Barium-zinc-alumopharmacosiderite Mineral Data

Barium-zinc-alumopharmacosiderite Mineral Data

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General Barium-zinc-alumopharmacosiderite Information

Chemical Formula:

(Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3·5(H2O)

Composition:

Molecular Weight = 689.30 gm

Potassium 0.28 % K 0.34 % K₂O

Barium 3.98 % Ba 4.45 % BaO

Aluminum 11.74 % Al 22.19 % Al₂O₃

Zinc 1.90 % Zn 2.36 % ZnO

Iron 8.10 % Fe 11.58 % Fe₂O₃

Copper 0.46 % Cu 0.58 % CuO

Arsenic 32.61 % As 50.02 % As₂O₅

Hydrogen 1.46 % H 13.07 % H₂O

Oxygen 39.46 % O

______ ______

100.00 % 104.58 % = TOTAL OXIDE

Empirical Formula:

0.5(Ba_0.4)0.5(K_0.1)0.5(Zn_0.4)0.5(Cu_0.1)Al₃Fe³⁺(AsO₄)₃·5(H₂O)

IMA Status:

Not Approved IMA

Locality:

Link to MinDat.org Location Data.

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Barium-zinc-alumopharmacosiderite Crystallography

Axial Ratios:

a:c = 1:1.01285

Cell Dimensions:

a = 15.476, c = 15.675, Z = 6; V = 3,754.27 Den(Calc)= 1.83

Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 7.736(1), 7.824(1), 2.754(0.6),

Physical Properties of Barium-zinc-alumopharmacosiderite

Color:

Colorless, Yellow.

Density:

2.8

Diaphaniety:

Transparent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Optical Properties of Barium-zinc-alumopharmacosiderite

Gladstone-Dale:

CI meas= 0.077 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.413 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3093,KPDmeas= 0.2021,KC= 0.2189

Optical Data:

Uniaxial (-), e=1.56, w=1.572, bire=0.0120.

Calculated Properties of Barium-zinc-alumopharmacosiderite

Electron Density:

r_electron=2.68 gm/cc
note: r_{Barium-zinc-alumopharmacosiderite}=2.80 gm/cc.

Fermion Index

Fermion Index = 0.00978
Boson Index = 0.99022

Photoelectric:

PE_{Barium-zinc-alumopharmacosiderite}= 42.80 barns/electron
U=PE_{Barium-zinc-alumopharmacosiderite} x r_electron= 114.61 barns/cc.

Radioactivity:

GRapi = 3.92 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Barium-zinc-alumopharmacosiderite - barely detectable

Barium-zinc-alumopharmacosiderite Classification

Dana Class:

37.0.0.0 (37)Phosphate Minerals

(37.0)Without Dana Classification Numbers

(Arsenate, Hydrated)

Strunz Class:

VII/X.00-00 VII - Phosphates, Arsenates and Vanadates

VII/X - Unclassified Strunz Phosphates, Arsenates and Vanadates

VII/X.00 - Arsenate, Hydrated

Other Barium-zinc-alumopharmacosiderite Information

References:

PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)

See Also:

Links to other databases for Barium-zinc-alumopharmacosiderite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Barium-zinc-alumopharmacosiderite Specimen Label here :

Barium-zinc-alumopharmacosiderite

(Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3·5(H2O)
Dana No: Unknown Strunz No: VII/X.00-00
Locality:

Notes: