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About BobierriteHide

Mg3(PO4)2 · 8H2O
Colorless to gray-white; colorless in transmitted light.
Sub-Vitreous, Pearly
2 - 2½
Specific Gravity:
Crystal System:
Named by James Dwight Dana in 1868 in honor of French agricultural chemist Pierre Adolphe Bobierre (May 7, 1823 Paris, France - September 18, 1881 Nantes, France), who first described the mineral.
Dimorph of:
Closely related to the Vivianite Group.

Classification of BobierriteHide

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

C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5

3 : A3(XO4)2·xH2O

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of BobierriteHide

Sub-Vitreous, Pearly
Pearly cleavages
Colorless to gray-white; colorless in transmitted light.
2 - 2½ on Mohs scale
On {010}, perfect.
2.195 g/cm3 (Measured)    2.17 g/cm3 (Calculated)
Measured density value is on artificial material.

Optical Data of BobierriteHide

Biaxial (+)
RI values:
nα = 1.510 - 1.547 nβ = 1.520 - 1.553 nγ = 1.543 - 1.582
Measured: 53° to 71°, Calculated: 52° to 73°
Max Birefringence:
δ = 0.033 - 0.035
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Optical Extinction:
Y=b, Z^c = 27°-29°

Chemical Properties of BobierriteHide

Mg3(PO4)2 · 8H2O

Crystallography of BobierriteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 4.667 Å, b = 27.926 Å, c = 10.067 Å
β = 105.01°
a:b:c = 0.167 : 1 : 0.36
Unit Cell V:
1,267.27 ų (Calculated from Unit Cell)
Crystals acicular or fibrous, minute, elongated [001] and flattened {010}. Also forms rosette-like flattened aggregates; lamellar; crystalline agglomerations; masive.
Takagi, S., Mathew, M., and Brown, W. E., 1986, Crystal Structures of Bobierrite and Synthetic Mg3(PO4)2.8H2O, American Mineralogist, 71: 1229-1233.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001048BobierriteTakagi S, Mathew M, Brown W E (1986) Crystal structures of bobierrite and synthetic Mg3(PO4)2(H2O)8 American Mineralogist 71 1229-123319860293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
9.96 Å(100)
8.04 Å(18)
3.02 Å(10)
2.94 Å(27)
2.81 Å(13)
2.41 Å(12)
2.13 Å(10)

Geological EnvironmentHide

Geological Setting:
Guano deposits.
Phosphatic fossils.
Late stage phosphate mineralization in granite pegmatite.

Type Occurrence of BobierriteHide

Geological Setting of Type Material:
Guano deposit.
Associated Minerals at Type Locality:

Synonyms of BobierriteHide

Other Language Names for BobierriteHide

Relationship of Bobierrite to other SpeciesHide

Chemically related to group(s):
Vivianite GroupM3(XO4)2 · 8H2O

Common AssociatesHide

CollinsiteCa2Mg(PO4)2 · 2H2O
Associated Minerals Based on Photo Data:
7 photos of Bobierrite associated with CollinsiteCa2Mg(PO4)2 · 2H2O
5 photos of Bobierrite associated with KovdorskiteMg2(PO4)(OH) · 3H2O
2 photos of Bobierrite associated with ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2O
1 photo of Bobierrite associated with KaliciniteKHCO3
1 photo of Bobierrite associated with MetatorberniteCu(UO2)2(PO4)2 · 8H2O
1 photo of Bobierrite associated with QuartzSiO2

Related Minerals - Nickel-Strunz GroupingHide

8.CE.XBabánekiteCu3(AsO4)2 · 8H2O Mon. 2/m : B2/m
8.CE.05Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.05GeigeriteMn2+5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.10NewberyiteMg(PO3OH) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.15BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.20PhosphorrössleriteMg(PO3OH) · 7H2OMon. 2/m : P2/b
8.CE.20RößleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
8.CE.25MetaswitzeriteMn2+3(PO4)2 · 4H2OMon. 2/m : P2/b
8.CE.25SwitzeriteMn2+3(PO4)2 · 7H2OMon.
8.CE.30LindackeriteCuCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30OndrušiteCaCu4(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.30VeselovskýiteZnCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30PradetiteCoCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30KlajiteMnCu4(AsO4)2(HAsO4)2 · 9-10H2OTric. 1 : P1
8.CE.40AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ArupiteNi3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40FerrisymplesiteFe3+3(AsO4)2(OH)3 · 5H2O
8.CE.40HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ManganohörnesiteMn2+3(AsO4)2 · 8H2OMon. 2/m : P2/m
8.CE.40ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40PakhomovskyiteCo3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.45SymplesiteFe2+3(AsO4)2 · 8H2OTric. 1 : P1
8.CE.50CattiiteMg3(PO4)2 · 22H2OTric. 1 : P1
8.CE.55KoninckiteFe3+PO4 · 3H2OTet.
8.CE.60KaňkiteFeAsO4 · 3.5H2OMon. 2 : P2
8.CE.65SteigeriteAl(VO4) · 3H2OMon. 2/m : P21/m
8.CE.70MetaschoderiteAl2(PO4)(VO4) · 6H2OMon. 2/m : P2/m
8.CE.70SchoderiteAl2(PO4)(VO4) · 8H2OMon.
8.CE.75MalhmooditeFeZr(PO4)2 · 4H2OMon.
8.CE.75ZigrasiteMgZr(PO4)2 · 4H2OTric. 1 : P1
8.CE.75UM2009-11-PO:CaHZrCaZr[PO4]2 · 4H2OTric.
8.CE.80SantabarbaraiteFe3+3(PO4)2(OH)3 · 5H2OAmor.
8.CE.85Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)HideörnesiteMn2+3(AsO4)2 · 8H2OMon. 2/m : P2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.4HydroxylherderiteCaBe(PO4)(OH)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(PO3OH)2 · 4H2OMon.
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
19.3.12RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(PO3OH) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(PO3OH) · 7H2OMon. 2/m : P2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1

Fluorescence of BobierriteHide

Not fluorescent.

Other InformationHide

Readily soluble in 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.

References for BobierriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bobierre (1868) Les Mondes, April 1868: 691 (as Phosphate de Magnésie tribasique et Hydraté).
Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York: 795.
Lacroix (1888) Comptes rendus de l’Académie des sciences de Paris: 106: 631.
de Schulten (1903) Bulletin de la Société française de Minéralogie: 26: 81.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 49.
Barth (1937) American Mineralogist: 22: 325.
Hutton (1941) New Zealand Journal of Scientific Technology, Section B: 23: 9.
Gruner and Stauffer (1943) American Mineralogist: 28: 339.
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.: 753-754.
Takagi, S., Mathew, M., and Brown, W. E., 1986, Crystal Structures of Bobierrite and Synthetic Mg3(PO4)2.8H2O, American Mineralogist, 71: 1229-1233.

Internet Links for BobierriteHide

Localities for BobierriteHide

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.
  • Western Australia
Handbook of Mineralogy
    • Port Hedland Shire
      • Abydos Station
        • Wodgina
Mason, B. & Dunn, P.J. (1974) An unusual occurrence of Bobierrite at Wodgina, Western Australia. Mineralogical Record 5 (6) 265.
  • Yukon
    • Dawson mining district
[Mineralogical Record Vol 23 No.4 pp 36]
Robinson, G.W., Van Velthuizen, J., Ansell, H.G. & Sturman, B.D. (1992): Mineralogy of the Rapid Creek and Big Fish River area, Yukon Territory. Mineralogical Record 23, 1-47.
Chile (TL)
  • Antofagasta
    • Antofagasta Province
      • Mejillones
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: 754.; Atencio, D., Chukanov, N. V., Nestola, F., Witzke, T., Coutinho, J. M., Zadov, A. E., ... & Färber, G. (2012). Mejillonesite, a new acid sodium, magnesium phosphate mineral, from Mejillones, Antofagasta, Chile. American Mineralogist, 97(1), 19-25.
  • Inner Mongolia
    • Ordos City (E'erduosi Prefecture)
      • Jungar Banner (Zhunge'er Co.)
        • Jungar coal field (Zhunge'er coal field)
Yuan, Y., Li, Y., & Fan, J. (2015). Mineralogical and geochemical characteristics of the No. 6 coal in the Tanggongta Mine, Inner Mongolia, China. World Journal of Engineering, 12(6), 551-562.
  • Makueni County
    • Chyulu Hills
Handbook of Mineralogy
New Zealand
Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
  • Telemark
    • Bamble
Michel, L.(1893): Sur une nouvelle espèce minéral de Bamle (Norvegé). Bulletin de la Société française de Minéralogie. 16, 38-40. Barth, T.F.W (1937): Crystallographic studies in the vivianite group. American Mineralogist, 22, 235-341 (p.337-338)
  • 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
  • Guarda
    • Gouveia
      • Folgosinho
-Idoia Garate-Olabe,Encarnacion Roda-Robles,Pedro-Pablo Gil-Crespo, Alfonso Pesquera-Pérez,Romeu Vieira, Alexandra Lima,Estudio Textural y Mineralogico del Dique de Cuarzo con Fosfatos de Folgosinho (Guarda, Portugal) Macle N°16 junio 2012 revista de la sociedad espanola de mineralogia
    • Sabugal
      • Bendada
Schnorrer-Köhler (1991), Mineral Occurrences.
  • Bihor
    • Pietroasa
Onac, B. P., Bengeanu, M., Botez, M., & Zih, J. (1995). Preliminary report on the mineralogy of Pestera din Valea Rea (Bihor Mountains, Romania). Theoretical and Applied Karstology, 8, 75.
  • Crimea
Chukanov, N. V. (2005).
      • Novoselovka Village area
Shnykov E.F. at al.(1971) Mud Volcanism and Ore Formation (Gryazevoi Vulkanizm i Rudoobrazovanie). Kiev:Naukova Dumka. 332 p. (Rus.)
  • Murmansk Oblast
Subbotin, R. P. L. V. V., & Pakhomovsky, Y. A. (1998). A new type of scandium mineralization in phoscorites and carbonatites of the Kovdor massif, Russia. Canadian Mineralogist 36:971-980.
[World of Stones 95:5-6, p64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Yakovenchuk V N, Ivanyuk G Y, Mikhailova Y A, Selivanova E A, Krivovichev S V (2006) Pakhomovskyite, Co3(PO4)2·8H2O, a new mineral species from Kovdor, Kola Peninsula, Russia, The Canadian Mineralogist 44, 117-123
Mikhailova, J. A., Kalashnikov, A. O., Sokharev, V. A., Pakhomovsky, Y. A., Konopleva, N. G., Yakovenchuk, V. N., ... & Ivanyuk, G. Y. (2016). 3D mineralogical mapping of the Kovdor phoscorite–carbonatite complex (Russia). Mineralium Deposita, 51(1), 131-149.
  • Zabaykalsky Krai
    • Krasnyi Chikoy
      • Malkhan pegmatite field (Malchan; "Malechansk")
[Lapis 1993:1 p13-15]
  • Minnesota
    • Pipestone Co.
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: 754.; Gruner, J. W., & Stauffer, C. R. (1943). A unique occurrence of bobierrite, Mg3 (PO4) 2.8 H20. American Mineralogist, 28, 339-340.
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