Arsenuranospathite Mineral Data

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General Arsenuranospathite Information

Chemical Formula:

HAl(UO2)4(AsO4)4•40(H2O)

Composition:

Molecular Weight = 2,384.39 gm

Uranium 39.93 % U 45.30 % UO₂

Aluminum 1.13 % Al 2.14 % Al₂O₃

Arsenic 12.57 % As 19.28 % As₂O₅

Hydrogen 3.42 % H 30.60 % H₂O

Oxygen 42.94 % O

______ ______

100.00 % 97.32 % = TOTAL OXIDE

Empirical Formula:

HAl(UO₂)₄(AsO₄)₄•40(H₂O)

Environment:

A very rare secondary mineral in uranium deposits.

IMA Status:

Approved IMA 1978

Locality:

In Germany, in the Black Forest, at Menzenschwand and on the dump of the Sophia mine, near Wittichen. Link to MinDat.org Location Data.

Name Origin:

As the "arsenate" analog of "uranospathite."

Name Pronunciation:

Arsenuranospathite + Pronunciation

Arsenuranospathite Image

Images:

Arsenuranospathite

Comments: Yellowgreen to brown arsenuranospathite crust on matrix.
Location: Elias Mine, Jachymov, Bohemia, Czech Republic. Scale: Specimen Size 2.1x2.7 cm.
© Diederik Visser

Arsenuranospathite Crystallography

Axial Ratios:

a:c = 1:4.24162

Cell Dimensions:

a = 7.16, c = 30.37, Z = 1; V = 1,556.94 Den(Calc)= 2.54

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: P 4₁/n

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

By Intensity(I/I_o): 7.62(1), 14.62(1), 3.49(0.9),

Physical Properties of Arsenuranospathite

Cleavage:

{001} Perfect, {100} Distinct

Color:

White, Light yellow.

Density:

2.54

Diaphaneity:

Transparent to Translucent

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Arsenuranospathite

Gladstone-Dale:

CI meas= -0.149 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.149 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2126,KPDmeas= 0.2126,KC= 0.185
Ncalc = 1.47

Optical Data:

Uniaxial (-), e=1.538, w=1.542, bire=0.0040.

Calculated Properties of Arsenuranospathite

Electron Density:

Bulk Density (Electron Density)=2.36 gm/cc
note: Specific Gravity of Arsenuranospathite =2.54 gm/cc.

Fermion Index:

Fermion Index = 0.003086318
Boson Index = 0.996913682

Photoelectric:

PE_{Arsenuranospathite}= 985.47 barns/electron
U=PE_{Arsenuranospathite} x r_electron=2,322.12 barns/cc.

Radioactivity:

GRapi = 3,157,581.60 (Gamma Ray American Petroleum Institute Units)
Concentration of Arsenuranospathite per GRapi unit = 316.70 (PPB)

Arsenuranospathite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 9.63 ± 2.41 grams of pure Arsenuranospathite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 963.29 ±240.82 grams of pure Arsenuranospathite .

**Estimated Radioactivity from Arsenuranospathite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 9.09 cm	71,476,904	1.93E-03	3,157,581.60	1,038.11
100 gm / 4.22 cm	7,147,690	1.93E-04	315,758.16	103.81
10 gm / 1.96 cm	714,769	1.93E-05	31,575.82	10.38
1 gm / 9.09 mm	71,477	1.93E-06	3,157.58	1.04
0.1 gm / 4.22 mm	7,148	1.93E-07	315.76	0.10
0.01 gm / 1.96 mm	715	1.93E-08	31.58	0.01
0.001 gm / 0.91 mm	71	1.93E-09	3.16	0.00

Weight of pure Arsenuranospathite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.54 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Arsenuranospathite Classification

Dana Class:

40.02a.23.01 (40)Hydrated Phosphates, etc

(40.02a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.02a.23)Dana Group

40.02a.23.01 Arsenuranospathite HAl(UO2)4(AsO4)4•40(H2O) P 4₁/n 4/m

Strunz Class:

08.EB.25 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EB -UO2:RO4 = 1:1

08.EB.25 Arsenuranospathite HAl(UO2)4(AsO4)4•40(H2O) P 4₁/n 4/m

08.EB.25 Uranospathite Al1-x[]x[(UO2)(PO4)]2(H2O)203xF1-3x Pnn2 mm2

Other Arsenuranospathite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Arsenuranospathite :
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
15 - Uranium Minerals

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Arsenuranospathite

HAl(UO2)4(AsO4)4•40(H2O)
Dana No: 40.02a.23.01 Strunz No: 08.EB.25
Locality:

Notes: