Yingjiangite Mineral Data

General Yingjiangite Information

Chemical Formula:

(K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O)

Composition:

Molecular Weight = 2,607.53 gm

Potassium 4.50 % K 5.42 % K₂O

Calcium 0.38 % Ca 0.54 % CaO

Uranium 63.90 % U 72.49 % UO₂

Phosphorus 4.75 % P 10.89 % P₂O₅

Hydrogen 0.70 % H 6.22 % H₂O

Oxygen 25.77 % O

______ ______

100.00 % 95.55 % = TOTAL OXIDE

Empirical Formula:

K₃Ca_0.25(UO₂)₇(PO₄)₄(OH)₆•6(H₂O)

Environment:

Secondary product in the oxidzed zone containing uraninite and uranothorite.

IMA Status:

Approved IMA 1990

Locality:

Tongbiguan village, Yingiang County, Yunnan Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Yingjiangite + Pronunciation

Synonym:

IMA1989-001

Yingjiangite Image

Images:

Yingjiangite

Comments: Thin coating of yellow yingjiangite on matrix.
Location: Kladaske Mine, Erzgeborge, Czech Republi. Scale: Picture size 1.5 cm.
© John Veevaert

Yingjiangite Crystallography

Axial Ratios:

a:b:c =0.9014:1:0.7858

Cell Dimensions:

a = 15.707, b = 17.424, c = 13.692, Z = 4; V = 3,747.21 Den(Calc)= 4.62

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): 7.89(1), 3.94(0.5), 3.15(0.29),

Physical Properties of Yingjiangite

Color:

Yellow, Golden yellow.

Density:

4.54

Diaphaneity:

Transparent to Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

3-4 - Calcite-Fluorite

Luminescence:

Fluorescent, Short UV=weak yellow green, Long UV=weak yellow green.

Luster:

Subadamantine

Streak:

yellow

Optical Properties of Yingjiangite

Gladstone-Dale:

CI meas= -0.213 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.192 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1494,KPDmeas= 0.1521,KC= 0.1253
Ncalc = 1.57 - 1.58

Optical Data:

Biaxial (-), a=1.669, b=1.692, g=1.71, bire=0.0410, 2V(Calc)=80, 2V(Meas)=83.

Pleochroism (x):

colorless.

Pleochroism (y):

light yellow.

Pleochroism (z):

yellow.

Calculated Properties of Yingjiangite

Electron Density:

Bulk Density (Electron Density)=3.97 gm/cc
note: Specific Gravity of Yingjiangite =4.62 gm/cc.

Fermion Index:

Fermion Index = 0.0047361028
Boson Index = 0.9952638972

Photoelectric:

PE_Yingjiangite=1,688.43 barns/electron
U=PE_Yingjiangite x r_electron=6,701.06 barns/cc.

Radioactivity:

GRapi = 4,679,034.10 (Gamma Ray American Petroleum Institute Units)
Concentration of Yingjiangite per GRapi unit = 213.72 (PPB)

Yingjiangite 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) 6.50 ± 1.63 grams of pure Yingjiangite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 650.06 ±162.52 grams of pure Yingjiangite .

**Estimated Radioactivity from Yingjiangite** - 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 / 7.45 cm	114,381,743	3.09E-03	4,679,034.10	1,538.31
100 gm / 3.46 cm	11,438,174	3.09E-04	467,903.41	153.83
10 gm / 1.60 cm	1,143,817	3.09E-05	46,790.34	15.38
1 gm / 7.45 mm	114,382	3.09E-06	4,679.03	1.54
0.1 gm / 3.46 mm	11,438	3.09E-07	467.90	0.15
0.01 gm / 1.60 mm	1,144	3.09E-08	46.79	0.02
0.001 gm / 0.74 mm	114	3.09E-09	4.68	0.00

Weight of pure Yingjiangite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.62 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

Yingjiangite Classification

Dana Class:

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

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

(42.06.12)Dana Group

42.06.12.01 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O) Bmmb 2/m 2/m 2/m

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 Yingjiangite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.76,p1731,1991) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Yingjiangite :
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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Yingjiangite

(K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O)
Dana No: 42.06.12.01 Strunz No: 08.EC.10
Locality:

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