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Stenonite

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Big Photo

Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland
© OT. Ljostad




Formula:
(Sr,Ba,Na)
 
2
Al(CO
 
3
)F
 
5
System:MonoclinicColour:Clourless, white
Hardness:3½
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 Firth, Arsuk, Kitaa (West Greenland) Province, 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):3½
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
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
 · 17H
 
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

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Stenonite details from Handbook of Mineralogy (PDF)
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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.
    Hide Locality List
    (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
     
    • Kitaa (West Greenland) Province
      • Arsuk
        • Arsuk Firth
          • 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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