Stenonite
A valid IMA mineral species
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About Stenonite
Nicolas Steno
Formula:
Sr2Al(CO3)F5
Colour:
Colourless, white
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
3.86
Crystal System:
Monoclinic
Name:
Named after Nicolas Steno/Nicolaus Stenonius (Danish: Niels Steensen) (1/11 January 1638 - 25 November/5 December 1686), Danish physician, discoverer of the law of constancy of interfacial angles.
This page provides mineralogical data about Stenonite.
Unique Identifiers
Mindat ID:
3762
Long-form identifier:
mindat:1:1:3762:0
IMA Classification of Stenonite
Approved
Classification of Stenonite
3.CG.05
3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO3, SO4, PO4
12.1.1.1
12 : COMPOUND HALIDES
1 : Miscellaneous
12 : COMPOUND HALIDES
1 : Miscellaneous
12.1.7
12 : Carbonates with other anions
1 : Carbonates with halides
12 : Carbonates with other anions
1 : Carbonates with halides
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Sten | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Stenonite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Colourless, white
Hardness:
3½ on Mohs scale
Cleavage:
Distinct/Good
Good on {001} {120}
Good on {001} {120}
Density:
3.86(7) g/cm3 (Measured) 3.847 g/cm3 (Calculated)
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
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
r > v distinct
Chemistry of Stenonite
Mindat Formula:
Sr2Al(CO3)F5
Element Weights:
Crystallography of Stenonite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.450(2) Å, b = 8.704(2) Å, c = 13.050(3) Å
β = 98.72(2)°
β = 98.72(2)°
Ratio:
a:b:c = 0.626 : 1 : 1.499
Unit Cell V:
611.89 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Massive
Comment:
Space Group: P21/n.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005196 | Stenonite | Hawthorne F C (1984) The crystal structure of stenonite and the classification of the aluminofluoride minerals The Canadian Mineralogist 22 245-251 |  | 1984 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.97 Å | (s) |
| 1.706 Å | (s) |
| 2.158 Å | (ms) |
| 2.291 Å | (m) |
| 1.747 Å | (m) |
| 1.645 Å | (m) |
| 1.590 Å | (m) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Stenonite
General Appearance of Type Material:
Cleavable, massive, to 4 cm.
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark, 1965.16–1965.22, 1981.1016–1981.1018, 1981.1021, 1981.1060. Natural History Museum, Paris, France,; The Natural History Museum, London, England, 1966,536
Geological Setting of Type Material:
Contact between cryolite-siderite and fluorite rich rocks.
Associated Minerals at Type Locality:
Other Language Names for Stenonite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 3.CG.3.CG. | Chukhrovite-(Ca) | Ca3Ca1.5Al2(SO4)F13 · 12H2O |
| 3.CG.10 | Meniaylovite | Ca4[(SO4)(SiF6)(AlF6)]F · 12H2O |
| 3.CG.10 | Chukhrovite-(Ce) | Ca3CeAl2(SO4)F13 · 12H2O |
| 3.CG.10 | Chukhrovite-(Y) | Ca3YAl2(SO4)F13 · 12H2O |
| 3.CG.10 | Chukhrovite-(Nd) | Ca3NdAl2(SO4)F13 · 12H2O |
| 3.CG.15 | Creedite | Ca3Al2(SO4)(OH)2F8 · 2H2O |
| 3.CG.20 | Bøggildite | Na2Sr2Al2PO4F9 |
| 3.CG.25 | Thermessaite-(NH4) | (NH4)2AlF3(SO4) |
| 3.CG.25 | Thermessaite | K2AlF3(SO4) |
| 3.CG.30 | Kruijenite | Ca4Al4(SO4)F2(OH)16 · 2H2O |
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.
Internet Links for Stenonite
mindat.org URL:
https://www.mindat.org/min-3762.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
References for Stenonite
Localities for Stenonite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Croatia | |
| Nahill et al. (2006, October) |
Greenland (TL) | |
| H. Pauly: Medd. Grønland 169 (9) +2 other references |
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Ivigtut Mine, Ivigtut stock, Arsuk Fjord, Sermersooq, Greenland