Turneaureite Mineral Data

Turneaureite Mineral Data +

General Turneaureite Information

Chemical Formula:

Ca5[(As,P)O4]3Cl

Composition:

Molecular Weight = 630.63 gm

Calcium 31.78 % Ca 44.46 % CaO

Arsenic 29.70 % As 45.56 % As₂O₅

Phosphorus 2.46 % P 5.63 % P₂O₅

Chlorine 5.62 % Cl 5.62 % Cl

- % Cl -1.27 % -O=Cl₂

Oxygen 30.44 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₅(AsO₄)_2.5(PO₄)_0.5Cl

IMA Status:

Approved IMA 1985

Locality:

FRANKLIN Link to MinDat.org Location Data.

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Turneaureite Crystallography

Axial Ratios:

a:c = 1:0.7001

Cell Dimensions:

a = 9.81, c = 6.868, Z = 2; V = 572.40 Den(Calc)= 3.66

Crystal System:

Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 6₃/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.907(1), 2.826(0.9), 3.43(0.6),

Crystal Structure:

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Wardojo T A , Hwu S-J , Acta Crystallographica, Section C , 52 (1996) p.2959-2960, Chlorapatite: Ca5(AsO4)3Cl, Locality: synthetic, Note: anisotropic temperature factors taken from ICSD

Physical Properties of Turneaureite

Cleavage:

None

Color:

Colorless, Gray white.

Density:

3.6

Diaphaniety:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

5 - Apatite

Luminescence:

Fluorescent.

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Turneaureite

Dichroism (e):

colorless.

Dichroism (w):

colorless.

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1923,KPDmeas= 0.1956,KC= 0.1952

Optical Data:

Uniaxial (-), e=1.7, w=1.708, bire=0.0080.

Calculated Properties of Turneaureite

Electron Density:

r_electron=3.46 gm/cc
note: r_Turneaureite=3.60 gm/cc.

Fermion Index

Fermion Index = 0.00057
Boson Index = 0.99943

Photoelectric:

PE_Turneaureite= 24.54 barns/electron
U=PE_Turneaureite x r_electron= 84.90 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Turneaureite is Not Radioactive

Turneaureite Classification

Dana Class:

41.8.3.2 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.8)where (A)5 (XO4)3 Zq

(41.8.3)Dana Group

41.8.3.1 Svabite Ca5(AsO4)3F P 6₃/m 6/m

41.8.3.2 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

41.8.3.3 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

41.8.3.4 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

Strunz Class:

VII/B.39-70 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.39 - Apatite - Pyromorphite group

VII/B.39-10 Fluorapatite Ca5(PO4)3F P 6₃/m 6/m

VII/B.39-20 Chlorapatite Ca5(PO4)3Cl P 6₃/m 6/m

VII/B.39-30 Hydroxylapatite Ca5(PO4)3(OH) P 6₃/m 6/m

VII/B.39-40 Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

VII/B.39-50 Carbonate-fluorapatite Ca5(PO4,CO3)3F P 6₃/m 6/m

VII/B.39-60 Svabite Ca5(AsO4)3F P 6₃/m 6/m

VII/B.39-70 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

VII/B.39-80 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

VII/B.39-90 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

VII/B.39-95 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

VII/B.39-100 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

VII/B.39-110 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

VII/B.39-115 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

VII/B.39-117 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

VII/B.39-120 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

VII/B.39-130 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

VII/B.39-140 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

VII/B.39-150 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

VII/B.39-160 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

VII/B.39-165 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

VII/B.39-170 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

Other Turneaureite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Turneaureite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 - Franklin Minerals(Dunn) 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

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Turneaureite

Ca5[(As,P)O4]3Cl
Dana No: 41.8.3.2 Strunz No: VII/B.39-70
Locality:

Notes: