Furongite Mineral Data

Furongite Mineral Data +

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General Furongite Information

Chemical Formula:

Al2(UO2)(PO4)3(OH)2·8(H2O)

Composition:

Molecular Weight = 787.04 gm

Uranium 30.24 % U 34.31 % UO₂

Aluminum 6.86 % Al 12.95 % Al₂O₃

Phosphorus 11.81 % P 27.05 % P₂O₅

Hydrogen 2.31 % H 20.60 % H₂O

Oxygen 48.79 % O

______ ______

100.00 % 94.92 % = TOTAL OXIDE

Empirical Formula:

Al₂(UO₂)(PO₄)₃(OH)₂·8(H₂O)

IMA Status:

Approved IMA 1976

Locality:

Link to MinDat.org Location Data.

Furongite Image

Images:

Furongite

Comments: Pale yellow crystalline furongite.
Location: Furong Lin, Ling Wu, Western Hunan Province, China. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Furongite Crystallography

Axial Ratios:

a:b:c =1.2602:1:0.8589

Cell Dimensions:

a = 17.87, b = 14.18, c = 12.18, Z = 7; alpha = 67.8°, beta = 77.5°, gamma = 79.9° V = 2,746.61 Den(Calc)= 3.33

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 10.2(1), 8.62(0.8), 4.31(0.5),

Physical Properties of Furongite

Cleavage:

[???] Perfect, [???] Perfect, [???] Perfect

Color:

Yellow, Light yellow.

Density:

2.82 - 2.9, Average = 2.86

Diaphaniety:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

2-3 - Gypsum-Calcite

Luminescence:

Fluorescent.

Luster:

Vitreous (Glassy)

Streak:

yellow white

Optical Properties of Furongite

Gladstone-Dale:

CI meas= -0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1686,KPDmeas= 0.1963,KC= 0.1807

Optical Data:

Biaxial (-), a=1.543-1.549, b=1.564-1.567, g=1.57-1.575, bire=0.0260-0.0270

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Furongite

Electron Density:

r_electron=3.16 gm/cc
note: r_Furongite=3.33 gm/cc.

Fermion Index

Fermion Index = 0.00241
Boson Index = 0.99759

Photoelectric:

PE_Furongite= 724.79 barns/electron
U=PE_Furongite x r_electron=2,287.68 barns/cc.

Radioactivity:

GRapi = 2,443,466.52 (Gamma Ray American Petroleum Institute Units)

Furongite 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) 12.45 ± 3.11 grams of pure Furongite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1244.8 ±311.20 grams of pure Furongite .

**Estimated Radioactivity from Furongite** - 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 / 8.31 cm	54,135,829	1.46E-03	2,443,466.52	803.33
100 gm / 3.86 cm	5,413,583	1.46E-04	244,346.65	80.33
10 gm / 1.79 cm	541,358	1.46E-05	24,434.67	8.03
1 gm / 8.31 mm	54,136	1.46E-06	2,443.47	0.80
0.1 gm / 3.86 mm	5,414	1.46E-07	244.35	0.08
0.01 gm / 1.79 mm	541	1.46E-08	24.43	0.01
0.001 gm / 0.83 mm	54	1.46E-09	2.44	0.00

Weight of pure Furongite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.33 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

Furongite Classification

Dana Class:

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

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.20)Dana Group

42.11.20.1 Furongite Al2(UO2)(PO4)3(OH)2·8(H2O) P1 1

Strunz Class:

VII/E.05-50 VII - Phosphates, Arsenates and Vanadates

VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-

VII/E.05 - Ranunculite - Moreauite series

VII/E.05-10 Ranunculite HAl(UO2)(PO4)(OH)3·4(H2O) Unk (pseudo ORTH) Mono

VII/E.05-20 Triangulite Al3(UO2)4(PO4)4(OH)5·5(H2O) P1,P 1 Tri

VII/E.05-30 Upalite Al(UO2)3(PO4)2O(OH)·7(H2O) P 2₁/a 2/m

VII/E.05-40 Threadgoldite Al(UO2)2(PO4)2(OH)·8(H2O) C 2/c 2/m

VII/E.05-50 Furongite Al2(UO2)(PO4)3(OH)2·8(H2O) P1 1

VII/E.05-60 Moreauite Al3(UO2)(PO4)3(OH)2·13(H2O) P 2₁/c 2/m

Other Furongite 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 Furongite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - Uranium Minerals 13 -École des Mines de Paris

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Furongite

Al2(UO2)(PO4)3(OH)2·8(H2O)
Dana No: 42.11.20.1 Strunz No: VII/E.05-50
Locality:

Notes: