Phosphohedyphane Mineral Data

General Phosphohedyphane Information

Chemical Formula:

Ca2Pb3(PO4)3Cl

Composition:

Molecular Weight = 1,068.23 gm

Calcium 6.57 % Ca 9.19 % CaO

Arsenic 1.68 % As 2.58 % As₂O₅

Phosphorus 8.00 % P 18.34 % P₂O₅

Lead 62.46 % Pb 64.87 % Pb₂O

Chlorine 3.32 % Cl 3.32 % Cl

- % Cl -0.75 % -O=Cl₂

Oxygen 17.97 % O

______ ______

100.00 % 97.54 % = TOTAL OXIDE

Empirical Formula:

Ca_1.75Pb_3.223(PO₄)_0.923(AsO₄)_0.08Cl

Environment:

Occurs on specimens collected from the dumps of the southern workings of the Capitana mine. Apatite group

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Capitana mine, Copiapo, Atacama Province, Chile Link to MinDat.org Location Data.

Name Origin:

Named as the phosphate analog of hedyphane.

Synonym:

IMA2005-026

Nussierite

Polysphaerite

Phosphohedyphane Image

Images:

Phosphohedyphane

Comments: Clear, prismatic phosphohedyphane crystal on matrix.
Location: Argentena mine, Goodsprings, Clark Co., Nevada, USA. Scale: Crystal size 0.5mm.
© Tom Loomis / Dakota Matrix

Phosphohedyphane Crystallography

Axial Ratios:

a:c = 1:0.72334

Cell Dimensions:

a = 9.857, c = 7.13, Z = 2; V = 599.94 Den(Calc)= 5.91

Crystal System:

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

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

By Intensity(I/I_o): 2.942(1), 4.054(0.6), 2.139(0.35),3.565(0.3), 1.89(0.25), 1.918(0.25), 8.538(0.2),

Physical Properties of Phosphohedyphane

Cleavage:

None

Color:

Coloress, Yellow, Yellowish green, Orange, Greenish blue.

Diaphaneity:

Transparent

Fracture:

Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.

Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

4 - Fluorite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Phosphohedyphane

Gladstone-Dale:

CI calc= -1.334 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1576,KC= 0.0675
Ncalc = 1.4

Optical Data:

Uniaxial (-), e=1.928, w=1.935, bire=0.0070.

Calculated Properties of Phosphohedyphane

Electron Density:

Bulk Density (Electron Density)=5.10 gm/cc
note: Specific Gravity of Phosphohedyphane =5.91 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_{Phosphohedyphane}=1,112.84 barns/electron
U=PE_{Phosphohedyphane} x rElectron Density=5,680.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Phosphohedyphane is Not Radioactive

Phosphohedyphane Classification

Dana Class:

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

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

(41.08.01)Apatite Group

41.08.01.00 Apatite* Ca5(PO4)3(OH,F,Cl) P 6₃/m 6/m

41.08.01.01 Apatite-(CaF) Ca5(PO4)3F P 6₃/m 6/m

41.08.01.02 Apatite-(CaCl) Ca5(PO4)3Cl P 6₃/m 6/m

41.08.01.03 Apatite-(CaOH) Ca5(PO4)3(OH) P 6₃/m 6/m

41.08.01.04 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 6₃/m 6/m

41.08.01.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

41.08.01.06 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

41.08.01.06a Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

41.08.01.06b Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

41.08.01.07 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

41.08.01.08 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

41.08.01.09 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3

41.08.01.10 IMA2008-009! Sr5(PO4)3F P 6₃/m 6/m 2/m 2/m

41.08.01.11 IMA2008-068! Ca2Pb3(PO4)3F P 6₃/m 6/m

41.08.01.12 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 6₃/m 6/m

Strunz Class:

08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1

08.BN.05 Alforsite Ba5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite* Ca5(PO4)3(OH,F,Cl) P 6₃/m 6/m

08.BN.05 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3

08.BN.05 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3

08.BN.05 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 6₃/m 6/m

08.BN.05 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3

08.BN.05 Johnbaumite Ca5(AsO4)3(OH) P 6₃/m,P 6₃ Hex

08.BN.05 Apatite-(CaOH) Ca5(PO4)3(OH) P 6₃/m 6/m

08.BN.05 Apatite-(CaCl) Ca5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 6₃/m 6/m

08.BN.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 6₃/m 6/m

08.BN.05 Clinomimetite Pb5(AsO4)3Cl P 2₁/b 2/m

08.BN.05 Apatite-(CaF) Ca5(PO4)3F P 6₃/m 6/m

08.BN.05 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 6₃ 6

08.BN.05 Hedyphane Ca2Pb3(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Mimetite Pb5(AsO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 6₃/m 6/m

08.BN.05 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 6₃/m,P 6₃ Hex

08.BN.05 Pyromorphite Pb5(PO4)3Cl P 6₃/m 6/m

08.BN.05 Vanadinite Pb5(VO4)3Cl P 6₃/m 6/m

08.BN.05 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 2₁/b 2/m

08.BN.05 IMA2008-068! Ca2Pb3(PO4)3F P 6₃/m 6/m

08.BN.05 Svabite Ca5(AsO4)3F P 6₃/m 6/m

08.BN.05 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3

08.BN.05 Turneaureite Ca5[(As,P)O4]3Cl P 6₃/m 6/m

08.BN.05 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 6₃/m 6/m

08.BN.05 IMA2008-009! Sr5(PO4)3F P 6₃/m 6/m 2/m 2/m

08.BN.05 Hydroxylpyromorphite! Pb5(PO4)3OH P 6₃/m 6/m

Other Phosphohedyphane Information

References:

NAME( AmMin, v 91, p 1909) PHYS. PROP.(AmMin, v 91, p 1909) OPTIC PROP.(AmMin, v 91, p 1909)

See Also:

Links to other databases for Phosphohedyphane :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Phosphohedyphane

Ca2Pb3(PO4)3Cl
Dana No: 41.08.01.12 Strunz No: 08.BN.05
Locality:

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