Hugelite Mineral Data

General Hugelite Information

Chemical Formula:

Pb2(UO2)3(AsO4)2(OH)4•3(H2O)

Composition:

Molecular Weight = 1,624.40 gm

Uranium 43.96 % U 49.87 % UO₂

Arsenic 9.22 % As 14.15 % As₂O₅

Hydrogen 0.62 % H 5.55 % H₂O

Lead 25.51 % Pb 27.48 % PbO

Oxygen 20.68 % O

______ ______

100.00 % 97.05 % = TOTAL OXIDE

Empirical Formula:

Pb₂(UO₂)₃(AsO₄)₂(OH)₄•3(H₂O)

Environment:

The As-dominant analogue of dumontite.

IMA Status:

Valid Species (Pre-IMA) 1913

Locality:

Reichenbach, near Lahr, Baden-Wurttemberg, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for F. Hugel.

Name Pronunciation:

Hugelite

Synonym:

Huegelite

Hugelite Crystallography

Axial Ratios:

a:b:c =1.7954:1:0.407

Cell Dimensions:

a = 31.066, b = 17.303, c = 7.043, Z = 8; beta = 96.492° V = 3,761.58 Den(Calc)= 5.74

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 3.73(1), 3.06(0.9), 1.833(0.7),2.89(0.7), 3(0.7), 2.16(0.6), 2.7(0.6), 4.33(0.6),

Physical Properties of Hugelite

Color:

Brown, Orange yellow.

Density:

5.1

Diaphaneity:

Transparent to Translucent

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2.5 - Finger Nail

Luster:

Adamantine - Greasy

Streak:

pale yellow

Optical Properties of Hugelite

Gladstone-Dale:

CI meas= -0.387 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.232 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1579,KPDmeas= 0.1777,KC= 0.1282
Ncalc = 1.65 - 1.74

Optical Data:

Biaxial (+), a=1.898, g=1.915, bire=0.0170, 2V(Meas)=25. Dispersion r << v extreme.

Pleochroism (x):

yellow or yellow.

Pleochroism (y):

orange yellow or orange yellow.

Pleochroism (z):

pale yellow or colorless.

Calculated Properties of Hugelite

Electron Density:

Bulk Density (Electron Density)=4.83 gm/cc
note: Specific Gravity of Hugelite =5.74 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Hugelite=1,656.39 barns/electron
U=PE_Hugelite x r_electron=8,006.98 barns/cc.

Radioactivity:

GRapi = 3,155,633.69 (Gamma Ray American Petroleum Institute Units)
Concentration of Hugelite per GRapi unit = 316.89 (PPB)

Hugelite 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) 9.64 ± 2.41 grams of pure Hugelite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 963.88 ±240.97 grams of pure Hugelite .

**Estimated Radioactivity from Hugelite** - 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 / 6.93 cm	78,688,611	2.13E-03	3,155,633.69	1,037.47
100 gm / 3.22 cm	7,868,861	2.13E-04	315,563.37	103.75
10 gm / 1.49 cm	786,886	2.13E-05	31,556.34	10.37
1 gm / 6.93 mm	78,689	2.13E-06	3,155.63	1.04
0.1 gm / 3.22 mm	7,869	2.13E-07	315.56	0.10
0.01 gm / 1.49 mm	787	2.13E-08	31.56	0.01
0.001 gm / 0.69 mm	79	2.13E-09	3.16	0.00

Weight of pure Hugelite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.74 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

Hugelite Classification

Dana Class:

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

(42.04)where (AB)5 (XO4)2 Zq ï¿½ x(H2O)

(42.04.05)Dumontite Group

42.04.05.01 Dumontite Pb2(UO2)3O2(PO4)2•5(H2O) P 2₁/m 2/m

42.04.05.02 Hugelite Pb2(UO2)3(AsO4)2(OH)4•3(H2O) P 2₁/m 2/m

42.04.05.03 Bergenite Ca2Ba4[(UO3)2O2(PO4)2]3(H2O)16 P 2₁/c 2/m

Strunz Class:

08.EC.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EC -UO2:RO4 = 3:2

08.EC.15 Dumontite Pb2(UO2)3O2(PO4)2•5(H2O) P 2₁/m 2/m

08.EC.15 Hugelite Pb2(UO2)3(AsO4)2(OH)4•3(H2O) P 2₁/m 2/m

Other Hugelite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin, v 89, p 897) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Hugelite :
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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Print or Cut-and-Paste your Hugelite Specimen Label here :

Hugelite

Pb2(UO2)3(AsO4)2(OH)4•3(H2O)
Dana No: 42.04.05.02 Strunz No: 08.EC.15
Locality:

Notes:

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