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Przhevalskite

A valid IMA mineral species - grandfathered - questionable
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00176730017118414859710.jpg
Przhevalskite

Dzherkamar uranium deposit, Adrasmon, Ghafurov District, Sughd, Tajikistan
00176730017118414859710.jpg
Przhevalskite

Dzherkamar uranium deposit, Adrasmon, Ghafurov District, Sughd, Tajikistan
05147990017055177109037.jpg
Przhevalskite

Dzherkamar uranium deposit, Adrasmon, Ghafurov District, Sughd, Tajikistan
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About PrzhevalskiteHide

03573840015232244513812.jpg
Nikolai M. Przhevalsky
Formula:
Pb2(UO2)3(PO4)2(OH)4 · 3H2O
Colour:
Light yellow, light green
Lustre:
Adamantine, Vitreous, Pearly
Hardness:
2 - 3
Specific Gravity:
3.38 (Calculated)
Crystal System:
Tetragonal
Name:
Named in honor of Nikolai Mikhailovich Przhevalsky (Николай Михайлович Пржевальский) (31 March (12 April) 1839, Kimborovo, Smolensk, Russian Empire - 20 October (1 November) 1888, Karakol, Semirechye, Russian Empire), geographer, naturalist, and explorer of Central Asia.
Modern reinvestigation needed.




Unique IdentifiersHide

Mindat ID:
3295
Long-form identifier:
mindat:1:1:3295:3
GUID
(UUID V4):
b9fb4032-bb60-4956-97b5-285e4718382d

IMA Classification of PrzhevalskiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Pb(UO2)2(PO4)2 · 4H2O
Type description reference:
Chervet, J., Branche, G. (1955) Contribution a l'étude des mineraux secondaires d'uranium français. Prjevalskite. Sciences de la Terre: 3: 178-178.

Classification of PrzhevalskiteHide

Strunz-mindat (2024):
8.EB.10

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 8th ed.:
40.2a.21.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:
19.11.39

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

Physical Properties of PrzhevalskiteHide

Lustre:
Adamantine, Vitreous, Pearly
Transparency:
Translucent
Colour:
Light yellow, light green
Hardness:
2 - 3 on Mohs scale
Cleavage:
Distinct/Good
{001}, good.
Density:
3.38 g/cm3 (Calculated)

Optical Data of PrzhevalskiteHide

Type:
Biaxial (-)
RI values:
nα = 1.739 nβ = 1.749(2) nγ = 1.752(2)
2V:
Measured: 30° , Calculated: 56°
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v moderate
Pleochroism:
Visible
Comments:
X = colorless; Y = pale yellow; Z = deep yellow.

Chemistry of PrzhevalskiteHide

Mindat Formula:
Pb2(UO2)3(PO4)2(OH)4 · 3H2O
Elements listed:
H, O, P, Pb, U - search for minerals with similar chemistry

Crystallography of PrzhevalskiteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 7.24 Å, c = 18.22 Å
Ratio:
a:c = 1 : 2.517
Unit Cell V:
955.05 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: n.d.; Space Group: n.d

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.610 Å(10)
9.080 Å(9)
1.619 Å(6)
1.530 Å(6)
9.490 Å(5)
2.629 Å(5)
1.960 Å(5)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
47f : [Uranyl (U⁶⁺) minerals]

Type Occurrence of PrzhevalskiteHide

Type Locality:
ⓘ Dzherkamar uranium deposit, Adrasmon (Adrasman), Ghafurov District, Sughd, Tajikistan
General Appearance of Type Material:
Crystals are tabular, to 1 mm
Geological Setting of Type Material:
secondary mineral in the oxidized zone of a uranium deposit.
Associated Minerals at Type Locality:
TorberniteAutuniteDumontiteDewindtiteDewindtite
Wulfenite
Reference:
Chervet, J., Branche, G. (1955) Contribution a l'étude des mineraux secondaires d'uranium français. Prjevalskite. Sciences de la Terre: 3: 178-178.

Other Language Names for PrzhevalskiteHide

Related Minerals - Strunz-mindat GroupingHide

8.EB.Meta-autunite GroupA1-2(UO2)2(TO4)2 · 5-10H2O
8.EB.05AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.05TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
8.EB.05UranospiniteCa(UO2)2(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.05Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.
8.EB.05ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.05NováčekiteMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
8.EB.10BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.10LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon. 2/m
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10MetauranocirciteBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
8.EB.10MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OMon. 2 : P21
8.EB.10MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
8.EB.10MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15NatrouranospiniteNa2(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Uramarsite(NH4)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
8.EB.20ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
8.EB.20ChistyakovaiteAl(UO2)2(AsO4)2(F,OH) · 6.5H2OMon.
8.EB.25ArsenuranospathiteAl(UO2)2(AsO4)2F · 20H2OOrth. mm2 : Pnn2
8.EB.25Uranospathite(Al,◻)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
8.EB.30Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.
8.EB.35CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
8.EB.40RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
8.EB.45TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
8.EB.50FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
8.EB.55SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
8.EB.60Horákite(Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2OMon. 2/m : B2/b

Other InformationHide

Notes:
radioactive
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for PrzhevalskiteHide

References for PrzhevalskiteHide

Localities for PrzhevalskiteHide

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
 
  • Hunan
    • Hengyang
      • Changning Co.
        • Shuikoushan ore field
National Geological Archives of China ...
Tajikistan (TL)
 
  • Sughd
    • Ghafurov District
      • Adrasmon (Adrasman)
Гецева et al. (1956) +3 other references
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