Yingjiangite	IMA-A 1989-001
Uranium	42.6.12.1 (Dana Classification Number)
(No Images)	7/E.07-25 (Strunz ID)

Property	Data	Remarks
Named for:	Yingjian Co., Yunnan, China, its type locality
Alternate     Name(s):
Mineral Class:	Phosphates, Arsenates and Vanadates   Uranylphosphates and uranylvanadates with [UO2]+2 - [PO4 | AsO4]-3 and [UO2]+2 - [V2O8]-6     Phosphuranylite series
Chemical     Formula:	(K2,Ca)(UO2)7(PO4)4(OH)6 · 6H2O
Chemical     Composition:	Calcium: (Ca) 0.38% Hydrogen: (H) 0.70% Oxygen: (O) 25.77% Phosphorus: (P) 4.75% Potassium: (K) 4.50% Uranium: (U) 63.90%	by weight
Molecular     Weight:	2,607.53	daltons (amu)
Specific     Radioactivity:	(All radiation is for a 1 gram, fully aged specimen) Specific Activity Dose Rate Becquerels Curies milliRems/hour microSieverts/hour 1.14382 × 1005 3.09 × 10-06 1.54 153.83 Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
Crystalography:	System: Orthorhombic - Dipyramidal 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 System: H-M Symbol: 2/m 2/m 2/m Space Group: Bmmb X Ray Diffraction: By Intensity(I/Io): 7.89(1) 3.94(0.5) 3.15(0.29)
Habit:	0.01 to 0.015 mm grains in compact aggregates
Cleavage:	None
Fracture:
Moh's     Hardness:	3 - 4
Density:	4.15 - 4.54	grams/cm3
Color:	Yellow to Golden yellow to Golden brown
Streak:
Luster:	Subadamantine to Resinous
Diaphaneity:	Transparent to Translucent
Pleochroism:	(x): (y:) (z:)
Ultra Violet     Fluorescence:	Long Wave: weak yellowish green Short Wave: weak yellowish green
Magnetism:	Non-magnetic
Occurance:	.
Associated     Minerals:	Autunite, Uraninite Mineral   -   > 67% of sites Minerals   -   Uranium & Thorium mineral links	These are minerals known to be found with Yingjiangite
Locations:	Very rare Yingjiangite Locations
Notes:	Strongly radioactive a- and b-particles, g-rays. .