Bendadaite
A valid IMA mineral species
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About Bendadaite
Formula:
Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O
Colour:
Blackish green to dark brownish
Lustre:
Sub-Adamantine, Vitreous
Hardness:
3
Specific Gravity:
3.15
Crystal System:
Monoclinic
Member of:
Name:
Named after the type locality, the Bendada phosphate pegmatite, Bendada Quarries, Sabugal, Guarda District, Portugal.
Co-Type Localities:
Isostructural with:
Arthurite Group. The arsenate analogue of Whitmoreite.
The divalent Fe may be partly oxidised.
Chemically related to césarferreiraite.
The divalent Fe may be partly oxidised.
Chemically related to césarferreiraite.
Unique Identifiers
Mindat ID:
31722
Long-form identifier:
mindat:1:1:31722:5
GUID
(UUID V4):
(UUID V4):
bbf02827-cc32-4ebe-891c-7a1f0a2af813
IMA Classification of Bendadaite
Approved
Approval year:
2007
First published:
2010
Type description reference:
Kolitsch, U., Atencio, D., Chukanov, N. V., Zubkova, N. V., Menezes Filho, L. A. D., Coutinho, J. M. V., Birch, W. D., Schlüter, J., Pohl, D., Kampf, A. R., Steele, I. M., Favreau, G., Nasdala, L., Möckel, S., Giester, G., Pushcharovsky, D. Yu. (2010) Bendadaite, a new iron arsenate mineral of the arthurite group. Mineralogical Magazine, 74 (3) 469-486 doi:10.1180/minmag.2010.074.3.469
Classification of Bendadaite
8.DC.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
42.11.20.6
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
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 |
---|---|---|
Bdd | 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 Bendadaite
Sub-Adamantine, Vitreous
Transparency:
Translucent
Colour:
Blackish green to dark brownish
Streak:
Greenish yellow
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
parallel to {010}
parallel to {010}
Fracture:
Irregular/Uneven
Density:
3.15(10) g/cm3 (Measured) 3.193 g/cm3 (Calculated)
Optical Data of Bendadaite
Type:
Biaxial (+)
RI values:
nα = 1.734(3) nβ = 1.759(3) nγ = 1.787(4)
2V:
Measured: 85° (4), Calculated: 88°
Max Birefringence:
δ = 0.053
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:
High
Optical Extinction:
Optical axis plane is parallel to (010); X ≈ a; Z ≈ c.
Pleochroism:
Strong
Comments:
X = pale reddish brown; Y = yellowish brown; Z = dark yellowish brown.
Comments:
Absorption: Z > Y > X.
Chemistry of Bendadaite
Mindat Formula:
Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O
Elements listed:
Crystallography of Bendadaite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 10.239 Å, b = 9.713 Å, c = 5.552 Å
β = 94.11°
β = 94.11°
Ratio:
a:b:c = 1.054 : 1 : 0.572
Unit Cell V:
550.73 ų (Calculated from Unit Cell)
Z:
2
Twinning:
None
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
10.22 Å | (100) |
7.036 Å | (80) |
4.833 Å | (30) |
4.520 Å | (50) |
3.490 Å | (20) |
2.907 Å | (30) |
2.865 Å | (40) |
Comments:
Bendada Mines, Guarda, Portugal. The data are from the type description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Bendadaite
Co-Type Localities:
General Appearance of Type Material:
Tufts (<0.1 mm long) and flattened radiating aggregates.
Place of Conservation of Type Material:
Natural History Museum, Vienna, Austria (catalogue number N 8160). The co-type material has been deposited in the Museu de Geociências, Instituto de Geociências, Universidade de São Paulo, Brazil (catalogue number DR625).
Geological Setting of Type Material:
Pegmatite
Associated Minerals at Type Locality:
Reference:
Kolitsch, U., Atencio, D., Chukanov, N.V., Zubkova, N.V., Menezes Filho, L.A.D., Coutinho, J.M.V., Birch, W.D., Schlüter, J., Pohl, D., Kampf, A.R., Steele, I.M., Favreau, G., Nasdala, L., Möckel, S., Giester, G., Pushcharovsky, D.Yu. (2010) Bendadaite, a new iron arsenate mineral of the arthurite group. Mineralogical Magazine: 74: 469-486.
