschraufite
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
· 17-18H
 
2
O
12.1.26Kettnerite
CaBiCO
 
3
OF

Other Names for Stenonite

Other Languages:
German:Stenonit
Russian:Стенонит
Spanish:Stenonita

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 Stenonite

Reference List:

- +
Meddelelser om Grønland (1962) 169(9): 1-24.

American Mineralogist (1963): 48: 1178.

Canadian Mineralogist (1984): 22: 245-251.

Internet Links for Stenonite

Search Engines:
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  • External Links:
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  • Look for Stenonite on Athena Mineralogy
  • Look for Stenonite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Stenonite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Stenonite

    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.
    (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.
    Greenland
     
    • Sermersooq
      • Arsuk Fjord
        • Ivittuut (Ivigtut)
    H. Pauly: Medd. Grønland 169(9):1-24 (1962); Amer. Mineral. 48:1178 (1963); Petersen, O. V and K Secher (1993) The Minerals of Greenland. Mineralogical Record 24:36
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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