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Bendadaite

A valid IMA mineral species
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03111190014950404187232.jpg
Bendadaite

Almerindo mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil
09284860014950404181363.jpg
Bendadaite

Pira Inferida, Fenugu Sibiri Mine, Gonnosfanadiga, South Sardinia Province, Sardinia, Italy
08010050017095273991098.jpg
Bendadaite, etc.

Esperanza Mine, Kaminiza mines, Km 3, Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
00477370014947140684921.jpg
Bendadaite

Almerindo mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil
05767330014948584911301.jpg
Bendadaite

Pira Inferida, Fenugu Sibiri Mine, Gonnosfanadiga, South Sardinia Province, Sardinia, Italy
08010050017095273991098.jpg
Bendadaite, etc.

Esperanza Mine, Kaminiza mines, Km 3, Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
03111190014950404187232.jpg
Bendadaite

Almerindo mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil
09284860014950404181363.jpg
Bendadaite

Pira Inferida, Fenugu Sibiri Mine, Gonnosfanadiga, South Sardinia Province, Sardinia, Italy
Hide all sections | Show all sections

About BendadaiteHide

00390150014947723716335.jpg
A view of the locality

Bendada Mines, Bendada, Sabugal, Guarda, Portugal
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:
Arthurite Group
Name:
Named after the type locality, the Bendada phosphate pegmatite, Bendada Quarries, Sabugal, Guarda District, Portugal.
Isostructural with:
Whitmoreite
Arthurite Group. The arsenate analogue of Whitmoreite.

The divalent Fe may be partly oxidised.

Chemically related to césarferreiraite.


Unique IdentifiersHide

Mindat ID:
31722
Long-form identifier:
mindat:1:1:31722:5
GUID
(UUID V4):
bbf02827-cc32-4ebe-891c-7a1f0a2af813

IMA Classification of BendadaiteHide

Classification of BendadaiteHide

Strunz-mindat (2024):
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
Dana 8th ed.:
42.11.20.6

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
BddIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of BendadaiteHide

Lustre:
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}
Fracture:
Irregular/Uneven
Density:
3.15(10) g/cm3 (Measured)    3.193 g/cm3 (Calculated)

Optical Data of BendadaiteHide

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.
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 BendadaiteHide

Mindat Formula:
Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O
Elements listed:
As, Fe, H, O - search for minerals with similar chemistry

Crystallography of BendadaiteHide

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°
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]

Type Occurrence of BendadaiteHide

Co-Type Localities:
ⓘ Almerindo mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil
ⓘ Bendada Mines, Bendada, Sabugal, Guarda, Portugal
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:
ScoroditeMansfieldite
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.
Download:
https://rruff.info/rruff_1.0/uploads/MM74_469.pdf

Synonyms of BendadaiteHide

Other Language Names for BendadaiteHide

German:Bendadait

Relationship of Bendadaite to other SpeciesHide

Member of:
Arthurite Group
Other Members of this group:
ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Bendadaite associated with ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2O
3 photos of Bendadaite associated with HydroxylherderiteCaBe(PO4)(OH)
3 photos of Bendadaite associated with GoyaziteSrAl3(PO4)(PO3OH)(OH)6
3 photos of Bendadaite associated with ArsenopyriteFeAsS
3 photos of Bendadaite associated with OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2O
2 photos of Bendadaite associated with ScoroditeFe3+AsO4 · 2H2O
1 photo of Bendadaite associated with Mansfieldite-Scorodite SeriesAlAsO4 . 2H2O - Fe2+AsO4 . 2H2O
1 photo of Bendadaite associated with Pharmacosiderite Supergroup
1 photo of Bendadaite associated with LöllingiteFeAs2

Related Minerals - Strunz-mindat GroupingHide

8.DC.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.CésarferreiraiteFe2+ Fe3+2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.FerrivauxiteFe3+Al2(PO4)2(OH)3 · 5H2OTric. 1 : P1
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2OMon. 2/m : B2/b
8.DC.27ZincoberauniteZnFe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.30Kayrobertsonite[MnAl2(PO4)2(OH)2(H2O)4] · 2H2OTric. 1 : P1
8.DC.30KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon. m : Bm
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b
8.DC.62KenngottiteMn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : P2/b
8.DC.67MolinelloiteCu(H2O)(OH)V4+O(V5+O4)Tric. 1 : P1
8.DC.70WhitecapsiteH16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2OHex. 6/m : P63/m
8.DC.75HeimitePbCu2(AsO4)(OH)3 · 2H2OMon. 2/m
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/b

Fluorescence of BendadaiteHide

Other InformationHide

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 BendadaiteHide

References for BendadaiteHide

Localities for BendadaiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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.
Brazil (TL)
 
  • Minas Gerais
    • Divino das Laranjeiras
      • Linópolis
Kolitsch et al. (2010)
Chile
 
  • Atacama
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
Kolitsch et al. (2010)
Czech Republic
 
  • Karlovy Vary Region
    • Sokolov District
      • Krásno
Sejkora et al. (2019)
France
 
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Bellac
        • Razès
          • Chanteloube
            • Vilatte Quarries (La Vilate)
Meisser (2010)
        • Vaulry
Queneau (n.d.)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
no description given yet] +1 other reference
          • Agios Konstantinos (Kamariza)
            • Mercati mines
Rieck et al. (2018)
          • Km 3
            • Kaminiza mines
Rieck et al. (2018)
Italy
 
  • Sardinia
    • South Sardinia Province
      • Gonnosfanadiga
        • Fenugu Sibiri Mine
Kolitsch et al. (2010) +1 other reference
Japan
 
  • Oita Prefecture
    • Saiki City
Satoshi Matsubara et al. (2009)
OHNISHI et al. (2013)
Morocco
 
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
          • Oumlil
Kolitsch et al. (2010)
Namibia
 
  • Oshikoto Region
    • Tsumeb
Veldsman et al. (04/21) +1 other reference
Portugal (TL)
 
  • Guarda
    • Sabugal
      • Bendada
Kolitsch et al. (2010)
Spain
 
  • Galicia
    • Pontevedra
      • O Rosal
        • San Miguel de Tabagón
Calvo Rebollar (2015)
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