Synonyms of Bendadaite
Other Language Names for Bendadaite
German:Bendadait
Relationship of Bendadaite to other Species
Member of:
Other Members of this group:
Arthurite | CuFe3+2(AsO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
Cobaltarthurite | (Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
Earlshannonite | Mn2+Fe3+2(PO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
Kunatite | CuFe3+2(PO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
Ojuelaite | ZnFe3+2(AsO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
UKI-2006-(PO:AlCuFeH) | Fe2+Al3+2(PO4)2(OH)2 · 4H2O | |
UM2006-27-PO:FeHZn | ZnFe3+2(PO4)2(OH)2 · 4H2O | Mon. |
Whitmoreite | Fe2+Fe3+2(PO4)2(OH)2 · 4H2O | Mon. 2/m : P21/b |
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Bendadaite associated with Arthurite | CuFe3+2(AsO4)2(OH)2 · 4H2O |
3 photos of Bendadaite associated with Hydroxylherderite | CaBe(PO4)(OH) |
3 photos of Bendadaite associated with Goyazite | SrAl3(PO4)(PO3OH)(OH)6 |
3 photos of Bendadaite associated with Arsenopyrite | FeAsS |
3 photos of Bendadaite associated with Ojuelaite | ZnFe3+2(AsO4)2(OH)2 · 4H2O |
2 photos of Bendadaite associated with Scorodite | Fe3+AsO4 · 2H2O |
1 photo of Bendadaite associated with Mansfieldite-Scorodite Series | AlAsO4 . 2H2O - Fe2+AsO4 . 2H2O |
1 photo of Bendadaite associated with Pharmacosiderite Supergroup | |
1 photo of Bendadaite associated with Löllingite | FeAs2 |
Related Minerals - Strunz-mindat Grouping
8.DC. | Ianbruceite | Zn2(AsO4)(OH) · 3H2O |
8.DC. | Césarferreiraite | Fe2+ Fe3+2(AsO4)2(OH)2 · 8H2O |
8.DC. | Ferrivauxite | Fe3+Al2(PO4)2(OH)3 · 5H2O |
8.DC.05 | Nissonite | Cu2Mg2(PO4)2(OH)2 · 5H2O |
8.DC.07 | Euchroite | Cu2(AsO4)(OH) · 3H2O |
8.DC.10 | Legrandite | Zn2(AsO4)(OH) · H2O |
8.DC.12 | Strashimirite | Cu8(AsO4)4(OH)4 · 5H2O |
8.DC.15 | Arthurite | CuFe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Earlshannonite | Mn2+Fe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | Ojuelaite | ZnFe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Whitmoreite | Fe2+Fe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | Cobaltarthurite | (Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2O |
8.DC.15 | Kunatite | CuFe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | UM2006-27-PO:FeHZn | ZnFe3+2(PO4)2(OH)2 · 4H2O |
8.DC.15 | UKI-2006-(PO:AlCuFeH) | Fe2+Al3+2(PO4)2(OH)2 · 4H2O |
8.DC.17 | Kleemanite | ZnAl2(PO4)2(OH)2 · 3H2O |
8.DC.20 | Bermanite | Mn2+Mn3+2(PO4)2(OH)2 · 4H2O |
8.DC.20 | Coralloite | Mn2+Mn3+2(AsO4)2(OH)2 · 4H2O |
8.DC.20 | Magnesiobermanite | MgMn3+2(PO4)2(OH)2 · 4H2O |
8.DC.22 | Kovdorskite | Mg2(PO4)(OH) · 3H2O |
8.DC.25 | Ferristrunzite | Fe3+Fe3+2(PO4)2(OH)3 · 5H2O |
8.DC.25 | Ferrostrunzite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Metavauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.25 | Metavivianite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Strunzite | Mn2+Fe3+2(PO4)2(OH)2 · 6H2O |
8.DC.25 | Zincostrunzite | ZnFe3+2(PO4)2(OH)2 · 6.5H2O |
8.DC.27 | Beraunite | Fe3+6(PO4)4O(OH)4 · 6H2O |
8.DC.27 | Tvrdýite | Fe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2O |
8.DC.27 | Zincoberaunite | ZnFe3+5(PO4)4(OH)5 · 6H2O |
8.DC.30 | Gordonite | MgAl2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Laueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Mangangordonite | Mn2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Paravauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Pseudolaueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Sigloite | Fe3+Al2(PO4)2(OH)3 · 7H2O |
8.DC.30 | Stewartite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Ushkovite | MgFe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Ferrolaueite | Fe2+Fe3+2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Kastningite | (Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O |
8.DC.30 | Maghrebite | MgAl2(AsO4)2(OH)2 · 8H2O |
8.DC.30 | Nordgauite | MnAl2(PO4)2(F,OH)2 · 5H2O |
8.DC.30 | Kayrobertsonite | [MnAl2(PO4)2(OH)2(H2O)4] · 2H2O |
8.DC.30 | Kummerite | Mn2+Fe3+Al(PO4)2(OH)2 · 8H2O |
8.DC.32 | Tinticite | Fe3+3(PO4)2(OH)3 · 3H2O |
8.DC.32 | Kamarizaite | Fe3+3(AsO4)2(OH)3 · 3H2O |
8.DC.35 | Vauxite | Fe2+Al2(PO4)2(OH)2 · 6H2O |
8.DC.37 | Vantasselite | Al4(PO4)3(OH)3 · 9H2O |
8.DC.40 | Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
8.DC.45 | Gormanite | (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O |
8.DC.45 | Souzalite | (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O |
8.DC.47 | Kingite | Al3(PO4)2F2(OH) · 7H2O |
8.DC.50 | Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
8.DC.50 | Allanpringite | Fe3+3(PO4)2(OH)3 · 5H2O |
8.DC.50 | Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
8.DC.52 | Kribergite | Al5(PO4)3(SO4)(OH)4 · 4H2O |
8.DC.55 | Mapimite | Zn2Fe3+3(AsO4)3(OH)4 · 10H2O |
8.DC.57 | Ogdensburgite | Ca2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O |
8.DC.60 | Nevadaite | (Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O |
8.DC.60 | Cloncurryite | Cu0.5(VO)0.5Al2(PO4)2F2 · 5H2O |
8.DC.62 | Kenngottite | Mn2+3Fe3+4(PO4)4(OH)6(H2O)2 |
8.DC.67 | Molinelloite | Cu(H2O)(OH)V4+O(V5+O4) |
8.DC.70 | Whitecapsite | H16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2O |
8.DC.75 | Heimite | PbCu2(AsO4)(OH)3 · 2H2O |
8.DC.80 | Lednevite | Cu[PO3(OH)] · H2O |
Fluorescence of Bendadaite
None
Other Information
Notes:
Bendadaite dissolves in hot dilute HCl or HNO3 but not in cold acids.
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 Bendadaite
mindat.org URL:
https://www.mindat.org/min-31722.html
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References for Bendadaite
Reference List:
Kolitsch, U., Atencio, D., Chukanov, N. V., Zubkova, N. V., Menezes Filho, L. A. D., Coutinho, J. M. V., Birch, W. D., Schlüter, J., Pohl, D., Kampf, A. R., Steele, I. M., Favreau, G., Nasdala, L., Möckel, S., Giester, G., Pushcharovsky, D. Yu. (2010) Bendadaite, a new iron arsenate mineral of the arthurite group. Mineralogical Magazine, 74 (3) 469-486 doi:10.1180/minmag.2010.074.3.469
Localities for Bendadaite
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.
Brazil (TL) | |
| Kolitsch et al. (2010) |
Chile | |
| Kolitsch et al. (2010) |
Czech Republic | |
| Sejkora et al. (2019) |
France | |
| Meisser (2010) |
| Queneau (n.d.) |
Greece | |
| no description given yet] +1 other reference |
| Rieck et al. (2018) |
| Rieck et al. (2018) |
Italy | |
| Kolitsch et al. (2010) +1 other reference |
Japan | |
| Satoshi Matsubara et al. (2009) |
OHNISHI et al. (2013) | |
Morocco | |
| Kolitsch et al. (2010) |
Namibia | |
| Veldsman et al. (04/21) +1 other reference |
Portugal (TL) | |
| Kolitsch et al. (2010) |
Spain | |
| Calvo Rebollar (2015) |
Quick NavTopAbout BendadaiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Almerindo mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil