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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.

X-Ray Powder DiffractionHide

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

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:
Collinsite7 photos of Bobierrite associated with Collinsite on mindat.org.
Kovdorskite5 photos of Bobierrite associated with Kovdorskite on mindat.org.
Arthurite2 photos of Bobierrite associated with Arthurite on mindat.org.
Kalicinite1 photo of Bobierrite associated with Kalicinite on mindat.org.
Metatorbernite1 photo of Bobierrite associated with Metatorbernite on mindat.org.
Quartz1 photo of Bobierrite associated with Quartz on mindat.org.

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(HPO4) · 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(HPO4) · 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.40Manganohörnesite(Mn,Mg)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.75Unnamed (Ca-analogue of Zigrasite)CaZr[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.)Hideörnesite(Mn,Mg)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,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)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(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 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.
http://www.handbookofmineralogy.com/pdfs/mejillonesite.pdf; 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 League (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 Co.
      • Radlin
Ł. Kruszewski PXRD data (to be published soon)
  • 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
    • Chitinskaya Oblast
      • 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.
Mineral and/or Locality  
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