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Colourless to grayish white
Vitreous, Greasy
Crystal System:
Named in 1985 by Pete J. Dunn, Erich Ulrich Petersen, and Donald Ralph Peacor in honor of Dr. Frederick Stewart Turneaure [June 22, 1899 Madison, Dane County, Wisconsin, USA – August 29, 1986 Ann Arbor, Washtenaw County, Michigan, USA], ore deposits geologist in Bolivia (1930-1947), later Professor of Geology (1947-1994), University of Michigan, Ann Arbor, Michigan, USA.
A member of the Apatite Group of the Apatite Supergroup. The arsenate analogue of Chlorapatite. The Ca5 analogue of Hedyphane. The Cl analogue of Johnbaumite.

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Classification of TurneaureiteHide

Approval Year:

B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1

8 : A5(XO4)3Zq

22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride

Physical Properties of TurneaureiteHide

Vitreous, Greasy
Colourless to grayish white

Optical Data of TurneaureiteHide

Uniaxial (-)
RI values:
nω = 1.708 nε = 1.700
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of TurneaureiteHide


Crystallography of TurneaureiteHide

Crystal System:
Cell Parameters:
a = 9.81 Å, c = 6.86 Å
a:c = 1 : 0.699
Unit Cell V:
571.73 ų (Calculated from Unit Cell)
Prismatic. Forms observed: {1010} and {0001}

Type Occurrence of TurneaureiteHide

Synonyms of TurneaureiteHide

Other Language Names for TurneaureiteHide

Relationship of Turneaureite to other SpeciesHide

Other Members of this group:
AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
MimetitePb5(AsO4)3ClHex. 6/m : P63/m
PieczkaiteMn5(PO4)3ClHex. 6/m : P63/m
PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Unnamed (F-analogue of Pyromorphite)Pb5(PO4)3F
Unnamed (OH-analogue of Mimetite)Pb5(AsO4)3(OH)
VanadinitePb5(VO4)3ClHex. 6/m : P63/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Calcite8 photos of Turneaureite associated with Calcite on
Franklinite3 photos of Turneaureite associated with Franklinite on
Donpeacorite2 photos of Turneaureite associated with Donpeacorite on
Andradite1 photo of Turneaureite associated with Andradite on
Magnetite1 photo of Turneaureite associated with Magnetite on

Related Minerals - Nickel-Strunz GroupingHide

8.BN.05AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
8.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
8.BN.05Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)Hex.
8.BN.05Carbonate-rich HydroxylapatiteCa5(PO4,CO3)3(OH,O)Hex.
8.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
8.BN.05Mimetite-MPb5(AsO4)3ClMon. 2/m : P21/b
8.BN.05Johnbaumite-MCa5(AsO4)3OHMon. 2/m : P21/m
8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
8.BN.05JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
8.BN.05MimetitePb5(AsO4)3ClHex. 6/m : P63/m
8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
8.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.05VanadinitePb5(VO4)3ClHex. 6/m : P63/m
8.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
8.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3
8.BN.05Hydroxylapatite-MCa5(PO4)3OHMon. 2/m : P21/b
8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
8.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
8.BN.10ArctiteNa2Ca4(PO4)3FTrig. 3m (3 2/m) : R3m

Related Minerals - Dana Grouping (8th Ed.)Hide 6/mmm (6/m 2/m 2/m) : P63/mmc 6/m : P63/m 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.2.1SampleiteNaCaCu5(PO4)4Cl · 5H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
22.2.2LavendulanNaCaCu5(AsO4)4Cl · 5H2OMon. 2/m
22.2.3ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
22.2.5ShubnikoviteCa2Cu8(AsO4)6(OH)Cl · 7H2O
22.2.6RichelsdorfiteCa2Cu5Sb(AsO4)4(OH)6Cl · 6H2OMon. 2/m
22.2.7AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
22.2.9PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
22.2.10MimetitePb5(AsO4)3ClHex. 6/m : P63/m
22.2.11Mimetite-MPb5(AsO4)3ClMon. 2/m : P21/b
22.2.14VanadinitePb5(VO4)3ClHex. 6/m : P63/m
22.2.16LeningraditePbCu3(VO4)2ClOrth. mmm (2/m 2/m 2/m) : Ibam
22.2.17HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
22.2.18NealitePb4Fe2+(As3+O3)2Cl4 · 2H2OTric. 1 : P1

Fluorescence of TurneaureiteHide

Fluoresces bright orange under SW UV

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 TurneaureiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn, P.J., Petersen, E. U., Peacor D. R. (1985) Turneaureite, a new member of the apatite group from Franklin, New Jersey, Balmat, New York and Långban, Sweden, The Canadian Mineralogist, 23: 251-254
American Mineralogist (1986): 71: 1280.
Cristian Biagioni, Ferdinando Bosi, Ulf Hålenius, Marco Pasero (2017): The crystal structure of turneaureite, Ca5(AsO4)3Cl, the arsenate analog of chlorapatite, and its relationships with the arsenate apatites johnbaumite and svabite. American Mineralogist, 102, 1981-1986.

Internet Links for TurneaureiteHide

Localities for TurneaureiteHide

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.
  • Caraş-Severin Co.
    • Banat Mts
      • Ocna de Fier-Dognecea District
Ciobanu, C.L., and Cook, N.J. (2004): Skarn textures and a case study:the Ocna de Fier-Dognecea orefield, Banat, Romania. - Ore Geology Reviews 24, 315-370.
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Buriatia Republic (Buryatia)
        • Vitim Plateau
P.M. Kartashov data; American Mineralogist, Volume 87, pages 1509–1513, 2002; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Dalarna
    • Hedemora
      • Garpenberg
Kjell Gatedal
  • Värmland
    • Filipstad
Dunn, P.J., Petersen, E. U., Peacor D. R. (1985) Turneaureite, a new member of the apatite group from Franklin, New Jersey, Balmat, New York and Långban, Sweden, The Canadian Mineralogist, 23: 251-254
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Dunn, P.J., et al: Canadian Mineralogist:23:251-254 (1985); Dunn(1995):Pt5:653.
  • New York
    • St. Lawrence Co.
      • Balmat-Edwards Zinc District
        • Balmat
Dunn, P.J., et al (1985) Canadian Mineralogist: 23: 251-254.
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