Chlorapatite Mineral Data

General Chlorapatite Information
Help on Chemical Formula: Chemical Formula: Ca5(PO4)3Cl
Help on Composition: Composition: Molecular Weight = 520.76 gm
   Calcium     38.48 %  Ca   53.84 % CaO
   Phosphorus  17.84 %  P    40.89 % P2O5
   Chlorine     6.81 %  Cl    6.81 % Cl
                 -   %  Cl   -1.54 % -O=Cl2
   Oxygen      36.87 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(PO4)3Cl
Help on Environment: Environment: Calc-silicate rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1860
Help on Locality: Locality: Bob's Lake, Oso Twp., Frontenac County, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the chlorine end-member and from the Greek apatao - "I am misleading."
Help on Synonym: Synonym: Apatite
  ICSD 1706
  PDF 33-271
 

Chlorapatite Image

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Chlorapatite

Comments: Blocky crystals of chlorapatite.
Location: Oyna, Froland, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Chlorapatite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.70598
Help on Cell Dimensions: Cell Dimensions: a = 9.598, c = 6.776, Z = 2; V = 540.59 Den(Calc)= 3.20
Help on Crystal System: Crystal System: Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.779(1), 2.861(0.6), 1.836(0.2),
Help on Forms: Forms:

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Forms: [ 1 1 2] [ 0 1 0] [ 0 0 1]

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Hughes J M , Cameron M , Crowley K D , American Mineralogist , 74 (1989) p.870-876, Structural variations in natural F, OH, and Cl apatites, Locality: Kragero, Norway

View Additional jPOWD Structure files for Chlorapatite
[1] [2] [3] [4] [5]
 

Physical Properties of Chlorapatite

Help on Cleavage: Cleavage: [0001] Indistinct
Help on Color: Color: White, Light yellow, Pink white.
Help on Density: Density: 3.1 - 3.2, Average = 3.15
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Fluorescent.
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white
 

Optical Properties of Chlorapatite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.018 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2098,KPDmeas= 0.2131,KC= 0.2094
Help on Optical Data: Optical Data: Uniaxial (-), e=1.6675, w=1.675, bire=0.0075.
 

Calculated Properties of Chlorapatite

Help on Electron Density: Electron Density:

relectron=3.17 gm/cc
note: rChlorapatite =3.20 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00069
Boson Index = 0.99931
Help on Photoelectric: Photoelectric:

PEChlorapatite = 6.03 barns/electron
U=PEChlorapatite x relectron= 19.13 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chlorapatite is Not Radioactive
 

Chlorapatite Classification
Help on Dana Class: Dana Class: 41.8.1.2 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.8)where (A)5 (XO4)3 Zq
  (41.8.1)Dana Group
 
41.8.1.0 Apatite* Ca5(PO4)3(OH,F,Cl) P 63/m 6/m
 
41.8.1.1 Fluorapatite Ca5(PO4)3F P 63/m 6/m
 
41.8.1.2 Chlorapatite Ca5(PO4)3Cl P 63/m 6/m
 
41.8.1.3 Hydroxylapatite Ca5(PO4)3(OH) P 63/m 6/m
 
41.8.1.4 Carbonate-fluorapatite Ca5(PO4,CO3)3F P 63/m 6/m
 
41.8.1.5 Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) P 63/m 6/m
 
41.8.1.6 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3
 
41.8.1.6a Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3
 
41.8.1.6b Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3
 
41.8.1.7 Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m
 
41.8.1.8 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6
 
41.8.1.9 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3
Help on Strunz Class: Strunz Class: VII/B.39-20 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 Chlorapatite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Chlorapatite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 - Mineral and Gemstone Kingdom 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - Scandinavian mineral gallery 15 -University of Colorado - Mineral Structure Data 16 - WWW-MINCRYST 17 -École des Mines de Paris

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Chlorapatite

Ca5(PO4)3Cl
Dana No: 41.8.1.2 Strunz No: VII/B.39-20
Locality:

 

Notes:

 
 
   
 
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