Stenonite
A valid IMA mineral species
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About Stenonite
Formula:
(Sr,Ba,Na)2Al(CO3)F5
Colour:
Clourless, white
Lustre:
Vitreous
Hardness:
3½
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.
Unique Identifiers
Mindat ID:
3762
Long-form identifier:
mindat:1:1:3762:0
GUID
(UUID V4):
(UUID V4):
aeda7255-11b6-4825-809d-ffc68ccda215
IMA Classification of Stenonite
Approved
IMA Formula:
Sr2Al(CO3)F5
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:
Clourless, 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
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v distinct
Chemistry of Stenonite
Mindat Formula:
(Sr,Ba,Na)2Al(CO3)F5
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:
Reference:
Pauly H (1962) Stenonite a new carbonate-fluoride from Ivigtut, South Greenland. Meddelelser om Grønland 169(9): 1-24.
Other Language Names for Stenonite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
3.CG.3.CG. | Chukhrovite-(Ca) | Ca4.5Al2(SO4)F13 · 12H2O |
3.CG.10 | Chukhrovite-(Ce) | Ca3(Ce,Y)(AlF6)2(SO4)F · 10H2O |
3.CG.10 | Chukhrovite-(Y) | Ca3(Y,Ce)(AlF6)2(SO4)F · 10H2O |
3.CG.10 | Meniaylovite | Ca4[(SO4)(SiF6)(AlF6)]F · 12H2O |
3.CG.10 | Chukhrovite-(Nd) | Ca3(Nd,Y)Al2(SO4)F13 · 12H2O |
3.CG.15 | Creedite | Ca3SO4Al2F8(OH)2 · 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
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References for Stenonite
Localities for Stenonite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
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