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Barium-alumopharmacosiderite Mineral Data

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General Barium-alumopharmacosiderite Information

Help on Chemical  Formula: Chemical Formula: BaAl4(AsO4)3(OH)5•5(H2O)
Help on Composition: Composition: Molecular Weight = 837.12 gm
   Barium    16.40 %  Ba   18.32 % BaO
   Aluminum  12.89 %  Al   24.36 % Al2O3
   Arsenic   26.85 %  As   41.18 % As2O5
   Hydrogen   1.81 %  H    16.14 % H2O
   Oxygen    42.05 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaAl4(AsO4)3(OH)5•5(H2O)
Help on IMA Status: IMA Status: Discredited IMA 1971 - Approved IMA 1966
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1966 as the aluminum end member with barium pharmcosiderite.
 

Barium-alumopharmacosiderite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 7.7134, Z = 1; V = 458.92 Den(Calc)= 3.03
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: P 43m ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.8(1), 2.73(0.8), 3.16(0.7),3.87(0.7), 4.46(0.6), 2.32(0.5), 2.33(0.4), 2.44(0.4),
 

Physical Properties of Barium-alumopharmacosiderite

Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Barium-alumopharmacosiderite

Help on Optical Data: Optical Data: Uniaxial (?).
  NCalc= 1.59 - from Gladstone-Dale relationship (KC = 0.1955) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Barium-alumopharmacosiderite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.88 gm/cc
note: Specific Gravity of Barium-alumopharmacosiderite =3.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBarium-alumopharmacosiderite = 87.88 barns/electron
U=PEBarium-alumopharmacosiderite x rElectron Density= 253.20 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Barium-alumopharmacosiderite is Not Radioactive
 

Barium-alumopharmacosiderite Classification

Help on  Dana Class: Dana Class: 42.08.01.04 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.08)where (AB)7 (XO4)4 Zq � x(H2O)
  (42.08.01)Pharmacosiderite Group
 
42.08.01.01 Pharmacosiderite KFe4(AsO4)3(OH)4•6-7(H2O) I 43m 4 3m
 
42.08.01.02 Alumopharmacosiderite KAl4(AsO4)3(OH)4•6•5(H2O) P 43m 4 3m
 
42.08.01.03 Bariopharmacosiderite BaFe4(AsO4)3(OH)5•5(H2O) I 42m 4 2m
 
42.08.01.04 Barium-alumopharmacosiderite? BaAl4(AsO4)3(OH)5•5(H2O) P 43m ? 4 3m
 
42.08.01.05 Natropharmacosiderite (Na,K)2Fe4(AsO4)3(OH)5•7(H2O) P 43m 4 3m
Help on  Strunz Class: Strunz Class: 08.DK.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
 
08.DK.10 Alumopharmacosiderite KAl4(AsO4)3(OH)4•6•5(H2O) P 43m 4 3m
 
08.DK.10 Barium-alumopharmacosiderite? BaAl4(AsO4)3(OH)5•5(H2O) P 43m ? 4 3m
 
08.DK.10 Bariopharmacosiderite BaFe4(AsO4)3(OH)5•5(H2O) I 42m 4 2m
 
08.DK.10 Barium-zinc-alumopharmacosiderite* (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3•5(H2O) I 42m 4 2m
 
08.DK.10 Pharmacosiderite KFe4(AsO4)3(OH)4•6-7(H2O) I 43m 4 3m
 
08.DK.10 Natropharmacosiderite (Na,K)2Fe4(AsO4)3(OH)5•7(H2O) P 43m 4 3m
 

Other Barium-alumopharmacosiderite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988)
Help on See Also: See Also: Links to other databases for Barium-alumopharmacosiderite :
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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Barium-alumopharmacosiderite

BaAl4(AsO4)3(OH)5•5(H2O)
Dana No: 42.08.01.04 Strunz No: 08.DK.10
Locality:

 

Notes:

 

 
   
 


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