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Attakolite Mineral Data

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General Attakolite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Sr)Mn++(Al,Fe+++)4[(Si,P)O4]H(PO4)3(OH)4
Help on Composition: Composition: Molecular Weight = 668.01 gm
   Strontium    2.62 %  Sr    3.10 % SrO
   Calcium      4.80 %  Ca    6.72 % CaO
   Manganese    8.22 %  Mn   10.62 % MnO
   Aluminum    14.94 %  Al   28.24 % Al2O3
   Iron         2.51 %  Fe    3.59 % Fe2O3
   Silicon      2.94 %  Si    6.30 % SiO2
   Phosphorus  15.30 %  P    35.06 % P2O5
   Hydrogen     0.75 %  H     6.74 % H2O
   Oxygen      47.90 %  O
              ______        ______ 
              100.00 %      100.36 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.8Sr0.2Mn2+Al3.7Fe3+0.3H(SiO4)0.7(PO4)3.3(OH)4
Help on Environment: Environment: In an iron deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Vatana mine, near Nasum, Kristianstad, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "salmon" for the pale pink color.
Help on Name Pronunciation: Name Pronunciation: Attakolite + Pronunciation Say ATTAKOLITE
Help on Synonym: Synonym: Attacolite
  ICSD 67528
  PDF 18-146

Attakolite Image

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Comments: Pink to yellowish attakolite with black hematite.
Location: Vestana Iron Mine, near Nasum, Skane, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Attakolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4976:1:0.6379
Help on Cell Dimensions: Cell Dimensions: a = 17.188, b = 11.477, c = 7.322, Z = 4; beta = 113.83° V = 1,321.25 Den(Calc)= 3.36
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.077(1), 2.4(0.4), 3.121(0.3),

Physical Properties of Attakolite

Help on Color: Color: White, Pink, Pale red.
Help on Density: Density: 3.09 - 3.23, Average = 3.16
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 5 - Apatite

Optical Properties of Attakolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.062 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1964,KPDmeas= 0.2088,KC= 0.2094
Ncalc = 1.65 - 1.7
Help on Optical Data: Optical Data: Biaxial (+), a=1.65-1.655, b=1.654-1.664, g=1.661-1.675, bire=0.0110-0.0200, 2V(Calc)=76-86, 2V(Meas)=75-84.

Calculated Properties of Attakolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Attakolite =3.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.00403828
Boson Index = 0.99596172
Help on Photoelectric: Photoelectric: PEAttakolite = 7.52 barns/electron
U=PEAttakolite x rElectron Density= 23.39 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Attakolite is Not Radioactive

Attakolite Classification

Help on  Dana Class: Dana Class: (43)Compound Phosphates, etc.
  (43.04)(Anhydrous Compound Anions With Hydroxyl or Halogen)
  (43.04.13)Dana Group Attakolite (Ca,Sr)Mn(Al,Fe)4[(Si,P)O4]H(PO4)3(OH)4 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.BH.60 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
08.BH.60 Attakolite (Ca,Sr)Mn(Al,Fe)4[(Si,P)O4]H(PO4)3(OH)4 C 2/m 2/m

Other Attakolite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Attakolite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.BH.60





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