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Stenonite

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Nicolas Steno
Formula:
(Sr,Ba,Na)2Al(CO3)F5
Colour:
Clourless, white
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.86
Crystal System:
Monoclinic
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.


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Classification of StenoniteHide

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

Physical Properties of StenoniteHide

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

Optical Data of StenoniteHide

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 StenoniteHide

Formula:
(Sr,Ba,Na)2Al(CO3)F5
IMA Formula:
Sr2Al(CO3)F5

Crystallography of StenoniteHide

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

Type Occurrence of StenoniteHide

Geological Setting of Type Material:
Contact between cryolite-siderite and fluorite rich rocks.
Associated Minerals at Type Locality:

Other Language Names for StenoniteHide

German:Stenonit
Spanish:Stenonita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Pyrite2 photos of Stenonite associated with Pyrite on mindat.org.
Siderite1 photo of Stenonite associated with Siderite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

3.CG.10Chukhrovite-(Ce)Ca3(Ce,Y)[F|SO4|(AlF6)2] · 10H2OIso.
3.CG.10Chukhrovite-(Y)Ca3(Y,Ce)[F|SO4|(AlF6)2] · 10H2OIso.
3.CG.10MeniayloviteCa4[F|SO4|SiF6|AlF6] · 12H2OIso. m3 (2/m 3) : Fd3
3.CG.10Chukhrovite-(Nd)Ca3(Nd,Y)Al2(SO4)F13·12H2OIso. m3 (2/m 3) : Fd3
3.CG.15CreediteCa3SO4Al2F8(OH)2 · 2H2OMon. 2/m : B2/b
3.CG.20BøggilditeNa2Sr2Al2PO4F9Mon.
3.CG.25ThermessaiteK2AlF3(SO4)Orth. mmm (2/m 2/m 2/m) : Pbcn

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

12.1.1NorthupiteNa3Mg(CO3)2ClIso. m3 (2/m 3) : Fd3
12.1.2BarentsiteNa7Al(HCO3)2(CO3)2F4Tric.
12.1.3RouvilleiteNa3(Ca,Mn,Fe)2(CO3)3FMon. 2/m : B2/b
12.1.4ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
12.1.5DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)Orth. mmm (2/m 2/m 2/m) : Pnma
12.1.6BrenkiteCa2(CO3)F2Orth.
12.1.8Bastnäsite-(Ce)Ce(CO3)FHex. 6 m2 : P6c2
12.1.9Bastnäsite-(La)La(CO3)FHex.
12.1.10Bastnäsite-(Y)Y(CO3)FHex. 6 m2 : P62c
12.1.11Parisite-(Ce)CaCe2(CO3)3F2Mon. m : Bb
12.1.12Parisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2
12.1.13Synchysite-(Ce)CaCe(CO3)2FMon. 2/m : B2/b
12.1.14Synchysite-(Y)CaY(CO3)2FMon. 2/m : B2/b
12.1.15Synchysite-(Nd)CaNd(CO3)2F
12.1.16Röntgenite-(Ce)Ca2(Ce,La)3(CO3)5F3Trig. 3 : R3
12.1.17Cordylite-(Ce)NaBaCe2(CO3)4F Hex.
12.1.19Huanghoite-(Ce)BaCe(CO3)2FTrig. 3m (3 2/m) : R3m
12.1.20Zhonghuacerite-(Ce)Ba2Ce(CO3)3FTrig.
12.1.21Cebaite-(Ce)Ba3Ce2(CO3)5F2
12.1.22ThorbastnäsiteThCa(CO3)2F2 · 3H2O
12.1.23PhosgenitePb2CO3Cl2Tet. 4/mmm (4/m 2/m 2/m) : P4/mbm
12.1.24BarstowitePb4Cl6(CO3) · H2OMon. 2/m : P21/m
12.1.25AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2OTric. 1 : P1
12.1.26KettneriteCaBiCO3OFOrth. mmm (2/m 2/m 2/m)

Other InformationHide

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 StenoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Meddelelser om Grønland (1962) 169(9): 1-24.
American Mineralogist (1963): 48: 1178.
Canadian Mineralogist (1984): 22: 245-251.

Internet Links for StenoniteHide

Localities for StenoniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Greenland (TL)
 
  • Sermersooq
    • Arsuk Fjord
      • Ivittuut (Ivigtut)
H. Pauly: Medd. Grønland 169(9):1-24 (1962); Amer. Mineral. 48:1178 (1963); Petersen, O.V. and Secher, K. (1993): The minerals of Greenland. Mineralogical Record 24 (2): 1-65 (p.36)
Mineral and/or Locality  
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