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Bariopharmacosiderite Mineral Data
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General Bariopharmacosiderite Information
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 Chemical Formula: |
BaFe+++4(AsO4)3(OH)5•5(H2O) |
| Composition: |
Molecular Weight = 952.59 gm |
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Barium 14.42 % Ba 16.10 % BaO |
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Iron 23.45 % Fe 33.53 % Fe2O3 |
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Arsenic 23.60 % As 36.19 % As2O5 |
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Hydrogen 1.59 % H 14.18 % H2O |
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Oxygen 36.95 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
BaFe3+4(AsO4)3(OH)5•5(H2O) |
| IMA Status: |
Approved IMA 1966 |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named as the barium analog of pharmacosiderite. |
| Synonym: |
Barium-pharmacosiderite - Renamed Bariopharmacosiderite by Mineralogical Record, v39 (2008), p131 |
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Bariopharmacosiderite Image |
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Images:
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Bariopharmacosiderite Crystallography
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| Axial Ratios: |
a:c = 1:1.01274 |
| Cell Dimensions: |
a = 15.85, c = 16.052, Z = 8; V = 4,032.62 Den(Calc)= 3.14 |
| Crystal System: |
Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: I 42m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.962(1), 3.24(0.75), 4.017(0.75), |
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Physical Properties of Bariopharmacosiderite
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| Color: |
Brown. |
| Diaphaneity: |
Transparent to Translucent |
| Hardness: |
3 - Calcite |
| Luster: |
Vitreous (Glassy) |
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Optical Properties of Bariopharmacosiderite
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| Gladstone-Dale: |
CI calc= 0.221 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1815,KC= 0.2331
Ncalc = 1.73 |
| Optical Data: |
Uniaxial (+/-), a=1.57, b=1.57, bire=0.0000. |
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Calculated Properties of Bariopharmacosiderite
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| Electron Density: |
Bulk Density (Electron Density)=2.97 gm/cc
note: Specific Gravity of Bariopharmacosiderite =3.14 gm/cc.
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| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PEBariopharmacosiderite = 84.60 barns/electron
U=PEBariopharmacosiderite x rElectron Density= 250.99 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bariopharmacosiderite is Not Radioactive |
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Bariopharmacosiderite Classification
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| Dana Class: |
42.08.01.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.08)where (AB)7 (XO4)4 Zq � x(H2O) |
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(42.08.01)Pharmacosiderite Group |
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42.08.01.01 Pharmacosiderite KFe4(AsO4)3(OH)4•6-7(H2O) I 43m 4 3m |
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42.08.01.02 Alumopharmacosiderite KAl4(AsO4)3(OH)4•6•5(H2O) P 43m 4 3m |
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42.08.01.03 Bariopharmacosiderite BaFe4(AsO4)3(OH)5•5(H2O) I 42m 4 2m |
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42.08.01.04 Barium-alumopharmacosiderite? BaAl4(AsO4)3(OH)5•5(H2O) P 43m ? 4 3m |
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42.08.01.05 Natropharmacosiderite (Na,K)2Fe4(AsO4)3(OH)5•7(H2O) P 43m 4 3m |
| Strunz Class: |
08.DK.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1 |
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08.DK.10 Alumopharmacosiderite KAl4(AsO4)3(OH)4•6•5(H2O) P 43m 4 3m |
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08.DK.10 Barium-alumopharmacosiderite? BaAl4(AsO4)3(OH)5•5(H2O) P 43m ? 4 3m |
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08.DK.10 Bariopharmacosiderite BaFe4(AsO4)3(OH)5•5(H2O) I 42m 4 2m |
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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 |
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08.DK.10 Pharmacosiderite KFe4(AsO4)3(OH)4•6-7(H2O) I 43m 4 3m |
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08.DK.10 Natropharmacosiderite (Na,K)2Fe4(AsO4)3(OH)5•7(H2O) P 43m 4 3m |
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Other Bariopharmacosiderite Information
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Bariopharmacosiderite :
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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Bariopharmacosiderite
BaFe+++4(AsO4)3(OH)5•5(H2O)
Dana No: 42.08.01.03 Strunz No: 08.DK.10
Locality:
Notes:
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