Xiangjiangite Mineral Data

General Xiangjiangite Information

Chemical Formula:

(Fe+++,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O)

Composition:

Molecular Weight = 1,916.94 gm

Uranium 49.67 % U 56.35 % UO₂

Aluminum 0.70 % Al 1.33 % Al₂O₃

Iron 1.46 % Fe 2.08 % Fe₂O₃

Phosphorus 3.23 % P 7.40 % P₂O₅

Hydrogen 2.37 % H 21.15 % H₂O

Sulfur 3.35 % S 8.35 % SO₃

Oxygen 39.23 % O

______ ______

100.00 % 96.66 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺_0.5Al_0.5(UO₂)₄(PO₄)₂(SO₄)₂(OH)�22(H₂O)

IMA Status:

Approved IMA 1978

Locality:

Xiangjiang River, Hunan, China. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Name Pronunciation:

Xiangjiangite + Pronunciation

Xiangjiangite Crystallography

Axial Ratios:

a:b:c =0.9661:1:1.8335

Cell Dimensions:

a = 12.54, b = 12.98, c = 23.8, Z = 4; beta = 108.6° V = 3,671.57 Den(Calc)= 3.47

Crystal System:

Monoclinic Space Group: C 2/c or Cc

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

By Intensity(I/I_o): 11.11(1), 3.29(0.8), 3.74(0.8),

Physical Properties of Xiangjiangite

Color:

Yellow, Bright yellow.

Density:

2.9 - 3.1, Average = 3

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Silky

Streak:

light yellow

Optical Properties of Xiangjiangite

Gladstone-Dale:

CI meas= -0.157 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1659,KPDmeas= 0.1919,KC= 0.1659
Ncalc = 1.48 - 1.58

Optical Data:

Biaxial (-), a=1.558, b=1.576, g=1.593, bire=0.0350, 2V(Calc)=86, 2V(Meas)=87.

Pleochroism (x):

yellow.

Pleochroism (y):

yellow.

Pleochroism (z):

weak yellow.

Calculated Properties of Xiangjiangite

Electron Density:

Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Xiangjiangite =3.47 gm/cc.

Fermion Index:

Fermion Index = 0.0043277083
Boson Index = 0.9956722917

Photoelectric:

PE_{Xiangjiangite}=1,241.69 barns/electron
U=PE_{Xiangjiangite} x r_electron=3,913.21 barns/cc.

Radioactivity:

GRapi = 3,845,084.01 (Gamma Ray American Petroleum Institute Units)
Concentration of Xiangjiangite per GRapi unit = 260.07 (PPB)

Xiangjiangite 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) 7.91 ± 1.98 grams of pure Xiangjiangite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 791.05 ±197.76 grams of pure Xiangjiangite .

**Estimated Radioactivity from Xiangjiangite** - 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 / 8.20 cm	88,906,709	2.40E-03	3,845,084.01	1,264.14
100 gm / 3.80 cm	8,890,671	2.40E-04	384,508.40	126.41
10 gm / 1.77 cm	889,067	2.40E-05	38,450.84	12.64
1 gm / 8.20 mm	88,907	2.40E-06	3,845.08	1.26
0.1 gm / 3.80 mm	8,891	2.40E-07	384.51	0.13
0.01 gm / 1.77 mm	889	2.40E-08	38.45	0.01
0.001 gm / 0.82 mm	89	2.40E-09	3.85	0.00

Weight of pure Xiangjiangite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.47 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

Xiangjiangite Classification

Dana Class:

43.05.06.01 (43)Compound Phosphates, etc.

(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen)

(43.05.06)Dana Group

43.05.06.01 Xiangjiangite (Fe,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O) C 2/c or Cc Mono

Strunz Class:

08.EB.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EB -UO2:RO4 = 1:1

08.EB.05 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Heinrichite Ba(UO2)2(AsO4)2•10-12(H2O) P 2/c 2/m

08.EB.05 Kahlerite Fe(UO2)2(AsO4)2•10-12(H2O) P 4₁/n 4/m

08.EB.05 Uranocircite Ba(UO2)2(PO4)2•12(H2O) P 4/nnc 4/m 2/m 2/m

08.EB.05 Novacekite Mg(UO2)2(AsO4)2•12(H2O) P 4₁/n 4/m

08.EB.05 Saleeite Mg(UO2)2(PO4)2•10(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Xiangjiangite (Fe,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O) C 2/c or Cc Mono

08.EB.05 Torbernite Cu(UO2)2(PO4)2•8-12(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m

08.EB.05 Zeunerite Cu(UO2)2(AsO4)2•10-16(H2O) P 4/nnc 4/m 2/m 2/m

08.EB.05 Metarauchite! Ni(UO2)2(AsO4)2•8H2O P1 1

Other Xiangjiangite Information

References:

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

See Also:

Links to other databases for Xiangjiangite :
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 Xiangjiangite Specimen Label here :

Xiangjiangite

(Fe+++,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O)
Dana No: 43.05.06.01 Strunz No: 08.EB.05
Locality:

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