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About MansfielditeHide

George R. Mansfield
AlAsO4 · 2H2O
White, light gray; colourless in transmitted light.
3½ - 4
Specific Gravity:
Crystal System:
Member of:
After George R. Mansfield (1875-1947 ), American geologist, U.S. Geological Survey.
Mansfieldite-Scorodite Series. The aluminium analogue of Scorodite.

Classification of MansfielditeHide

Approved, 'Grandfathered' (first described prior to 1959)

C : Phosphates without additional anions, with H2O
D : With only medium-sized cations, RO4:H2O = 1:2

4 : (AB)5(XO4)2·xH2O

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)

Pronounciation of MansfielditeHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MansfielditeHide

White, light gray; colourless in transmitted light.
3½ - 4 on Mohs scale
On {201}, imperfect; on {001} and {100} in traces.
3.03 g/cm3 (Measured)    
Measured value on Hobart Butte material.

Optical Data of MansfielditeHide

Biaxial (+)
RI values:
nα = 1.622 - 1.631 nβ = 1.624 - 1.649 nγ = 1.642 - 1.663
Measured: 30° to 68°, Calculated: 38° to 82°
Max Birefringence:
δ = 0.020 - 0.032
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of MansfielditeHide

AlAsO4 · 2H2O
IMA Formula:
Al(AsO4) · 2H2O

Crystallography of MansfielditeHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 8.8218 Å, b = 9.8252 Å, c = 10.1163 Å
a:b:c = 0.898 : 1 : 1.03
Unit Cell V:
876.8 ų
Porous, cellular masses and crusts of spherulitic fibers.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010322MansfielditeHarrison W T A (2000) Synthetic mansfieldite, AlAsO4*2H2O Acta Crystallographica C56 e421-e4212000synthetic0293
0010489MansfielditeZoppi M, Pratesi G (2009) Rietveld refinment of a natural cobaltian mansfieldite from synchrotron data Acta Crystallographica E65 i6-i72009Mt. Cobalt, Cloncurry District, Queensland, Australia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
5.45 Å(vvs)
4.36 Å(vvs)
3.97 Å(ms)
3.09 Å(vs)
2.98 Å(s)
2.52 Å(s)
1.627 Å(ms)

Type Occurrence of MansfielditeHide

Other Language Names for MansfielditeHide

Simplified Chinese:砷铝石
Traditional Chinese:砷鋁石

Varieties of MansfielditeHide

Cobalt-bearing MansfielditeA cobalt-bearing variety of mansfieldite.
Copper-bearing MansfielditeA copper-bearing variety of Mansfieldite.

Relationship of Mansfieldite to other SpeciesHide

Member of:
Other Members of this group:
ScoroditeFe3+AsO4 · 2H2OOrth. mmm (2/m 2/m 2/m)
StrengiteFePO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
VarisciteAlPO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
YanomamiteInAsO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
18 photos of Mansfieldite associated with ErythriteCo3(AsO4)2 · 8H2O
13 photos of Mansfieldite associated with SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2O
12 photos of Mansfieldite associated with OliveniteCu2(AsO4)(OH)
8 photos of Mansfieldite associated with LavendulanNaCaCu5(AsO4)4Cl · 5H2O
4 photos of Mansfieldite associated with HeterogeniteCo3+O(OH)
3 photos of Mansfieldite associated with ZeuneriteCu(UO2)2(AsO4)2 · 12H2O
3 photos of Mansfieldite associated with RruffiteCa2Cu(AsO4)2 · 2H2O
2 photos of Mansfieldite associated with PharmacosideriteKFe3+4(AsO4)3(OH)4 · 6-7H2O
2 photos of Mansfieldite associated with BariopharmacoalumiteBa0.5Al4(AsO4)3(OH)4 · 4H2O
2 photos of Mansfieldite associated with CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O

