Hydrodresserite
A valid IMA mineral species
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About Hydrodresserite
Formula:
BaAl2(CO3)2(OH)4 · 3H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
3 - 4
Specific Gravity:
2.80
Crystal System:
Triclinic
Member of:
Name:
Named in 1977 by John Leslie Jambor, Ann Phyllis Sabina [Stenson], and Bozidar Darko Sturman in allusion to it being a fully hydrated equivalent of dresserite.
Type Locality:
Isostructural with:
Visually similar to dresserite. In contrast to dresserite, hydrodresserite's characteristic features are that it forms coarser crystals, resulting in rougher spheres, and hydrodresserite crystals are more translucent than dresserite.
Unique Identifiers
Mindat ID:
1972
Long-form identifier:
mindat:1:1:1972:5
GUID
(UUID V4):
(UUID V4):
b9e06494-329a-4efb-912e-440a6e0ff34e
IMA Classification of Hydrodresserite
Approved
Approval year:
1976
First published:
1977
Classification of Hydrodresserite
5.DB.15
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.2.2.1
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
11.7.13
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 |
|---|---|---|
| Hdrs | 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 Hydrodresserite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
3 - 4 on Mohs scale
Cleavage:
Perfect
{010} and {210}.
{010} and {210}.
Density:
2.80(2) g/cm3 (Measured) 2.817(1) g/cm3 (Calculated)
Optical Data of Hydrodresserite
Type:
Biaxial (-)
RI values:
nα = 1.502(2) nβ = 1.594(1) nγ = 1.595(1)
2V:
Measured: 17° (1), Calculated: 10°
Max Birefringence:
δ = 0.093
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:
Moderate
Dispersion:
relatively strong
Chemistry of Hydrodresserite
Mindat Formula:
BaAl2(CO3)2(OH)4 · 3H2O
Crystallography of Hydrodresserite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.7545(5) Å, b = 10.4069(5) Å, c = 5.6322(3) Å
α = 95.695°, β = 92.273°, γ = 115.643°
α = 95.695°, β = 92.273°, γ = 115.643°
Ratio:
a:b:c = 0.937 : 1 : 0.541
Unit Cell V:
510.71 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals are elongate [001], terminated (102), with prominent {010} and narrow {210}.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0005186 | Hydrodresserite | Szymanski J T (1982) The crystal structure of hydrodresserite BaAl2(CO3)2(OH)4.3H2O The Canadian Mineralogist 20 253-262 |  | 1982 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.52 Å | (100) |
| 3.42 Å | (70) |
| 3.10 Å | (60) |
| 4.26 Å | (50) |
| 8.75 Å | (40) |
| 9.30 Å | (30) |
| 5.32 Å | (30) |
Comments:
Francon quarry, Québec, Canada. Data from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations |
Type Occurrence of Hydrodresserite
General Appearance of Type Material:
White spheres and hemispheres which average about 2 mm in diameter and consist of radiating fibrous, colorless crystals.
Place of Conservation of Type Material:
Type material is stored at the Royal Ontario Museum (specimen M34547), and in the National Mineral Collection, Geological Survey of Canada (No. 13936).
Geological Setting of Type Material:
Alkalic sill.
Associated Minerals at Type Locality:
Reference:
JAMBOR, J.L., SABINA, A.P., and STURMAN,B.D. (1977) Hydrodresserite, a new Ba-Al carbonate from a silicocarbonatite sill, Montreal Island, Quebec. Canadian Mineralogist, 15, 399-404.
Synonyms of Hydrodresserite
Other Language Names for Hydrodresserite
Relationship of Hydrodresserite to other Species
Member of:
Other Members of this group:
| Alumohydrocalcite | CaAl2(CO3)2(OH)4 · 4H2O | Tric. 1 : P1 |
| Dresserite | BaAl2(CO3)2(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) |
| Dundasite | PbAl2(CO3)2(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) |
| Grguricite | CaCr2(CO3)2(OH)4 · 4H2O | Tric. 1 : P1 |
| Kochsándorite | CaAl2(CO3)2(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
| Petterdite | PbCr3+2(CO3)2(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) |
| Strontiodresserite | SrAl2(CO3)2(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) |
| Unnamed (Ca-analogue of Petterdite) | CaCr3+2(CO3)2(OH)4 · H2O |
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Hydrodresserite associated with Dresserite | BaAl2(CO3)2(OH)4 · H2O |
| 3 photos of Hydrodresserite associated with Baryte | BaSO4 |
| 2 photos of Hydrodresserite associated with Weloganite | Na2Sr3Zr(CO3)6 · 3H2O |
| 2 photos of Hydrodresserite associated with Calcite | CaCO3 |
| 2 photos of Hydrodresserite associated with UM1990-28-OHF:Al | Al(OH,F)3 |
| 1 photo of Hydrodresserite associated with Dawsonite | NaAlCO3(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 5.DB. | Grguricite | CaCr2(CO3)2(OH)4 · 4H2O |
| 5.DB.05 | Alumohydrocalcite | CaAl2(CO3)2(OH)4 · 4H2O |
| 5.DB.05 | Nasledovite | PbMn3Al4(CO3)4(SO4)O5 · 5H2O |
| 5.DB.05 | Para-alumohydrocalcite | CaAl2(CO3)2(OH)4 · 6H2O |
| 5.DB.05 | UM1977-02-CO:AlCaH | Ca6Al2(CO3)3O6 · 32H2O |
| 5.DB.10 | Dresserite | BaAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Dundasite | PbAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Montroyalite | Sr4Al8(CO3)3(OH,F)26 · 10-11H2O |
| 5.DB.10 | Strontiodresserite | SrAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Petterdite | PbCr3+2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Kochsándorite | CaAl2(CO3)2(OH)4 · H2O |
| 5.DB.10 | Unnamed (Ca-analogue of Petterdite) | CaCr3+2(CO3)2(OH)4 · H2O |
| 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:
The mineral is readily soluble in dilute HCl.
Special Storage/
Display Requirements:
Display Requirements:
Hydrodresserite is unstable at most atmospheric conditions and dehydrates to dresserite.
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 Hydrodresserite
mindat.org URL:
https://www.mindat.org/min-1972.html
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References for Hydrodresserite
Reference List:
Jambor, J. L., Sabina, A. P., Sturman, B. D. (1977) Hydrodresserite, a new Ba-Al carbonate from a silicocarbonatite sill, Montreal Island, Quebec. The Canadian Mineralogist, 15 (3) 399-404
Localities for Hydrodresserite
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.
Canada (TL) | |
| 176-178. +3 other references |
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Francon quarry, Montréal, Québec, Canada