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 - DipyramidalH-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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Kampf A R , Steele I M , Jenkins R A , American Mineralogist , 91 (2006) p.1909-1917, Phosphohedyphane, Ca2Pb3(PO4)3Cl, the phosphate analogue of hedyphane:, Description and crystal structure, Locality: Capitana mine, Copiapo, Atacama Province, Chile

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

Search for Phosphohedyphane using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Phosphohedyphane :

A Bijoux Google Search for Phosphohedyphane
Adam's Minerals Google Search for Phosphohedyphane
Cape Minerals Google Search for Phosphohedyphane
Dakota Matrix Minerals Google Search for Phosphohedyphane
Excalibur Mineral Corp. Google Search for Phosphohedyphane
Exceptional Minerals Google Search for Phosphohedyphane
John Betts Fine Minerals Search for Phosphohedyphane
McDougall Minerals Google Search for Phosphohedyphane
Mineral News Website Link
Rock and Mineral Shows Google Search for Phosphohedyphane
Weinrich Minerals, Inc. Google Search for Phosphohedyphane

Ask about Phosphohedyphane here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Phosphohedyphane Specimen Label here :

Phosphohedyphane

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

Notes: