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Stenonite

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Nicolas Steno
Formula:
(Sr,Ba,Na)2Al(CO3)F5
System:
Monoclinic
Colour:
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

Approved
3.CG.05

3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
12.1.1.1

12 : COMPOUND HALIDES
1 : Miscellaneous
12.1.7

12 : Carbonates with other anions
1 : Carbonates with halides
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First Recorded Occurrence of Stenonite

Year of Discovery:
1962
Geological Setting of First Recorded Material:
Contact between cryolite-siderite and fluorite rich rocks.
Associated Minerals at First Recorded Locality:

Physical Properties of Stenonite

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

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°
Max Birefringence:
δ = 0.086
Image 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)2Al(CO3)F5
Essential elements:
All elements listed in formula:

Relationship of Stenonite to other Species

3.CG.10Chukhrovite-(Ce)Ca3(Ce,Y)[F|SO4|(AlF6)2] · 10H2O
3.CG.10Chukhrovite-(Y)Ca3(Y,Ce)[F|SO4|(AlF6)2] · 10H2O
3.CG.10MeniayloviteCa4[F|SO4|SiF6|AlF6] · 12H2O
3.CG.10Chukhrovite-(Nd)Ca3(Nd,Y)Al2(SO4)F13·12H2O
3.CG.15CreediteCa3SO4Al2F8(OH)2 · 2H2O
3.CG.20BøggilditeNa2Sr2Al2PO4F9
3.CG.25ThermessaiteK2(AlF3)(SO4)
12.1.1NorthupiteNa3Mg(CO3)2Cl
12.1.2BarentsiteNa7Al(HCO3)2(CO3)2F4
12.1.3RouvilleiteNa3(Ca,Mn,Fe)2(CO3)3F
12.1.4ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
12.1.5DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)
12.1.6BrenkiteCa2(CO3)F2
12.1.8Bastnäsite-(Ce)(Ce,La)(CO3)F
12.1.9Bastnäsite-(La)(La,Ce)(CO3)F
12.1.10Bastnäsite-(Y)(Y,Ce)(CO3)F
12.1.11Parisite-(Ce)Ca(Ce,La)2(CO3)3F2
12.1.12Parisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2
12.1.13Synchysite-(Ce)Ca(Ce,La)(CO3)2F
12.1.14Synchysite-(Y)Ca(Y,Ce)(CO3)2F
12.1.15Synchysite-(Nd)Ca(Nd,Y,Gd)(CO3)2F
12.1.16Röntgenite-(Ce)Ca2(Ce,La)3(CO3)5F3
12.1.17Cordylite-(Ce)NaBaCe2(CO3)4F
12.1.19Huanghoite-(Ce)BaCe(CO3)2F
12.1.20Zhonghuacerite-(Ce)Ba2Ce(CO3)3F
12.1.21Cebaite-(Ce)Ba3Ce2(CO3)5F2
12.1.22ThorbastnäsiteTh(Ca,Ce)(CO3)2F2 · 3H2O
12.1.23PhosgenitePb2CO3Cl2
12.1.24BarstowitePb4Cl6(CO3) · H2O
12.1.25AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2O
12.1.26KettneriteCaBiCO3OF

Other Names for Stenonite

Name in Other Languages:
German:Stenonit
Spanish:Stenonita

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.

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

Localities for Stenonite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
Mineral and/or Locality  
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