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Vladimirite

A valid IMA mineral species - grandfathered
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04925900014947089046958.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
05773600014947089117425.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
05026140015109787945857.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
01891460014960827233953.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
00897520014946717704452.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
03020160014947940947624.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
05851880014947089042694.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
05773600014947089117425.jpg
Vladimirite

Ightem Mine, Ightem, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
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About VladimiriteHide

Formula:
Ca4(AsO4)2(AsO3OH) · 4H2O
Colour:
Usually colorless to white, also pale rose
Lustre:
Sub-Vitreous, Silky, Pearly
Hardness:
3½
Specific Gravity:
3.12 - 3.15
Crystal System:
Monoclinic
Name:
Named by E. I. Nefedov in 1953 after its discovery locality, Vladimirskoe deposit, Khovu-Aksy, Tuva Republic, Russia.
The originally proposed formula Ca5(AsO4)2(HAsO4)2.5H2O was revised by the work of Yang et al. (2011).

A triclinic compound with the formula Ca5(AsO4)2(HAsO4)2.5H2O was obtained by dehydration of ferrarisite (Catti & Ivaldi, 1981).


Unique IdentifiersHide

Mindat ID:
4195
Long-form identifier:
mindat:1:1:4195:5
GUID
(UUID V4):
70668c71-c73d-4525-b9cc-b59b959ea0ee

IMA Classification of VladimiriteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1953

Classification of VladimiriteHide

Strunz-mindat (2024):
8.CJ.25

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
Dana 8th ed.:
39.2.2.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
Hey's CIM Ref.:
20.2.10

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba

Mineral SymbolsHide

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

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

Physical Properties of VladimiriteHide

Lustre:
Sub-Vitreous, Silky, Pearly
Transparency:
Transparent, Translucent
Colour:
Usually colorless to white, also pale rose
Streak:
White
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Density:
3.12 - 3.15 g/cm3 (Measured)    3.17 g/cm3 (Calculated)

Optical Data of VladimiriteHide

Type:
Biaxial (-)
RI values:
nα = 1.650 - 1.651 nβ = 1.654 - 1.656 nγ = 1.656 - 1.661
2V:
Measured: 70° , Calculated: 76° to 84°
Birefringence:
0.008
Max Birefringence:
δ = 0.006 - 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong
Optical Extinction:
Z ^ c = 37°
Pleochroism:
Non-pleochroic

Chemistry of VladimiriteHide

Mindat Formula:
Ca4(AsO4)2(AsO3OH) · 4H2O
Elements listed:
As, Ca, H, O - search for minerals with similar chemistry

Crystallography of VladimiriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 5.81 Å, b = 10.19 Å, c = 22.7 Å
β = 97.32°
Ratio:
a:b:c = 0.57 : 1 : 2.228
Unit Cell V:
1,332.98 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Acicular to bladed crystals in open radial clusters.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018559VladimiriteYang H, Evans S H, Downs R T, Jenkins R A (2011) The crystal structure of vladimirite, with a revised chemical formula, Ca4(AsO4)2(AsO3OH)*4H2O The Canadian Mineralogist 49 1055-10642011Corbriza mine, Copiapo, Chile0293
0018560VladimiriteYang H, Evans S H, Downs R T, Jenkins R A (2011) The crystal structure of vladimirite, with a revised chemical formula, Ca4(AsO4)2(AsO3OH)*4H2O The Canadian Mineralogist 49 1055-10642011Ait Ahmane vein No. 53, Bou Azzer district, Morroco0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.09 Å(40)
4.80 Å(40)
4.15 Å(80)
4.00 Å(80)
3.28 Å(80)
3.20 Å(40)
3.04 Å(60)
2.79 Å(100)
Comments:
ICDD 17-162

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Stage 10b: Anthropogenic minerals<10 Ka
55 : Anthropogenic mine minerals

Type Occurrence of VladimiriteHide

Co-Type Localities:
ⓘ Vladimirovskoye Co Deposit, Altai Republic, Russia
ⓘ Khovu-Aksy Ni-Co deposit, Chedi-Kholsky District, Tuva, Russia
General Appearance of Type Material:
Acicular, radial aggregates.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia, number 57263 (type).
Mining Museum, St. Petersburg, Russia, number 1220/1 (type).

