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Hydroxylapatite-M (Apatit-(CaOH)-M)

Collectors Summary

Hardness (Mohs) 5
Cleavages keine
Fracture splittrig
Crystal System monoklin, P21/c

Additional information / Summary

Hydroxylapatit-M ehemals Apatit-(CaOH)-M davor Klinohydroxylapatit

Chemism

Chemical formula

Ca5(PO4)3OH

Chemical composition

Calcium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 502.3138206 u; Number of atoms in the formula: 22

Info

Empirical formula:

Ca5(PO4)3OH

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.20

1

4.55

1.0079470

1.0079470
Oxygen

O

41.41

13

59.09

15.9994300

207.9925900
Phosphorus

P

18.50

3

13.64

30.9737612

92.9212836
Calcium

Ca

39.89

5

22.73

40.0784000

200.3920000

Analysis wt%

Ø P2O5 : 33.20, SO3 : 10.01, CaO : 50.07, Na2O : 3.29, Cl : 1.64, H2O : 1.38 (Ref: European Journal of Mineralogy 2006)

Strunz 9th edition incl. updates

8.BN.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
N: Mit ausschließlich [Kationen] (OH, etc.):RO4 = 0.33:1
05:Apatit-Gruppe

Classification by Hölzel

8.BO.300

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
3: monoclinic Apatites

Dana 8th edition

41.08.06.02

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
08: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A)5 (XO4)3 Zq
06: Clinomimetite Group

IMA status

anerkannt 2004

Mineral status

Polytype

Variety / polytype of

Hydroxylapatite

IMA Classification

IMA Classification

 Apatite Supergroup  ⇒ Apatite group

Optical Properties

max. Birefringence

0.017
Birefringence chart\! Hydroxylapatite-M title=Birefringence chart Hydroxylapatite-M

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.632

RI value β

1.633

RI value γ / ε

1.649

Ri mean

1.638

2V angle

Biaxial (+) nd

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

9.445

Cell parameters b (Å)

18.853

Cell parameters c (Å)

6.878

Cell parameters a/b or c/a

0.501

Cell parameters c/b

0.365

Cell parameters α

90°

Cell parameters β

120°

Cell parameters γ

90°

Z

4

Volumne (ų)

1060.658

X-Ray Powder Diffraction

2.817(66), 2.781(41), 2.724(79), 2.630(24), 2.267(100), 1.945(39), 1.841(58), 1.784(70)
XRD chart Hydroxylapatite-M

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.07 (gemessen)

3.145 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

splittrig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Kanada/Ontario/Thunder Bay District/Unorganized Thunder Bay District/Seagull Lake - Leckie Lake

Preface

Author (Name, Year)

Chakhmouradian & Medici, 2006

References

European Journal of Mineralogy 18 (2006), 105.

Mineralogical Record, vol. 39, no. 2 (March–April 2008) - [umbenennung zu Apatit-(CaCl)].

Pasero, M., Kampf, A. R., Ferraris, C., Pekov, I. V., Rakovan, J. and White, T. J. - Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy 22 (2010), 163-179. - [umbenennung zu Hydroxylapatit-M].

IMA group assignments

Other languages

German

Hydroxylapatit-M

English

Hydroxylapatite-M

Simplified Chinese

单斜羟磷灰石

old name

English

Apatite-(CaOH)-M

Alternative Name

German

Apatit-(CaOH)-M

Clinohydroxylapatite

Klinohydroxylapatit

Russian

Апатит-(CaOH)-M

CNMNC (IMA)-Number

IMA 2004-006

Locations with GPS information