Related Minerals - Nickel-Strunz GroupingHide

8.CD.CastellaroiteMn2+3(AsO4)2 · 4H2OMon. 2/m
8.CD.05KolbeckiteScPO4 · 2H2OMon. 2/m
8.CD.05MetavarisciteAlPO4 · 2H2OMon. 2/m : P21/b
8.CD.05PhosphosideriteFePO4 · 2H2OMon. 2/m
8.CD.10ScoroditeFe3+AsO4 · 2H2OOrth. mmm (2/m 2/m 2/m)
8.CD.10StrengiteFePO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CD.10VarisciteAlPO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CD.10YanomamiteInAsO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CD.15ParascoroditeFeAsO4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
8.CD.20LudlamiteFe2+3(PO4)2 · 4H2OMon. 2/m : P21/b
8.CD.25SterlinghilliteMn2+3(AsO4)2 · 3H2OTric. 1 : P1
8.CD.30RollanditeCu3(AsO4)2 · 4H2OOrth.

Related Minerals - Dana Grouping (8th Ed.)Hide · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca · 2H2OOrth. mmm (2/m 2/m 2/m) · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.4.2BulachiteAl2(AsO4)(OH)3 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
20.4.3PharmacoalumiteKAl4(AsO4)3(OH)4 · 6.5H2OIso. 4 3m : P4 3m
20.4.4LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m : P21/m
20.4.5ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
20.4.6ArsenocrandalliteCaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m)
20.4.7Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
20.4.8Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
20.4.11Gasparite-(Ce)Ce(AsO4)Mon. 2/m
20.4.12Chernovite-(Y)Y(AsO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
20.4.13Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
20.4.14Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
20.4.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
20.4.16Retzian-(Ce)Mn2+2Ce(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
20.4.17Retzian-(La)(Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
20.4.18Retzian-(Nd)Mn2+2(Nd,Ce,La)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MansfielditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Allen, V.T., Fahey, J.J., Axelrod, J.M. (1948): Mansfieldite, a new arsenate, the aluminum analogue of scorodite, and the mansfieldite-scorodite series. American Mineralogist: 33: 122-134.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 763.
Walenta, K. (1963): Mansfieldit von Neubulach im württembergischen Schwarzwald. Neues Jahrbuch für Mineralogie, Monatshefte 1963, 79-87.
Harrison, W. T. A. (2000): Synthetic mansfieldite, AlAsO4•2H2O. Acta Crystallogr. C56, e421.
Zoppi, M. and Pratesi, G. (2009) Rietveld refinement of a natural cobaltian mansfieldite from synchrotron data. Acta Crystallographica, E65, i6–i7.
Kloprogge, T. and Wood, B.J. (2017) X-ray photoelectron spectroscopic and Raman microscopic investigation of the variscite group minerals: Variscite, strengite, scorodite and mansfieldite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 185, 163-172.

