|
|
Bariopharmacosiderite Mineral Data
|
|
|
General Bariopharmacosiderite Information
|
Chemical Formula: |
BaFe+++4(AsO4)3(OH)5•5(H2O) |
Composition: |
Molecular Weight = 952.59 gm |
|
Barium 14.42 % Ba 16.10 % BaO |
|
Iron 23.45 % Fe 33.53 % Fe2O3 |
|
Arsenic 23.60 % As 36.19 % As2O5 |
|
Hydrogen 1.59 % H 14.18 % H2O |
|
Oxygen 36.95 % O |
|
______ ______ |
|
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 |
|
Bariopharmacosiderite Image |
Images:
|
|
Bariopharmacosiderite Crystallography
|
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), |
|
Physical Properties of Bariopharmacosiderite
|
Color: |
Brown. |
Diaphaneity: |
Transparent to Translucent |
Hardness: |
3 - Calcite |
Luster: |
Vitreous (Glassy) |
|
Optical Properties of Bariopharmacosiderite
|
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. |
|
Calculated Properties of Bariopharmacosiderite
|
Electron Density: |
Bulk Density (Electron Density)=2.97 gm/cc note: Specific Gravity of Bariopharmacosiderite =3.14 gm/cc. |
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. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bariopharmacosiderite is Not Radioactive |
|
Bariopharmacosiderite Classification
|
Dana Class: |
42.08.01.03 (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 |
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 Bariopharmacosiderite Information
|
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
Search for Bariopharmacosiderite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Bariopharmacosiderite :
Ask about Bariopharmacosiderite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Bariopharmacosiderite Specimen Label here :
Bariopharmacosiderite
BaFe+++4(AsO4)3(OH)5•5(H2O)
Dana No: 42.08.01.03 Strunz No: 08.DK.10
Locality:
Notes:
|
|
|
|
|
|
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.