Sabugalite
A valid IMA mineral species - grandfathered
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About Sabugalite
Sabugal, Portugal
Formula:
HAl(UO2)4(PO4)4 · 16H2O
Colour:
Yellow
Lustre:
Resinous, Waxy, Greasy
Hardness:
2½
Specific Gravity:
3.20
Crystal System:
Monoclinic
Member of:
Name:
Named in 1951 by Clifford Frondel for the town of Sabugal, Portugal, near the type locality of the Bica Mine.
Autunite Group.
Note: most of the photos shown here do not seem show reliably confirmed sabugalite (see discussion in https://www.mindat.org/mesg-7-371177.html).
A hypothetical As analogue is Paulite (of Bültemann).
Note: most of the photos shown here do not seem show reliably confirmed sabugalite (see discussion in https://www.mindat.org/mesg-7-371177.html).
A hypothetical As analogue is Paulite (of Bültemann).
Unique Identifiers
Mindat ID:
3496
Long-form identifier:
mindat:1:1:3496:4
GUID
(UUID V4):
(UUID V4):
18b9ce4f-604e-4438-8275-83574feed3e7
IMA Classification of Sabugalite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1951
Classification of Sabugalite
8.EB.55
8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
40.2a.24.1
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
19.11.31
19 : Phosphates
11 : Phosphates of U
19 : Phosphates
11 : Phosphates of U
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 |
|---|---|---|
| Sbg | 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 Sabugalite
Resinous, Waxy, Greasy
Transparency:
Transparent, Translucent
Colour:
Yellow
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{001}
{001}
Fracture:
Micaceous
Comment:
Somewhat flexible.
Density:
3.20 g/cm3 (Measured) 3.150 g/cm3 (Calculated)
Optical Data of Sabugalite
Type:
Biaxial (-)
RI values:
nα = 1.564 - 1.565 nβ = 1.581 - 1.583 nγ = 1.582 - 1.584
Birefringence:
0.018
Max Birefringence:
δ = 0.018 - 0.019
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:
r > v strong
Optical Extinction:
Plates ordinarily extinguish uniformly; sometimes showing mottled extinction.
Pleochroism:
Visible
Comments:
X = colorless; Y = Z = pale yellow.
Chemistry of Sabugalite
Mindat Formula:
HAl(UO2)4(PO4)4 · 16H2O
Crystallography of Sabugalite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 19.426 Å, b = 9.483 Å, c = 9.850 Å
β = 96.16°
β = 96.16°
Ratio:
a:b:c = 2.049 : 1 : 1.039
Unit Cell V:
1,804.06 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Thin square or lath-like crystals dominated by {001}, that is uneven or warped. Other forms are narrow {100} and {h0l}, and rare 45° corner truncations by {hkl}. Crystals commonly in subparallel growths joined on {001}.
Comment:
data on synthetic material
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.69 Å | (100) |
| 4.86 Å | (90) |
| 4.39 Å | (40) |
| 3.47 Å | (80) |
| 2.452 Å | (20) |
| 2.389 Å | (20) |
| 2.188 Å | (60) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
Type Occurrence of Sabugalite
General Appearance of Type Material:
Densely aggregated crusts of very thin platy yellow crystals and scales up to about one millimeter on edge.
Place of Conservation of Type Material:
The Natural History Museum, London, England, number 1958,733.
Harvard University, Cambridge, Massachusetts, numbers 102192, 102193.
National Museum of Natural History, Washington, D.C., USA, numbers 106335–106337.
Harvard University, Cambridge, Massachusetts, numbers 102192, 102193.
National Museum of Natural History, Washington, D.C., USA, numbers 106335–106337.
Geological Setting of Type Material:
A secondary mineral in uranium deposits.
Associated Minerals at Type Locality:
Reference:
Frondel, C. (1951) Studies of uranium minerals (VIII): sabugalite, an aluminum-autunite. American Mineralogist: 36: 671-679.
Synonyms of Sabugalite
Other Language Names for Sabugalite
German:Sabugalit
Spanish:Sabugalita
Relationship of Sabugalite to other Species
Member of:
Other Members of this group:
| Autunite | Ca(UO2)2(PO4)2 · 10-12H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
| Bassetite | Fe2+(UO2)2(PO4)2 · 10H2O | Mon. 2/m |
| Heinrichite | Ba(UO2)2(AsO4)2 · 10H2O | Mon. 2/m : P2/b |
| Hydronováčekite | Mg(UO2)2(AsO4)2 · 12H2O | Tric. 1 : P1 |
| Kahlerite | Fe(UO2)2(AsO4)2 · 12H2O | Tet. 4/m : P42/n |
| Nováčekite | Mg(UO2)2(AsO4)2 · 10H2O | Mon. 2/m |
| Rauchite | Ni(UO2)2(AsO4)2 · 10H2O | Tric. 1 : P1 |
| Saléeite | Mg(UO2)2(PO4)2 · 10H2O | Mon. 2/m |
| Torbernite | Cu(UO2)2(PO4)2 · 12H2O | Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm |
| Uranocircite | Ba(UO2)2(PO4)2 · 10H2O | Tet. |
| Uranospinite | Ca(UO2)2(AsO4)2 · 10H2O | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| Zeunerite | Cu(UO2)2(AsO4)2 · 12H2O | Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm |
Common Associates
Associated Minerals Based on Photo Data:
| 10 photos of Sabugalite associated with Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| 8 photos of Sabugalite associated with Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| 2 photos of Sabugalite associated with Phosphuranylite | KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O |
| 2 photos of Sabugalite associated with Carnotite | K2(UO2)2(VO4)2 · 3H2O |
| 1 photo of Sabugalite associated with Curienite | Pb(UO2)2(VO4)2 · 5H2O |
| 1 photo of Sabugalite associated with Pitchblende | UO2 |
Related Minerals - Strunz-mindat Grouping
| 8.EB. | Meta-autunite Group | A1-2(UO2)2(TO4)2 · 5-10H2O |
| 8.EB.05 | Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
| 8.EB.05 | Heinrichite | Ba(UO2)2(AsO4)2 · 10H2O |
| 8.EB.05 | Kahlerite | Fe(UO2)2(AsO4)2 · 12H2O |
| 8.EB.05 | Hydronováčekite | Mg(UO2)2(AsO4)2 · 12H2O |
| 8.EB.05 | Saléeite | Mg(UO2)2(PO4)2 · 10H2O |
| 8.EB.05 | Torbernite | Cu(UO2)2(PO4)2 · 12H2O |
| 8.EB.05 | Uranocircite | Ba(UO2)2(PO4)2 · 10H2O |
| 8.EB.05 | Uranospinite | Ca(UO2)2(AsO4)2 · 10H2O |
| 8.EB.05 | Xiangjiangite | (Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2O |
| 8.EB.05 | Zeunerite | Cu(UO2)2(AsO4)2 · 12H2O |
| 8.EB.05 | Metarauchite | Ni(UO2)2(AsO4)2 · 8H2O |
| 8.EB.05 | Nováčekite | Mg(UO2)2(AsO4)2 · 10H2O |
| 8.EB.05 | Rauchite | Ni(UO2)2(AsO4)2 · 10H2O |
| 8.EB.10 | Bassetite | Fe2+(UO2)2(PO4)2 · 10H2O |
| 8.EB.10 | Lehnerite | Mn2+(UO2)2(PO4)2 · 8H2O |
| 8.EB.10 | Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
| 8.EB.10 | Metasaléeite | Mg(UO2)2(PO4)2 · 8H2O |
| 8.EB.10 | Metauranocircite | Ba(UO2)2(PO4)2 · 7H2O |
| 8.EB.10 | Metauranospinite | Ca(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Metaheinrichite | Ba(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Metakahlerite | Fe2+(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Metakirchheimerite | Co(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Metanováčekite | Mg(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| 8.EB.10 | Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
| 8.EB.10 | Przhevalskite | Pb2(UO2)3(PO4)2(OH)4 · 3H2O |
| 8.EB.10 | Pseudo-autunite | (H3O)4Ca2(UO2)2(PO4)4 · 5H2O |
| 8.EB.10 | Metanatroautunite | Na(UO2)(PO4)(H2O)3 |
| 8.EB.15 | Abernathyite | K(UO2)(AsO4) · 3H2O |
| 8.EB.15 | Chernikovite | (H3O)2(UO2)2(PO4)2 · 6H2O |
| 8.EB.15 | Meta-ankoleite | K2(UO2)2(PO4)2 · 6H2O |
| 8.EB.15 | Natrouranospinite | Na2(UO2)2(AsO4)2 · 5H2O |
| 8.EB.15 | Trögerite | (H3O)(UO2)(AsO4) · 3H2O |
| 8.EB.15 | Uramphite | (NH4)2(UO2)2(PO4)2 · 6H2O |
| 8.EB.15 | Uramarsite | (NH4)(UO2)(AsO4) · 3H2O |
| 8.EB.20 | Threadgoldite | Al(UO2)2(PO4)2(OH) · 8H2O |
| 8.EB.20 | Chistyakovaite | Al(UO2)2(AsO4)2(F,OH) · 6.5H2O |
| 8.EB.25 | Arsenuranospathite | Al(UO2)2(AsO4)2F · 20H2O |
| 8.EB.25 | Uranospathite | (Al,◻)(UO2)2(PO4)2F · 20(H2O,F) |
| 8.EB.30 | Vochtenite | (Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2O |
| 8.EB.35 | Coconinoite | Fe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2O |
| 8.EB.40 | Ranunculite | HAl(UO2)(PO4)(OH)3 · 4H2O |
| 8.EB.45 | Triangulite | Al3(UO2)4(PO4)4(OH)5 · 5H2O |
| 8.EB.50 | Furongite | Al13(UO2)7(PO4)13(OH)14 · 58H2O |
| 8.EB.60 | Horákite | (Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2O |
Fluorescence of Sabugalite
Fluoresces bright lemon yellow in both SW and LW.
