Arsenuranylite Mineral Data

General Arsenuranylite Information

Chemical Formula:

Ca(UO2)4(AsO4)2(OH)4•6(H2O)

Composition:

Molecular Weight = 1,574.15 gm

Calcium 2.55 % Ca 3.56 % CaO

Uranium 60.48 % U 68.62 % UO₂

Arsenic 9.52 % As 14.60 % As₂O₅

Hydrogen 1.02 % H 9.16 % H₂O

Oxygen 26.43 % O

______ ______

100.00 % 95.93 % = TOTAL OXIDE

Empirical Formula:

Ca(UO₂)₄(AsO₄)₂(OH)₄•6(H₂O)

Environment:

Oxidation zone of As-containing sulfide deposits.

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

Russia. Link to MinDat.org Location Data.

Name Origin:

Named for its relationship to phosphuranylite as the end-member.

Name Pronunciation:

Arsenuranylite

Arsenuranylite Image

Images:

Arsenuranylite

Comments: Yellow crystalline arsenuranylite.
Location: Rudnoje, Bukhara District, Uzbekistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenuranylite Crystallography

Axial Ratios:

a:b:c =0.885:1:0.7912

Cell Dimensions:

a = 15.4, b = 17.4, c = 13.768, Z = 6; V = 3,689.27 Den(Calc)= 4.25

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Bmmb

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

By Intensity(I/I_o): 3.85(1), 7.72(1), 8.41(0.8),

Physical Properties of Arsenuranylite

Cleavage:

{001} Perfect

Color:

Orange, Yellow.

Density:

4.25

Diaphaneity:

Translucent

Habit:

Scaly - Morphology like fish scales.

Hardness:

2.5 - Finger Nail

Streak:

light yellow

Optical Properties of Arsenuranylite

Gladstone-Dale:

CI meas= -0.362 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.362 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1783,KPDmeas= 0.1783,KC= 0.1309
Ncalc = 1.56

Optical Data:

Biaxial (-), a=1.738, b=1.761, g=1.774, bire=0.0360

Calculated Properties of Arsenuranylite

Electron Density:

Bulk Density (Electron Density)=3.66 gm/cc
note: Specific Gravity of Arsenuranylite =4.25 gm/cc.

Fermion Index:

Fermion Index = 0.0045176363
Boson Index = 0.9954823637

Photoelectric:

PE_{Arsenuranylite}=1,600.54 barns/electron
U=PE_{Arsenuranylite} x r_electron=5,859.62 barns/cc.

Radioactivity:

GRapi = 4,441,113.30 (Gamma Ray American Petroleum Institute Units)
Concentration of Arsenuranylite per GRapi unit = 225.17 (PPB)

Arsenuranylite 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) 6.85 ± 1.71 grams of pure Arsenuranylite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 684.89 ±171.22 grams of pure Arsenuranylite .

**Estimated Radioactivity from Arsenuranylite** - 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 / 7.66 cm	108,267,245	2.93E-03	4,441,113.30	1,460.09
100 gm / 3.56 cm	10,826,725	2.93E-04	444,111.33	146.01
10 gm / 1.65 cm	1,082,672	2.93E-05	44,411.13	14.60
1 gm / 7.66 mm	108,267	2.93E-06	4,441.11	1.46
0.1 gm / 3.56 mm	10,827	2.93E-07	444.11	0.15
0.01 gm / 1.65 mm	1,083	2.93E-08	44.41	0.01
0.001 gm / 0.77 mm	108	2.93E-09	4.44	0.00

Weight of pure Arsenuranylite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.25 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

Arsenuranylite Classification

Dana Class:

42.04.09.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.04)where (AB)5 (XO4)2 Zq � x(H2O)

(42.04.09)Arsenuranylite Group

42.04.09.01 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4•6(H2O) Bmmb 2/m 2/m 2/m

42.04.09.02 Renardite Pb(UO2)4(PO4)2(OH)4•7(H2O) Bmmb 2/m 2/m 2/m

42.04.09.03 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8•7(H2O) Unk Ortho

Strunz Class:

08.EC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EC -UO2:RO4 = 3:2

08.EC.10 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4•6(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Dewindtite Pb3[H(UO2)3O2(PO4)2]2•12(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8•7(H2O) Unk Ortho

08.EC.10 Renardite Pb(UO2)4(PO4)2(OH)4•7(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4•8(H2O) C mcm 2/m 2/m 2/m

08.EC.10 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O) Bmmb 2/m 2/m 2/m

Other Arsenuranylite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Arsenuranylite :
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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Arsenuranylite

Ca(UO2)4(AsO4)2(OH)4•6(H2O)
Dana No: 42.04.09.01 Strunz No: 08.EC.10
Locality:

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