Doyleite
A valid IMA mineral species
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About Doyleite
Formula:
Al(OH)3
Often contains small amounts of (stabilising?) F.
Colour:
White, creamy-white, bluish-white
Lustre:
Vitreous, Pearly, Dull
Hardness:
2½ - 3
Specific Gravity:
2.48
Crystal System:
Triclinic
Name:
Named by George Y. Chao, Judith Baker, Ann P. Sabina, and Andrew C. Roberts in 1985 in honor of Earl Joseph (Jess) Doyle (1905 - 1994) of Ottawa, Ontario, Canada. He was a mineral collector and discovered the species.
Co-Type Localities:
Polymorph of:
This page provides mineralogical data about Doyleite.
Unique Identifiers
Mindat ID:
1316
Long-form identifier:
mindat:1:1:1316:7
GUID
(UUID V4):
(UUID V4):
ec4c70de-f880-485e-882a-bf6d91b0cf10
IMA Classification of Doyleite
Approved
First published:
1985
Classification of Doyleite
4.FE.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
6.3.4.1
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
3 : X(OH)3
7.6.7
7 : Oxides and Hydroxides
6 : Oxides of Al
7 : Oxides and Hydroxides
6 : Oxides 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 |
|---|---|---|
| Doy | 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 Doyleite
Vitreous, Pearly, Dull
Transparency:
Transparent, Translucent, Opaque
Colour:
White, creamy-white, bluish-white
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
Perfect on {010}, fair on {100}.
Perfect on {010}, fair on {100}.
Density:
2.48(1) g/cm3 (Measured) 2.482 g/cm3 (Calculated)
Optical Data of Doyleite
Type:
Biaxial (+)
RI values:
nα = 1.545(1) nβ = 1.553(1) nγ = 1.566(1)
2V:
Measured: 77° , Calculated: 78°
Max Birefringence:
δ = 0.021
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:
None. Type description gives strong, r > v.
Chemistry of Doyleite
Mindat Formula:
Al(OH)3
Often contains small amounts of (stabilising?) F.
Often contains small amounts of (stabilising?) F.
Elements listed:
Crystallography of Doyleite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.00 Å, b = 5.17 Å, c = 4.98 Å
α = 97.5°, β = 118.6°, γ = 104.74°
α = 97.5°, β = 118.6°, γ = 104.74°
Ratio:
a:b:c = 0.967 : 1 : 0.963
Unit Cell V:
104.37 ų (Calculated from Unit Cell)
Morphology:
Type material: Crystals are tabular on (010), showing forms {010}, {101}, {101}, and occasionally {100} and {001}.
Comment:
Space group P-1 (Clark et al., 1998).
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0011076 | Doyleite | Clark G R, Rodgers K A, Henderson G S (1998) The crystal chemistry of doyleite, Al(OH)3 Zeitschrift fur Kristallographie 213 96-100 |  | 1998 | Mont St. Hilaire, Quebec | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.794 Å | (100) |
| 4.296 Å | (20) |
| 4.182 Å | (20) |
| 2.360 Å | (40) |
| 1.972 Å | (30) |
| 1.857 Å | (30) |
| 1.842 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Doyleite
Co-Type Localities:
General Appearance of Type Material:
Rosettes of platy crystals (MSH), and as pulverulent to compact globules, botryoidal and smooth porcelain like crusts and sheets (Francon).
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Ontario, Canada, number 48932 (holotype).
Royal Ontario Museum, Toronto, Ontario, Canada, number M41025a (holotype).
National Museum of Natural History, Washington, D.C., USA, number 162728 (cotype).
Royal Ontario Museum, Toronto, Ontario, Canada, number M41025a (holotype).
National Museum of Natural History, Washington, D.C., USA, number 162728 (cotype).
Geological Setting of Type Material:
In albitite veins in nepheline syenite (MSH) and in silicocarbonatite sills (Francon).
Associated Minerals at Type Locality:
Synonyms of Doyleite
Other Language Names for Doyleite
Common Associates
Associated Minerals Based on Photo Data:
| 39 photos of Doyleite associated with Gibbsite | Al(OH)3 |
| 7 photos of Doyleite associated with Evansite | Al3(PO4)(OH)6 · 6H2O |
| 2 photos of Doyleite associated with Thomsenolite | NaCa[AlF6] · H2O |
| 2 photos of Doyleite associated with Cryolite | Na2NaAlF6 |
| 2 photos of Doyleite associated with Bayerite | Al(OH)3 |
| 1 photo of Doyleite associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
| 1 photo of Doyleite associated with Sphalerite | ZnS |
| 1 photo of Doyleite associated with Fluorite | CaF2 |
| 1 photo of Doyleite associated with Scorodite | Fe3+AsO4 · 2H2O |
| 1 photo of Doyleite associated with Creedite | Ca3SO4Al2F8(OH)2 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 4.FE.05 | Amakinite | Fe2+(OH)2 |
| 4.FE.05 | Brucite | Mg(OH)2 |
| 4.FE.05 | Portlandite | Ca(OH)2 |
| 4.FE.05 | Pyrochroite | Mn(OH)2 |
| 4.FE.05 | Theophrastite | Ni(OH)2 |
| 4.FE.10 | Bayerite | Al(OH)3 |
| 4.FE.10 | Gibbsite | Al(OH)3 |
| 4.FE.10 | Nordstrandite | Al(OH)3 |
| 4.FE.15 | Böhmite | AlO(OH) |
| 4.FE.15 | Lepidocrocite | γ-Fe3+O(OH) |
| 4.FE.20 | Grimaldiite | CrO(OH) |
| 4.FE.20 | Heterogenite | Co3+O(OH) |
| 4.FE.25 | Feitknechtite | Mn3+O(OH) |
| 4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
| 4.FE.30 | Quenselite | PbMnO2(OH) |
| 4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
| 4.FE.40 | Feroxyhyte | Fe3+O(OH) |
| 4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
| 4.FE.45 | Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
| 4.FE.50 | Fuettererite | Pb3Cu2+6Te6+O6(OH)7Cl5 |
Fluorescence of Doyleite
Not fluorescent.
Other Information
Notes:
Not attacked by 1:1 HCl, H2SO4 or HNO3 at room temperature.
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 Doyleite
mindat.org URL:
https://www.mindat.org/min-1316.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Doyleite
Reference List:
Chao, G. Y., Baker, J., Sabina, A. P., Roberts, A. C. (1985) Doyleite, a new polymorph of Al(OH)3, and its relationship to bayerite, gibbsite and nordstrandite. The Canadian Mineralogist, 23 (1) 21-28
Localities for Doyleite
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.
Bolivia | |
| Chris Stefano specimen |
Canada (TL) | |
| 166-175. +3 other references |
| Horváth et al. (1998) |
| Horváth et al. (1998) | |
| 176-178. +3 other references |
China | |
| Zilong Wu (2003) |
| Songsheng Li (1993) |
| Robert Lavinsky specimen |
| Kecong Han and Shengyun Ma (1985) |
| Fabre Minerals |
| Dongmei Tang et al. (2006) |
Germany | |
| Walenta (1992) +2 other references |
Greece | |
| Schusser et al. (2022) |
| Grosch et al. (12/2021) |
Norway | |
| Husdal (2021) |
| Raade et al. (1990) +1 other reference |
South Africa | |
| Atanasova et al. (2016) |
| Species list by Dr. Hans Börner |
UK | |
| Young +3 other references |
USA | |
| Castor et al. (2004) |
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Baoshan, Yunnan, China