Internet Links for MansfielditeHide

Localities for MansfielditeHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Guelma Province
    • Hammam Debagh District
      • Hammam Debagh
Analyzed by XRD by Dr. Joan Vinals (Barcelona)- Col. Agustin Agudo Espinosa
  • Queensland
    • Cloncurry Shire
      • Selwyn District
Zoppi, M., & Pratesi, G. (2009). Rietveld refinement of a natural cobaltian mansfieldite from synchrotron data. Acta Crystallographica Section E: Structure Reports Online, 65(2), i6-i7.; Day, B. (1998) Collecting in the Spinifex. UK Journal of Mines & Minerals, Vol. 19, pg. 24-27. ; Day, B. and Beyer, B., 1995, Some mines of the Mt Isa district, Queensland; the Mt Cobalt mine. Australian Journal of Mineralogy 1(2): 17-23.
  • Western Australia
    • Ashburton Shire
      • Wyloo Station
Ferguson, K.M. (1999) Lead, Zinc and Silver Deposits of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 15.
  • Antofagasta
    • Antofagasta Province
      • Santa Catalina
        • Guanaco (Huanaco)
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
maurizio dini collection; Clissold, M. E. (2007) Aspects of the Supergene Geochemistry of Copper, Nickel and Bismuth. PhD Thesis University of Sydney, Australia 162pp.
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
Vincent Bourgoin Collection
  • Atacama
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
Samples analysed by Dr. Tony Kampf, Curator of LAC Mineralogical Museum, USA; Kampf, A. R., Mills, S. J., Housley, R. M., Rossman, G. R., Nash, B. P., Dini, M., & Jenkins, R. A. (2013). Joteite, Ca2CuAl [AsO4][AsO3 (OH)] 2 (OH) 2· 5H2O, a new arsenate with a sheet structure and unconnected acid arsenate groups. Mineralogical Magazine, 77(6), 2811-2823.
Uwe Kolitsch (powder XRD); T. Djordjević and U. Kolitsch (2008): Conichalcite revisited: Structural and chemical characterisation of a sample from the Maria Catalina mine, Copiapó Province, Chile. Poster, Annual Meeting of the DMG, Berlin, Germany, September 14-17, 2008; CD with abstracts, Abs. no. 331.
    • Huasco Province
      • Freirina
Josef Vajdak (2002) Mineral News, 18, #1, 6.
  • Tarapacá
    • Iquique Province
      • Salar Grande
samples analysed by Anthony Kampf, Curator Emeritus of Mineral Sciences at NHM of LAC, California
  • Sichuan
    • Ngawa Autonomous Prefecture (Aba Autonomous Prefecture)
      • Zoigê Co. (Ruo'ergai Co.)
Czech Republic
  • Karlovy Vary Region
    • Sokolov District
No reference listed
      • Krásno
Sejkora, J., Ondruš, P., Fikar, M., Veselovský, F., Mach, Z., Gabašová, A., Skoda, R. & Beran, P. (2006): Supergene minerals at the Huber stock and Schnöd stock deposits, Krásno ore District, the Slavkovský les area, Czech Republic. Journal of the Czech Geological Society 51, 57-101.
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Bellac
        • Vaulry
          • Vaulry Mines
Patrice Queneau Collection
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
[UKJMM 2:11-15 "Cap Gronne Secondary Copper and Lead - W.R. van den Berg"]
  • Baden-Württemberg
    • Karlsruhe Region
      • Calw
Walenta, K. (1963): Mansfieldit von Neubulach im württembergischen Schwarzwald. N. Jb. Mineral. Mh. 1963, 79-87.; American Mineralogist: 67: 854.
  • Rhineland-Palatinate
    • Neuwied District
      • Puderbach
        • Puderbach
Lapis, 9 (9), 31-38.
  • Saxony
    • Mittelsachsen
      • Sayda
Witzke, T. (2012): Neubestimmungen von Fundstellen in Sachsen: Pyracmonit, Philipsbornit, Mottramit, Mansfieldit, Hydrocerussit und weitere. Aufschluss, 63, 295-300.
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
              • Hilarion Mine
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
  • West Azerbaijan Province
    • Takab County
Daliran, F. (2008): The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran—hydrothermal alteration and mineralisation. Mineralium Deposita, 43, 383-404
  • Sardinia
    • Metropolitan City of Cagliari
      • Sarroch
        • Sa Bidda Beccia
Frau, F., Da Pelo, S., (2001): Bulachite, a rare aluminium arsenate from Sardinia, Italy: the second world occurrence. N.Jb. Miner.Mh., Stutgart, 18 - 26 pp
