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Yingjiangite

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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).


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Classification of YingjiangiteHide

Approved
Approval Year:
1989
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

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

Chemical Properties of YingjiangiteHide

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 (100)
5.90 (40)
3.99 (90)
3.88 (40)
3.45 (40)
3.17 (70)
3.10 (70)
2.886 (60)

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:
BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b
DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Related Minerals - Nickel-Strunz GroupingHide

8.EC.05Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon.
8.EC.05PhuralumiteAl2(UO2)3(PO4)3(OH)2 · 13H2OMon.
8.EC.05UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon.
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.
8.EC.10DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
8.EC.10Kivuite(Th,Ca,Pb)(UO2)4(HPO4)2(OH)8 · 7H2O
8.EC.10Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
8.EC.15DumontitePb2(UO2)3(PO4)2(OH)4 · 3H2OMon. 2/m : P21/m
8.EC.15HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon.
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.
8.EC.20ArsenovanmeersscheiteU4+(UO2)3(AsO4)2(OH)2 · 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.
8.EC.40BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.11.1LermontoviteU(PO4)(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Ccca
19.11.2MetavanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Fddd
19.11.3VanmeersscheiteU6+(UO2)3(PO4)2(OH)6 · 4H2OOrth.
19.11.4Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet.
19.11.5VyacheslaviteU(PO4)(OH) · nH2OOrth.
19.11.6MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
19.11.8Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
19.11.9Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet.
19.11.10TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
19.11.11MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
19.11.12SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
19.11.13NingyoiteCaU(PO4)2 · 1-2H2OOrth.
19.11.14Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
19.11.15AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
19.11.16Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
19.11.17PhurcaliteCa2(UO2)3(PO4)2O2 · 7H2OOrth.
19.11.18Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
19.11.19UlrichiteCaCu(UO2)(PO4)2 · 4H2OMon.
19.11.20BergeniteCa2Ba4(UO2)9(PO4)6O6 · 16H2OMon. 2/m : P21/b
19.11.21Metauranocircite-IBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
19.11.22UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
19.11.23RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
19.11.24TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
19.11.25MunditeAl(UO2)3(PO4)2(OH)3 · 5.5H2OOrth.
19.11.26UpaliteAl(UO2)3(PO4)2O(OH) · 7H2OMon.
19.11.27FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
19.11.28ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
19.11.29PhuralumiteAl2(UO2)3(PO4)3(OH)2 · 13H2OMon.
19.11.30MoreauiteAl3(UO2)(PO4)3(OH)2 · 13H2O
19.11.31SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
19.11.32Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
19.11.33AlthupiteAlTh(UO2)7(PO4)4(OH)5O2 · 15H2OTric. 1 : P1
19.11.34Françoisite-(Nd)(Nd,Ce,Sm)(UO2)3(PO4)2O(OH) · 6H2OMon.
19.11.35Kivuite(Th,Ca,Pb)(UO2)4(HPO4)2(OH)8 · 7H2O
19.11.36ParsonsitePb2(UO2)(PO4)2Tric. 1 : P1
19.11.37DewindtiteH2Pb3(UO2)2(PO4)4O4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmma
19.11.38DumontitePb2(UO2)3(PO4)2(OH)4 · 3H2OMon. 2/m : P21/m
19.11.39PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OOrth.
19.11.40LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon.
19.11.41BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
19.11.42Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.

Fluorescence of YingjiangiteHide

weak yellowish green under SW UV

Other InformationHide

Health Risks:
Radioactive

References for YingjiangiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chen Zhangru, Huang Yuzhu, and Gu Xiaofa (1990): A new uranium mineral - Yingjiangite. Acta Mineralogica Sinica 10(2), 102-105 (in Chinese with English abstract). - American Mineralogist (1991), 76, 1731 (abstract).
Zhang Jingyi, Wan Anwa, and Gong Wenshu (1992): New data on yingjiangite. Yanshi Kuangwuxue Zazhi [Acta Petrologica et Mineralogica] 11(2), 178-184 (in Chinese with English abstract). - New Minerals 1990-1994, 214 (abstract); American Mineralogist (1994), 79, 1214 (abstract).
Coutinho, J. M. V. and Atencio, D. (2000): Phosphuranylite from Minas Gerais, Brazil and its identity with yiangjiangite. M&M4, 4th Intern. Conf. on Mineralogy & Museums, Melbourne, December 4-7, 2000; Program and Abstract Volume, 35.
Frost, R. L., J. Cejka, and G. Ayoko (2008): Raman spectroscopic study of the uranyl phosphate minerals phosphuranylite and yingjiangite. Journal of Raman Spectroscopy 39, 495-502.
Plášil, J., Sejkora, J., Cejka, J., Škoda, R., Goliáš, V. (2009): Supergene mineralization of the Medvedín uranium deposit, Krkonoše Mountains, Czech Republic. Journal of Geosciences, 54, 15-56.

Internet Links 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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Guangdong Province
    • Shaoguan Prefecture
      • Wengyuan Co.
Jingyi Zhang, Anwa Wan, and Wenshu Gong (1992): Acta Petrologica et Mineralogica 11(2), 178-184; Long Lu, Fanrong Chen, R.C. Ewing, and Rucheng Wang (2007): Radiochimica Acta 95(1), 25-32.
  • Yunnan Province
    • Dehong Autonomous Prefecture
      • Yingjiang Co.
        • Tongbiguan
Chen Zhangru, Huang Yuzhu, and Gu Xiaofa (1990): A new uranium mineral - Yingjiangite. Acta Mineralogica Sinica 10(2), 102-105.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
      • Mariánské Lázně (Marienbad)
Jakub Plasil information 2013, microprobe on 3 different crystals; Bernard & Hyrsl (2004) Minerals and their Localities, p 670.
Germany
 
  • Saxony
    • Erzgebirge
      • Johanngeorgenstadt District
        • Johanngeorgenstadt
Gröbner, J., Grimm, O. & Zienau, H. (2005): Neufunde interessanter Wismut- und Uranmineralien am Schaarschacht, Johanngeorgenstadt, Sachsen. Lapis 30 (6), 44-51; 62.
    • Vogtland
      • Oelsnitz
Gröbner, J. and Kolitsch, U. (2007): The minerals of the uranium prospect at Tirpersdorf, Vogtland. Lapis 32, 37-42; 58. (in German)
Italy
 
  • Sardinia
    • Cagliari Province
      • Capoterra
Ciriotti, M.E., Blaß, G. (2010): Pot-pourri 2009: Identificazioni UKiS AMI, Minerali italiani di interesse. Micro, 1/2010, 124-127
Switzerland
 
  • Vaud (Waadt)
    • Lavey-les-Bains
Meisser, N. (2012): La minéralogie de l'uranium dans le massif des Aiguilles Rouges. Matér. Géol. Suisse, Sér. géotech. 96, 183 p.
  • Wallis (Valais)
    • Le Trient Valley
      • Les Marécottes
XRD determination by N. Meisser (MGL Lausanne), February 2009 (in Philippe Roth's collection).
USA
 
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
        • Delta
Min News 14:7 p1
Mineral and/or Locality  
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