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Yingjiangite

A valid IMA mineral species
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About YingjiangiteHide

Formula:
K2Ca(UO2)7(PO4)4(OH)6 · 6H2O
Colour:
Yellow, golden-yellow
Lustre:
Sub-Adamantine, Sub-Vitreous, Resinous
Hardness:
3 - 4
Specific Gravity:
4.15
Crystal System:
Orthorhombic
Name:
Named in 1990 by Zhangru Chen, zuzhu Huang, and Xiaofa Gu for its discovery locality in Yingjiang County, Yunnan Province, China. Doubt was cast on the species by Coutinho, J. M. V. and Atencio, D. (2000).
Isostructural with:
Phosphuranylite Group.

Easily confused with Phosphuranylite. Possibly identical to phosphuranylite (Coutinho and Atencio, 2000; Plášil et al., 2009).


Unique IdentifiersHide

Mindat ID:
4362
Long-form identifier:
mindat:1:1:4362:1
GUID
(UUID V4):
20323d8e-3a56-42fd-b02b-a6ff6a1ea422

IMA Classification of YingjiangiteHide

Approved
Approval year:
1989

Classification of YingjiangiteHide

8.EC.10

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
C : UO2:RO4 = 3:2
42.6.12.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq·xH2O
19.11.7

19 : Phosphates
11 : Phosphates of U

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
YinIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of YingjiangiteHide

Sub-Adamantine, Sub-Vitreous, Resinous
Transparency:
Transparent, Translucent
Colour:
Yellow, golden-yellow
Streak:
Pale yellow
Hardness:
3 - 4 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Density:
4.15 g/cm3 (Measured)    4.17 g/cm3 (Calculated)

Optical Data of YingjiangiteHide

Type:
Biaxial (-)
RI values:
nα = 1.666 - 1.669 nβ = 1.692 - 1.703 nγ = 1.707 - 1.710
2V:
Measured: 36° to 38°, Calculated: 36°
Birefringence:
0.041
Max Birefringence:
δ = 0.041
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v or r < v
Optical Extinction:
Parallel
Pleochroism:
Visible
Comments:
X = almost colorless
Y = pale yellow
Z = yellow
Orientation: Length-slow

Chemistry of YingjiangiteHide

Mindat Formula:
K2Ca(UO2)7(PO4)4(OH)6 · 6H2O
Common Impurities:
Na,Mg,Mn,Fe,Ti,Si

Crystallography of YingjiangiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Cell Parameters:
a = 15.707 Å, b = 17.424 Å, c = 13.692 Å
Ratio:
a:b:c = 0.901 : 1 : 0.786
Unit Cell V:
3,747.21 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Yellow crusts and fine-grained coating, also acicular crystals <1 mm.
Comment:
Space group reported as C222[sub]1[/sub] (by analogy with phosphuranylite; cell: a = 13.73(1), b = 15.99(1), c = 17.33(2) A) and as Bmmb (cell data given on Mindat refer to this space group). The crystal structure has not been solved yet.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.03 Å(100)
5.90 Å(40)
3.99 Å(90)
3.88 Å(40)
3.45 Å(40)
3.17 Å(70)
3.10 Å(70)
2.886 Å(60)

Geological EnvironmentHide

Type Occurrence of YingjiangiteHide

General Appearance of Type Material:
granular massive
Place of Conservation of Type Material:
National Geological Museum, Beijing, China
Geological Setting of Type Material:
oxidized zone of a uranium deposit
Associated Minerals at Type Locality:

Synonyms of YingjiangiteHide

Other Language Names for YingjiangiteHide

Relationship of Yingjiangite to other SpeciesHide

Other Members of this group:
AlthupiteAlTh(UO2)7(PO4)4(OH)5O2 · 15H2OTric. 1 : P1
BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b
DewindtiteH2Pb3(UO2)6O4(PO4)4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
DumontitePb2(UO2)3O2(PO4)2 · 5H2OMon. 2/m : P21/m
Françoisite-(Ce)(Ce,Nd,Ca)(UO2)3(PO4)2O(OH) · 6H2OMon. 2/m : P21/b
Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon. 2/m
HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon. 2/m : P21/m
PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
PhuralumiteAl2[(UO2)3(PO4)2O(OH)](OH)3(H2O)9Mon. 2/m
PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2OOrth. mmm (2/m 2/m 2/m) : Pbca
UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon. 2/m : P21/b
VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth. mmm (2/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Yingjiangite associated with Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
4 photos of Yingjiangite associated with SaléeiteMg(UO2)2(PO4)2 · 10H2O
2 photos of Yingjiangite associated with BecquereliteCa(UO2)6O4(OH)6 · 8H2O
2 photos of Yingjiangite associated with PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O

Related Minerals - Strunz-mindat GroupingHide

8.EC.05Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon. 2/m
8.EC.05PhuralumiteAl2[(UO2)3(PO4)2O(OH)](OH)3(H2O)9Mon. 2/m
8.EC.05UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon. 2/m : P21/b
8.EC.05Françoisite-(Ce)(Ce,Nd,Ca)(UO2)3(PO4)2O(OH) · 6H2OMon. 2/m : P21/b
8.EC.10ArsenuranyliteCa(UO2)4(AsO4)2(OH)4 · 6H2OOrth. mmm (2/m 2/m 2/m)
8.EC.10DewindtiteH2Pb3(UO2)6O4(PO4)4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
8.EC.10KivuiteTh(UO2)4(PO3OH)2(OH)8 · 7H2O
8.EC.10PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
8.EC.10RenarditePb(UO2)4(PO4)2(OH)4 · H2OOrth.
8.EC.15DumontitePb2(UO2)3O2(PO4)2 · 5H2OMon. 2/m : P21/m
8.EC.15HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon. 2/m : P21/m
8.EC.20MetavanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Fddd
8.EC.20VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth. mmm (2/m 2/m 2/m)
8.EC.20ArsenovanmeersscheiteU6+(UO2)3(AsO4)2(OH)6 · 4H2OOrth. mm2 : Pmn21
8.EC.25AlthupiteAlTh(UO2)7(PO4)4(OH)5O2 · 15H2OTric. 1 : P1
8.EC.30MunditeAl(UO2)3(PO4)2(OH)3 · 5.5H2OOrth.
8.EC.35PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.EC.40BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b

Fluorescence of YingjiangiteHide

weak yellowish green under SW UV

Other InformationHide

Health Risks:
Radioactive

Internet Links for YingjiangiteHide

References for YingjiangiteHide

Localities for YingjiangiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Guangdong
    • Shaoguan
      • Wengyuan Co.
  • Yunnan
    • Dehong
      • Yingjiang County
        • Tongbiguan
Czech Republic
 
  • Hradec Králové Region
    • Trutnov District
      • Špindlerův Mlýn
        • Medvědín
  • Karlovy Vary Region
    • Cheb District
      • Mariánské Lázně
    • Karlovy Vary District
Germany
 
  • Saxony
    • Erzgebirgskreis
      • Johanngeorgenstadt
    • Vogtlandkreis
Italy
 
  • Sardinia
    • Metropolitan City of Cagliari
      • Capoterra
    • Sassari Province
      • Olbia
Portugal
 
  • Viseu
    • Mangualde
      • Tavares (Chãs; Várzea e Travanca)
        • Tragos
Switzerland
 
  • Valais
    • Saint-Maurice
      • Salvan
        • Les Marécottes
          • La Creusaz
  • Vaud
    • Aigle
      • Lavey-Morcles
        • Lavey-les-Bains
USA
 
  • Utah
    • Emery County
      • San Rafael Swell Mining District
 
Mineral and/or Locality  
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