Other Language Names for VladimiriteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
12 photos of Vladimirite associated with TalmessiteCa2Mg(AsO4)2 · 2H2O
10 photos of Vladimirite associated with CalciteCaCO3
7 photos of Vladimirite associated with IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2O
7 photos of Vladimirite associated with ErythriteCo3(AsO4)2 · 8H2O
6 photos of Vladimirite associated with SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2O
6 photos of Vladimirite associated with HörnesiteMg3(AsO4)2 · 8H2O
1 photo of Vladimirite associated with SkutteruditeCoAs3
1 photo of Vladimirite associated with SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2O
1 photo of Vladimirite associated with PharmacoliteCa(HAsO4) · 2H2O

Related Minerals - Strunz-mindat GroupingHide

8.CJ.SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
8.CJ.CaesiumpharmacosideriteCsFe4[(AsO4)3(OH)4] · 4H2OIso. 4 3m : P4 3m
8.CJ.JeankempiteCa5(AsO4)2(HAsO4)2 · 7H2OTric. 1 : P1
8.CJ.AirditeSr(V4+O)2(PO4)2 · 4H2OMon. m : Bb
8.CJ.DobšináiteCa2Ca(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CJ.05Stercorite(NH4)Na(PO3OH) · 4H2OTric. 1 : P1
8.CJ.10Mundrabillaite(NH4)2Ca(PO3OH)2 · H2OMon. m : Pm
8.CJ.10Swaknoite(NH4)2Ca(PO3OH)2 · H2OOrth.
8.CJ.15NabaphiteNaBaPO4 · 9H2OIso. 2 3 : P21 3
8.CJ.15NastrophiteNa(Sr,Ba)PO4 · 9H2OIso. 2 3 : P21 3
8.CJ.20HaidingeriteCaHAsO4 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
8.CJ.25Rhabdophane-(Y)YPO4 · H2OHex. 6 2 2 : P62 2 2
8.CJ.27Churchite-(Dy)(Dy,Sm,Gd,Nd)PO4 · 2H2OMon.
8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OTrig. 3m : R3c
8.CJ.35FulbrightiteCa(VO)2(AsO4)2 · 4H2OTric. 1 : P1
8.CJ.40PhaunouxiteCa3(AsO4)2 · 11H2OTric.
8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Ce)Ce(PO4) · 0.6H2OTrig. 3 2 : P31 2 1
8.CJ.45Rhabdophane-(La)La(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Nd)Nd(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2OHex. 6 2 2 : P62 2 2
8.CJ.45Smirnovskite(Th,Ca)PO4 · nH2OHex. 6 2 2 : P62 2 2
8.CJ.45ŠtěpiteU(AsO3OH)2 · 4H2O Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
8.CJ.47VysokýiteU4+[AsO2(OH)2]4 · 4H2OTric. 1 : P1
8.CJ.50ArdealiteCa2(PO3OH)(SO4) · 4H2OMon. m : Bb
8.CJ.50BrushiteCa(PO3OH) · 2H2OMon. m : Bb
8.CJ.50Churchite-(Y)Y(PO4) · 2H2OMon. 2/m : B2/b
8.CJ.50PharmacoliteCa(HAsO4) · 2H2OMon. m
8.CJ.50Churchite-(Nd)Nd(PO4) · 2H2OMon.
8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
8.CJ.60DorfmaniteNa2(PO3OH) · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CJ.65SincositeCa(VO)2(PO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P42/nnm
8.CJ.65BariosincositeBa(VO)2(PO4)2 · 4H2OTet.
8.CJ.70CatalanoiteNa2(PO3OH) · 8H2OOrth. mmm (2/m 2/m 2/m) : Ibca
8.CJ.75GuériniteCa6(HAsO4)3(AsO4)2 · 10.5H2OMon. 2/m : P21/b
8.CJ.85Ningyoite(U,Ca,Ce)2(PO4)2 · 1-2H2OOrth.

Fluorescence of VladimiriteHide

In UV light:
Not fluorescent

Other InformationHide

Thermal Behaviour:
Fusible with difficulty.
Notes:
Soluble in acids.
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 VladimiriteHide

References for VladimiriteHide

Localities for VladimiriteHide

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.
Chile
 
  • Atacama
    • Copiapó Province
      • Tierra Amarilla
        • Pabellón
          • Chinchado-Sacramento mining district
Yang et al. (2011)
Germany
 
  • Hesse
    • Kassel Region
      • Hersfeld-Rotenburg
        • Nentershausen
          • Süß
            • Richelsdorf Smelter
Weiß (1990)
Weiß (1990)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Plaka
            • Plaka Mines
Kolitsch et al. (2014)
Fritz Schreiber collection
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Amerzgane Cercle
        • Ouisselsate Caïdat
          • Méchoui
JP Barral collection
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
          • Aït Ahmane
Favreau et al. (2006)
Favreau et al. (2006)
Favreau et al. (2006) +1 other reference
Favreau et al. (2006)
          • Ightem
Yakhontova L K (1970) +1 other reference
Russia (TL)
 
  • Altai Republic
Pekov (1998)
  • Tuva
    • Chedi-Kholsky District
Yakhontova L K (1970) +1 other reference
USA
 
  • Michigan
    • Keweenaw County
      • Allouez Township
        • Mohawk
[Mineralogical Record - Vol 23 No. 2]
  • Nevada
    • Nye County
      • Toquima Range
        • Manhattan Mining District
          • Manhattan
Tony Nikischer specimen and analysis
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