Strontiodresserite
A valid IMA mineral species
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About Strontiodresserite
Formula:
SrAl2(CO3)2(OH)4 · H2O
Colour:
White
Lustre:
Vitreous, Silky
Hardness:
2 - 3
Specific Gravity:
2.71
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1977 by John Leslie Jambor, Ann Phyllis Sabina Stenson, Andrew C. Roberts, and Bozidar Darko Sturman as the strontium analogue of dresserite.
Type Locality:
Isostructural with:
This page provides mineralogical data about Strontiodresserite.
Unique Identifiers
Mindat ID:
3774
Long-form identifier:
mindat:1:1:3774:3
IMA Classification of Strontiodresserite
Approved
IMA Formula:
SrAl2(CO3)2(OH)4·H2O
Approval year:
1977
Classification of Strontiodresserite
5.DB.10
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations
16b.2.1.3
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
2 : AmBn(XO3)pZqxH2O & with (m+n):p = 3:2
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
2 : AmBn(XO3)pZq
11.7.14
11 : Carbonates
7 : Carbonates of Al
11 : Carbonates
7 : Carbonates of Al
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 for Standard |
|---|---|---|
| Sdrs | 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 Strontiodresserite
Vitreous, Silky
Transparency:
Transparent, Translucent
Colour:
White
Streak:
White
Hardness:
2 - 3 on Mohs scale
Density:
2.71 g/cm3 (Measured) 2.73 g/cm3 (Calculated)
Optical Data of Strontiodresserite
Type:
Biaxial (-)
RI values:
nα = 1.510(4) nβ = 1.583(2) nγ = 1.595(4)
2V:
Measured: 42° , Calculated: 42°
Max. Birefringence:
δ = 0.085
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:
none
Comments:
Y ∥ elongation; X ⊥ elongation and in the plane of flattening.
Chemistry of Strontiodresserite
Mindat Formula:
SrAl2(CO3)2(OH)4 · H2O
Element Weights:
Crystallography of Strontiodresserite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Cell Parameters:
a = 9.168(4) Å, b = 16.037(6) Å, c = 5.598(3) Å
Ratio:
a:b:c = 0.572 : 1 : 0.349
Unit Cell V:
823.06 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space Group: [P bnm] (by analogy to dundasite).
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.97 Å | (10) |
| 3.021 Å | (8) |
| 6.04 Å | (7) |
| 2.648 Å | (6) |
| 2.052 Å | (6) |
| 1.738 Å | (6) |
| 4.41 Å | (5) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Strontiodresserite
General Appearance of Type Material:
Sparse coatings on quartz. Atoll-shaped rings up to 3 mm in diameter. Silky aggregates of white laths with dimensions 0.1x0.01x0.001 mm, arranged radially.
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, 13704; Royal Ontario Museum, Toronto, Canada, M34626, M34627.
Geological Setting of Type Material:
Silicocarbonatite sill.
Associated Minerals at Type Locality:
Synonyms of Strontiodresserite
Other Language Names for Strontiodresserite
Relationship of Strontiodresserite to other Species
Member of:
Other Members of Dresserite Group:
| Alumohydrocalcite | CaAl2(CO3)2(OH)4 · 4H2O | Tric. 1 : P1 |
| Dresserite | BaAl2(CO3)2(OH)4 · H2O | Orth. mmm(2/m2/m2/m) |
| Dundasite | PbAl2(CO3)2(OH)4 · H2O | Orth. mmm(2/m2/m2/m) |
| Grguricite | CaCr2(CO3)2(OH)4 · 4H2O | Tric. 1 : P1 |
| Hydrodresserite | BaAl2(CO3)2(OH)4 · 3H2O | Tric. 1 : P1 |
| Kochsándorite | CaAl2(CO3)2(OH)4 · H2O | Orth. mmm(2/m2/m2/m) : Pnma |
| Petterdite | PbCr3+2(CO3)2(OH)4 · H2O | Orth. mmm(2/m2/m2/m) |
| 'Unnamed (Ca-analogue of Petterdite)' | CaCr3+2(CO3)2(OH)4 · H2O |
Common Associates
Associations Based on Photo Data:
| 5 photos of Strontiodresserite associated with Quartz | SiO2 |
| 5 photos of Strontiodresserite associated with Montroyalite | Sr4Al8(CO3)3(OH,F)26 · 10-11H2O |
| 4 photos of Strontiodresserite associated with Nannoniite | Al2(OH)5F |
| 3 photos of Strontiodresserite associated with Cryolite | Na2NaAlF6 |
| 3 photos of Strontiodresserite associated with Fluorite | CaF2 |
| 2 photos of Strontiodresserite associated with Albite | Na(AlSi3O8) |
| 2 photos of Strontiodresserite associated with Halloysite | Al2Si2O5(OH)4 · n(H2O) |
| 2 photos of Strontiodresserite associated with Kaolinite | Al2(Si2O5)(OH)4 |
| 2 photos of Strontiodresserite associated with Celestine | SrSO4 |
| 1 photo of Strontiodresserite associated with Baryte | BaSO4 |
Related Minerals - Strunz-mindat Grouping
| 5.DB. | Rigrahamite | Na2Ca2Th2(CO3)4(HCO3)2(OH)4(H2O)7 |
| 5.DB. | Grguricite | CaCr2(CO3)2(OH)4 · 4H2O |
| 5.DB.05 | Para-alumohydrocalcite | CaAl2(CO3)2(OH)4 · 6H2O |
| 5.DB.05 | Nasledovite | PbMn3Al4(CO3)4(SO4)O5 · 5H2O |
| 5.DB.05 | 'UM1977-02-CO:AlCaH' | Ca6Al2(CO3)3O6 · 32H2O |
| 5.DB.05 | Alumohydrocalcite | CaAl2(CO3)2(OH)4 · 4H2O |
| 5.DB.10 | Kochsándorite | CaAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Dresserite | BaAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Dundasite | PbAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | 'Unnamed (Ca-analogue of Petterdite)' | CaCr3+2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Petterdite | PbCr3+2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Montroyalite | Sr4Al8(CO3)3(OH,F)26 · 10-11H2O |
| 5.DB.15 | Hydrodresserite | BaAl2(CO3)2(OH)4 · 3H2O |
| 5.DB.20 | Schuilingite-(Nd) | PbCu(Nd,Gd,Sm,Y)(CO3)3(OH) · 1.5H2O |
| 5.DB.25 | Sergeevite | Ca2Mg11(CO3)9(HCO3)4(OH)4 · 6H2O |
| 5.DB.30 | Szymańskiite | [H3O]+8[Hg2]2+8(Ni,Mg)6[CO3]12(OH)12 · 3H2O |
| 5.DB.35 | Lusernaite-(Y) | Y4Al(CO3)2(OH)10F · 6H2O |
| 5.DB.40 | Putnisite | SrCa4Cr3+8(CO3)8SO4(OH)16 · 23H2O |
Other Information
Notes:
Effervesces in dilute HCl.
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 Strontiodresserite
mindat.org URL:
https://www.mindat.org/min-3774.html
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Please feel free to link to this page.
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References for Strontiodresserite
Localities for Strontiodresserite
Showing 5 localities.
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.
Austria | |
| Prasnik et al. (2010) |
Canada (TL) | |
| 176-178. +3 other references |
France | |
| • Martin et al. (2004) |
Norway | |
| Tomas Husdal - collection |
Russia | |
| Vladykin et al. (2018) |
Quick NavTopAbout StrontiodresseriteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Condorcet, Nyons, Drôme, Auvergne-Rhône-Alpes, France