    • South Sardinia Province
      • Fluminimaggiore
Stara, P., Rizzo, R., and Tanca, G.A. [with contributions of Vinci, A., and Astolfi, M.] (1996) Iglesiente e Arburese. Miniere e Minerali. Associazione Mineralogica Sarda, Associazione Mineralogica Domusnovas, Gruppo Mineralogico Arburese, Gruppo Mineralogico Paleontologico Piacentino, Gruppo Mineralogico Lombardo et al. Ed., Siena, Vol. 2, 192 pp.
      • Gonnosfanadiga
        • Fenugu Sibiri Mine
Brizzi, G., Olmi, F., Sabelli, C. (1994): Gli arseniati di Pira Inferida, Gonnofanadiga (CA). Rivista Mineralogica Italiana, 17, 3 (3-1994), 193-206.
Stara, P., Rizzo, R., Tanca, G.A. (1996): Iglesiente e Arburese. Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", Volume 2°, 239 pp.
      • Villaputzu
Ciriotti M.E. and Blass.G. (2010) - Pot-pourri 2009: identificazioni UKiS AMI. Minerali italiani di interesse.. Micro (UK report), pagg. 124-127
  • Almaty Region
    • Alakol
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (1990) Handbook of Mineralogy.; Amer.Min.(1963) 48, 210-211
  • Sonora
    • Álamos Municipality
      • San Bernardo
Panczner (1987): 166-364.
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Amerzgane Cercle
        • Ouisselsate Caïdat
          • Méchoui
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    • Zagora Province
      • Agdz Cercle
        • Aghbar
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
        • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
        • Oumlil
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
North Macedonia
  • Kavadarci Municipality
    • Rožden
Alois Lechner collection (analysed by G. Blass 2009, re-analysed by Uwe Kolitsch)
  • Silesian Voivodeship
    • Wodzisław County
      • Radlin
Ł. Kruszewski PXRD data (to be published soon); Kruszewski, Ł., Sierny, W. (2019): Radlin coal fire heap: thiosulfate- and dithionate-bearing alkaline mineralization; Cu, Fe, As, and P mineralization; and second worldwide occurrence of tsaregorodtsevite. Miner. - Spec. Pap.: 49: 54
  • Évora
    • Alandroal
      • Alandroal (Nossa Senhora da Conceição), São Brás dos Matos (Mina do Bugalho) e Juromenha (Nossa Senhora do Loreto)
        • São Brás dos Matos
Pedro Alves collection and analytical data.
  • Sakha Republic (Yakutia)
    • Indigirka River Basin
      • Ust'-Nera
Gamyanin, G.N., Zayakina, N.V., Galenchikova, L.T. (2013): Arangasite, Al2(PO4)(SO4)F·7.5Н2O, a new mineral from Alaskitovoye deposit (Eastern Yakutia, Russia)". Zapiski RMO, 142(5), 21-30.
  • Banská Bystrica Region
    • Banská Bystrica District
      • Ľubietová
Martin Števko, unpublished PXRD and EMPA-WDS confirmed
  • Andalusia
    • Córdoba
      • Belalcázar
        • La Ventosilla farmhouse
Rewitzer, C., Calvo, M. Hochleitner, R., and Utrera, C. (2018). Adamite, austinite, schlegelite, dugganite and other uncommon minerals in the “Cogolla Alta” claim,Belalcázar, Córdoba, Spain. Mineral Up, 5 (2), 50-77.
  • Galicia
    • A Coruña
Castroviejo, R. (1990). Gold ores related to shear zones, West Santa Comba-Fervenza area (Galicia, NW Spain): a mineralogical study. Mineralium Deposita, 25(1), S42-S52.
  • Murcia
    • Lorca
    • Mazarrón
      • Pastrana
Jordi Fabre
  • England
    • Cornwall
      • St Hilary
Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.
  • Nevada
    • Elko Co.
      • Carlin Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Eureka Co.
      • Lynn Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Humboldt Co.
      • Osgood Mountains
        • Potosi Mining District
          • Adam Peak
            • Getchell Mine
Bowell, R. J., & Parshley, J. V. (2005). Control of pit-lake water chemistry by secondary minerals, Summer Camp pit, Getchell mine, Nevada. Chemical Geology, 215(1-4), 373-385.
  • Oregon
    • Lane Co.
      • Black Butte Mining District
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 766.; Am Min (1948) 33:122-134
  • Washington
    • Yakima Co.
      • Bumping Lake Mining District
        • Bumping Lake
Cannon, B. (1975): Minerals of Washington, p.118, 154
Mineral and/or Locality  
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