Other Information
Thermal Behaviour:
The temperature of breakdown of the fully-hydrated to the meta-II phase is between 68° and 101°.
Notes:
Radioactive.
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 Sabugalite
mindat.org URL:
https://www.mindat.org/min-3496.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Sabugalite
Reference List:
Frondel, Clifford (1951) Studies of uranium minerals (VIII): Sabugalite, an aluminum-autunite. American Mineralogist, 36 (9-10) 671-679
Localities for Sabugalite
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.
Australia | |
| Jacobson et al. (2007) |
Belgium | |
| Dejonghe et al. (1982) +1 other reference |
Brazil | |
| Cassedanne (1983) |
| Cassedanne et al. (1999) |
Bulgaria | |
| Kalaidjiev et al. (2009) |
Canada | |
| Peatfield (n.d.) |
China | |
| Anthony |
Czech Republic | |
| Č +4 other references |
France | |
| - (1998) |
| - (1998) |
| - (1998) |
| R. Pierrot |
| R. Pierrot | |
| - (1998) |
| - (1998) | |
| R. Pierrot |
| R. Pierrot |
| R. Pierrot |
| R. Pierrot |
| Wittern et al. (Cologne) |
| |
| Lièvre et al. (2002) |
| Lièvre et al. (2002) |
| Lièvre et al. (2002) |
| "Les minéraux et al. (1977) |
| - (1998) | |
| - (1998) | |
| - (1998) | |
| - (1998) |
| R. Pierrot |
| Christophe Boutry collection |
| - (1998) |
| J. Geffroy |
| - (1998) |
| - (1998) |
Germany | |
| Weiß (1990) |
| Weiß (1990) |
| Weiß (1990) | |
Italy | |
| Vignola et al. (2011) |
| Stara (1990) |
| Garavelli et al. (1959) +2 other references | |
| Ref: Daniele Ravagnani - I giacimenti ... +1 other reference |
| Campostrini et al. (2006) |
Japan | |
| K. Watanabe (1976) |
Poland | |
| Lis et al. (1986) |
| Lis et al. (1986) | |
| Domańska-Siuda J. 2010: New data on secondary uranium minerals from the Western Sudetes (Poland) +2 other references |
Portugal | |
| LNEG - Laboratório Nacional de Energia ... |
| LNEG/Siorminp | |
| |
| |
| nautilus.fis.uc.pt (n.d.) |
| LNEG - Laboratório Nacional de Energia ... |
| Schnorrer-Köhler (1991) |
| Frondel (1951) |
| LNEG |
| LNEG Siorminp database |
| LNEG / Siorminp database |
| C. F. Torre de Assunção- Sobre as ... |
| |
| |
| LNEG - Laboratório Nacional de Energia ... |
Slovakia | |
| Kopáčik R. (2017) |
| Martin Števko |
| Števko M. (2022) |
South Africa | |
| Cairncross et al. (1995) |
Spain | |
| Grupo Mineralogista de Madrid (1994) |
| www.foro-minerales.com (n.d.) |
| www.foro-minerales.com (n.d.) | |
| D Respino collection | |
| A. M. I. Martins collection +1 other reference |
| Calvo Rebollar (2015) |
| www.foro-minerales.com (n.d.) |
UK | |
| Mineralogical Magazine 1965 34 : ... |
USA | |
| Anthony et al. (1995) |
| Bollin et al. (1958) |
| Holland et al. (1958) +2 other references |
| Holland et al. (1958) +2 other references | |
| Holland et al. (1958) +2 other references | |
| Scarborough (1981) |
| Holland et al. (1958) +2 other references | |
| Scarborough (1981) | |
| Holland et al. (1958) +2 other references | |
| Murdoch et al. (1966) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Pabian (1993) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| NBMG Bull 70 Geology and Mineral ... +3 other references | |
| Northrop et al. (1996) |
| NMBMMR Memoir 15 Geology and Technology ... +1 other reference | |
| Northrop et al. (1996) |
| Page et al. (1956) +3 other references | |
| Nevada Bureau of Mines and Geology NBMG ... |
| Collected by and in the collection of ... |
| Bullock (1981) |
| Kampf et al. (2018) |
| USGS TEI #514 +1 other reference |
| Page et al. (1956) +2 other references |
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Skalka uranium occurrence, Brezno, Brezno District, Banská Bystrica Region, Slovakia