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NaFe3+3(PO4)2(OH)4 · 2H2O
Bright yellow, honey-yellow, orange to brownish yellow, brown
Specific Gravity:
3.081 - 3.096
Crystal System:
Member of:
For the type location
Isostructural with:
Wardite Group.
The Fe analogue of wardite.

Classification of Cyrilovite

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

D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1

7 : (AB)2(XO4)Zq·xH2O

19 : Phosphates
14 : Phosphates of Fe and other metals

Physical Properties of Cyrilovite

Bright yellow, honey-yellow, orange to brownish yellow, brown
3.081 - 3.096 g/cm3 (Measured)    3.114 g/cm3 (Calculated)

Optical Data of Cyrilovite

Uniaxial (-)
RI values:
nω = 1.802 - 1.805 nε = 1.769 - 1.775
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
O= deep yellow to yellow
E= colorless to yellow

Chemical Properties of Cyrilovite

NaFe3+3(PO4)2(OH)4 · 2H2O

Crystallography of Cyrilovite

Crystal System:
Class (H-M):
4 2 2 - Trapezohedral
Space Group:
P41 21 2
Cell Parameters:
a = 7.313(2) Å, c = 19.315(3) Å
a:c = 1 : 2.641
Unit Cell V:
1,032.97 ų (Calculated from Unit Cell)
Thick tabular crystals, also pyramidal, pseudo-octahedral, radiating botryoidal aggregates or crusts.

X-Ray Powder Diffraction

Powder Diffraction Data:
4.77 (50)
4.74 (100)
3.12 (60)
3.09 (80)
3.00 (80)
2.83 (40)
2.59 (80)
2.11 (40)

Type Occurrence of Cyrilovite

Synonyms of Cyrilovite

Other Language Names for Cyrilovite

Relationship of Cyrilovite to other Species

Member of:
Other Members of this group:
Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2O
WarditeNaAl3(PO4)2(OH)4 · 2H2O

Common Associates

Associated Minerals Based on Photo Data:
Dufrénite27 photos of Cyrilovite associated with Dufrénite on
Chalcosiderite24 photos of Cyrilovite associated with Chalcosiderite on
Leucophosphite22 photos of Cyrilovite associated with Leucophosphite on
Rockbridgeite9 photos of Cyrilovite associated with Rockbridgeite on
Natrodufrénite7 photos of Cyrilovite associated with Natrodufrénite on
Quartz6 photos of Cyrilovite associated with Quartz on
Torbernite6 photos of Cyrilovite associated with Torbernite on
Strengite5 photos of Cyrilovite associated with Strengite on
Apatite4 photos of Cyrilovite associated with Apatite on
Goethite4 photos of Cyrilovite associated with Goethite on

Related Minerals - Nickel-Strunz Grouping

8.DL.05FoggiteCaAl(PO4)(OH)2 · H2O
8.DL.10Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2O
8.DL.10WarditeNaAl3(PO4)2(OH)4 · 2H2O
8.DL.15Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2O
8.DL.15Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2O
8.DL.15Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2O
8.DL.15Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2O
8.DL.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2O
8.DL.15MixiteBiCu6(AsO4)3(OH)6 · 3H2O
8.DL.15Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2O
8.DL.15ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O
8.DL.15Plumboagardite(Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2O
8.DL.15CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2O
8.DL.20WallkilldelliteCa2Mn2+3(AsO4)2(OH)4 · 9H2O
8.DL.20Wallkilldellite-(Fe)(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O
8.DL.25AngastoniteCaMgAl2(PO4)2(OH)4 · 7H2O

Related Minerals - Hey's Chemical Index of Minerals Grouping

19.14.2KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
19.14.6NatrodufréniteNaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
19.14.7LeucophosphiteKFe3+2(PO4)2(OH) · 2H2O
19.14.8Spheniscidite(NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O
19.14.9BurangaiteNaFe2+Al5(PO4)4(OH)6 · 2H2O
19.14.11UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2O
19.14.12Garyansellite(Mg,Fe)3(PO4)2(OH,O) · 1.5H2O
19.14.14AnapaiteCa2Fe2+(PO4)2 · 4H2O
19.14.15XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2O
19.14.16CalcioferriteCa2Fe3+2(PO4)3(OH) · 7H2O
19.14.17MitridatiteCa2Fe3+3(PO4)3O2 · 3H2O
19.14.19DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
19.14.20CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2O
19.14.21SegeleriteCa2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O
19.14.22KingsmountiteCa4(Fe2+,Mn2+)Al4(PO4)6(OH)4 · 12H2O
19.14.23VauxiteFe2+Al2(PO4)2(OH)2 · 6H2O
19.14.24MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
19.14.25ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
19.14.26SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
19.14.27CacoxeniteFe3+24Al(PO4)17O6(OH)12 · 17H2O
19.14.28KoninckiteFe3+PO4 · 3H2O
19.14.31Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
19.14.32Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O

Related Minerals - Dana Grouping (8th Ed.) · 2H2O

Other Information

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 Cyrilovite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lindberg, M.L. (1957) Relationship of the minerals avelinoite, cyrilovite, and wardite. American Mineralogist: 42: 204–213.
American Mineralogist (1957): 42: 586. (avelinoite = cyrilovite).
Cozzupoli, D., O. Grubessi, A. Mottana, and P.F. Zanazzi (1987): Cyrilovite from Italy; structure and crystal chemistry. Mineral. Petrol., 37, 1–14.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.: 134.

Internet Links for Cyrilovite URL:
Please feel free to link to this page.

Localities for Cyrilovite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Córdoba
    • Punilla Department
Colombo, F. & Lira, Y.F. (2006): Cyrilovita y eosforita en la pegmatitita granítica “Gigante”, Córdoba, Argentina. Congreso; VIII Congreso de Mineralogía y Metalogenia 2006; Kampf, A.R., F. Colombo, W.B. Simmons Jr., A. Falster, J.W. Nizamoff (2010): Galliskiite, Ca4Al2(PO4)2F8 x 5H2O, a new mineral from the Gigante granitic pegmatite, Cordoba province, Argentina. American Mineralogist. 95, 392-96
  • New South Wales
    • Kennedy Co.
      • Goonumbla
A.L. McLean, J.Chapman, J.L. Sharpe and P.A. Williams (2004): The mineralogy of the oxidised zone of the E26 orebody at Northparkes, New South Wales. Australian Journal of Mineralogy 10, 53-57.
    • Yancowinna Co.
      • Broken Hill
        • Broken Hill South Mine (BHS Mine; South Mine)
Australian Mineralogist (1997): 3: 1.
  • South Australia
    • Eyre peninsula
      • Middleback Range
        • Iron Duke Complex
Francis, G.L., 2010. Minerals from the South Middleback Range deposits 2003-2008. (self published) 44pp.
Francis, G.L., 2010. Minerals from the South Middleback Range deposits 2003-2008. (self published) 44pp.
        • Iron Knob
Pilkington, E. S., Segnit, E. R., Watts, J. and Francis, G. (1979): Kleemanite, a new zinc aluminium phosphate. Mineralogical Magazine 43, 93-95.
    • Mt Lofty Ranges
      • North Mt Lofty Ranges
        • Barossa Valley
          • Angaston
Segnit, E. R., Watts, J. A. & Peisley, V. (1981): Mineralogy of the rock phosphate deposit at Moculta, South Australia. Austral. Mineral. 1 (35), 179-186.; Harrowfield, I. R., Segnit, E. R., & Watts, J. A. (1981). Aldermanite, a new magnesium aluminium phosphate. Mineralogical Magazine, 44(333), 59-62.
        • Kapunda
Frost, R.L., S.J. Mills, and K.L. Erickson, (2004), Thermal decomposition of peisleyite: a thermogravimetry and hot stage Raman spectroscopic study. Thermochimica Acta, 419(1-2): p. 109-114.
        • Robertstown
Handbook of Mineralogy
        • Truro
Francis, G.L., Peisley, V., 2012. Minerals from Penrice quarry and the phosphate deposits Klemms and St Kitts, Angaston, South Australia. (self published).
    • Olary Province
      • Boolcoomatta Reserve (Boolcoomata Station; Boolcoomatta)
Lottermoser, B.G., and Lu, J. (1997): Mineralogy and Petrology 59, 1-19.
  • Victoria
    • Buloke Shire
      • Wycheproof
W.D.Birch. Phosphate Minerals of Victoria. The Mineralogical Society of Victoria special publication No. 3 pp. 28-32
    • City of Greater Shepparton
      • Dookie
        • Ascot Hills
Jo Price Collection
    • Mount Alexander Shire
      • Castlemaine
        • Campbells Creek
P. Sutton (2007): Cyrilovite and natrodufrenite from near Campbells Creek, Victoria. Australian Journal of Mineralogy, 13(2), 65-71.
    • Swan Hill Rural City
      • Lake Boga
W.D. Birch & D.A.Henry 1993. Phosphate Minerals of Victoria, The Mineralogical Society of Victoria special publication No. 3, pp. 14-27; D.A.Henry & W.D.Birch 1998. Sampleite and associated minerals from Lake Boga granite quarry, Victoria, Australia. Australian Mineralogist Vol. 3 Oct.-Dec. 1988, pp. 135-148
  • Western Australia
    • Meekatharra Shire
      • Milgun Station
Peter Downes, WA Museum
  • Carinthia
    • Millstatt lake ridge
      • Spittal
        • Wolfsberg
Walter F. & Ettinger, K. (2004): 1359) Cyrilovit vom Pegmatit-Steinbruch am Wolfsberg bei Spittal a.d. Drau. Kärnten. Pp. 227-228 in Niedermayr, G. et al. (2004): Neue Mineralfunde aus Österreich LIII. Carinthia II, 194./114.: 217-257.
  • Minas Gerais
    • Conselheiro Pena
Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
sergio varvello
luigi chiappino specimen
Chukanov, N.V., Scholz, R., Zubkova, N.V., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lagoeiro, L., Graça, L.M., Krambrock, K., de Oliveira, L.C.A., Menezes Filho, L.A.D., Sa Carneiro Chaves, M.L., Pushcharovsky, D.Y. (2014): Correianevesite, Fe2+Mn2+2(PO4)2·3H2O, a new reddingite-group mineral from the Cigana mine, Conselheiro Pena, Minas Gerais, Brazil. American Mineralogist, 99, 811-816
    • Divino das Laranjeiras
      • Linópolis
European Journal of Mineralogy 22,459(2010)
    • Galiléia
      • Laranjeiras
[MinRec 12:69]
      • Sapucaia do Norte
AmMin 89:1087
Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
  • Paraíba
    • Borborema mineral province
      • Frei Martinho
[MinRec 22:183]
      • Pedra Lavrada
Sergio Varvello collection
Czech Republic (TL)
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Velké Meziříčí
Acta Acad.Sci.Nat. Moravo-Silesiae (1953) 25, 325-336
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
Uwe Kolitsch (SXRD-analysis of Gert Schöneborn and Heinz Förch samples)
Le Règne Minéral, (33), 5-25.
    • Puy-de-Dôme
      • Puy-Guillaume
        • Lachaux
Patrice Queneau Collection
  • Nouvelle-Aquitaine
    • Deux-Sèvres
      • Le Temple
Le Cahier des micromonteurs, 2002, N°75, pp 8-25
    • Haute-Vienne
      • Saint-Yrieix-la-Perche
Patrice Queneau Collection
  • Occitanie
    • Aveyron
      • La Capelle-Bleys
Gayraud, L., Gineste, C., Bernadi, G. & Johannet, J.-M. (2011) - Bleys et Puech de Compolibat: deux localités minéralogiques remarquables du massif de leucogranite de La Capelle-Bleys (Aveyron), Le Cahier des Micromonteurs, 111(1), 7-23
  • Bavaria
    • Franconia
      • Fichtelgebirge
        • Sparneck
          • Reinersreuth
            • Großer Waldstein
Wittern: "Mineralfundorte in Deutschland", 2001
        • Tröstau
          • Leupoldsdorf
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Upper Palatinate
      • Waidhaus
        • Hagendorf
  • Hesse
    • Taunus
      • Bad Camberg
        • Eisenbach
Lapis 33 (7-8) 77 (2008) [in German abs. of original description of pattersonite]
  • Saxony
    • Oberlausitz
      • Görlitz
        • Rengersdorf
T. Witzke & T. Giesler (1997): Neufunde aus Sachsen (VI): Churchit-(Y), Cyrilovit, Faustit, Kidwellit, Meurigit und Nickelhexahydrit aus der Lausitz.- Lapis 22, 9, 36-38
  • Sardinia
    • Oristano Province
      • Bosa
Conti-Vecchi G. & Stara P. (1991) Minerali della Sardegna, Edition Della Torre, Cagliari, 276 p
  • Fianarantsoa Province
    • Amoron'i Mania Region
      • Ampandramaika-Malakialina Pegmatite Field
        • Ambatofinandrahana District
Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p.32
  • Erongo Region
    • Karibib District
      • Tsaobismund Farm 85
Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 513 pp (in English).
      • Usakos
Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 409 (in English).
Keller, P. (1974): Phosphatmineralien aus Pegmatiten Sudwestafrikas, Der Aufschluss 25,577-591(1974)
  • Karas Region
    • Karasburg District
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 384 pp. (in English)
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 384 pp. (in English)
  • Guarda District
    • Sabugal
      • Bendada
Schnorrer-Köhler (1991), Mineral Occurrences.
Pedro Alves collection
  • Viseu District
    • Mangualde
    • Vouzela
      • Carvalhal de Vermilhas
      • Queirã
Pedro Alves analytical data and collection.
  • Southern Province
    • Gitarama – Kibuye Road
Canadian Mineralogist 42:697-704 (2004)
  • Extremadura
    • Cáceres
      • Zarza la Mayor
Viñals, J. and Calvo, M. (2011). Secondary phosphates of La Paloma mine, Zarza la Mayor, Cáceres, Spain. Mineral Up 2 (5), 8-31.
  • England
    • Cornwall
      • St Austell District
        • Treverbyn
          • Stenalees
Mineralogical Magazine 1996 60 : 517-518.
  • Florida
    • Polk Co.
      • Central Florida Phosphate District (Bone Valley)
        • Homeland
Denicourt, R., Micromounters of New England program, NE meeting program, May 1984; Marc V. Hurst (2012) Central Florida Phosphate District. Southeastern Geological Society Field Trip Guidebook No. 57
  • Nevada
    • Humboldt Co.
      • Buffalo Mountain District
NBMG Spec. Pub. 31 Minerals of Nevada
      • Iron Point District
        • Valmy
NBMG Spec. Pub. 31 Minerals of Nevada
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Rocks and Minerals, (1985) 60:76-82
  • South Dakota
    • Custer Co.
      • Custer District
        • Fourmile
Rocks & Minerals: 75(3): 156-169.
  • Kyzylkum Desert
    • Kokpatas village
Mineraly Uzbekistana(Minerals of the Uzbekistan) - izd."FAN" UzbSSR-vol.1-4 - 1976-1977
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