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Vladkrivovichevite

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Formula:
[Pb32O18][Pb4Mn2O]Cl14(BO3)8·2H2O
Colour:
pale greenish yellow
Lustre:
Adamantine
Specific Gravity:
7.40 (Calculated)
Crystal System:
Orthorhombic
Name:
In honour of Prof. Dr Vladimir Gerasimovich Krivovichev (b. 24 April 1946), Head of the Department of Mineralogy, Geological Faculty, St Petersburg State University.
Very complex oxyhalide.


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Classification of VladkrivovicheviteHide

Approved
Approval Year:
2011

Physical Properties of VladkrivovicheviteHide

Adamantine
Colour:
pale greenish yellow
Streak:
white
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Conchoidal
Density:
7.40 g/cm3 (Calculated)

Chemical Properties of VladkrivovicheviteHide

Formula:
[Pb32O18][Pb4Mn2O]Cl14(BO3)8·2H2O
IMA Formula:
[Pb32O18][Pb4Mn2O]Cl14(BO3)8 · 2H2O

Crystallography of VladkrivovicheviteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmmn
Setting:
Pmmn
Cell Parameters:
a = 12.759(1) Å, b = 27.169(4) Å, c = 11.515(1) Å
Ratio:
a:b:c = 0.47 : 1 : 0.424
Unit Cell V:
3,991.67 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.707(49)
2.860(100)
2.733(84)
2.075(32)
1.677(20)
1.648(23)
1.601(32)
1.595(28)

Type Occurrence of VladkrivovicheviteHide

General Appearance of Type Material:
as grains <0.1 mm in size within the granular groundmass
Place of Conservation of Type Material:
Natural History Museum in London,catalogue number BM2010, 101
Geological Setting of Type Material:
late-stage products of hydrothermal reworking of primary sulfide minerals
Associated Minerals at Type Locality:

Synonyms of VladkrivovicheviteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hereroite1 photo of Vladkrivovichevite associated with Hereroite on mindat.org.
Asisite1 photo of Vladkrivovichevite associated with Asisite on mindat.org.
Kombatite1 photo of Vladkrivovichevite associated with Kombatite on mindat.org.
Sahlinite1 photo of Vladkrivovichevite associated with Sahlinite on mindat.org.
Barysilite1 photo of Vladkrivovichevite associated with Barysilite on mindat.org.

Other InformationHide

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

References for VladkrivovicheviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
O. Siidra & S. Krivovichev (2011): Fascinating structural and topological complexity of oxocentered units in divalent lead natural and synthetic oxyhalides. Oral presentation at Joint Meeting of the DGK, DMG and ÖMG, Salzburg, Austria, September 20-24, 2011.
Siidra, O.I., Turner, R.W., Krivovichev, S.V., Rumsey, M.S., Stanley, C.J. and Spratt, J. (2011): Vladkrivovichevite, IMA 2011-020. CNMNC Newsletter No. 10, October 2011, page 2553.
Turner, R., Siidra, O.I., Rumsey, M.S., Krivovichev, S.V., Stanley, C.J., and Spratt, J. (2012): Hereroite and Vladkrivovichevite: two novel lead oxychlorides from the Kombat mine, Namibia. Mineralogical Magazine 76, 883-890.
Siidra, O. I., Krivovichev, S. V., Turner, R. W., Rumsey, M. S., & Spratt, J. (2013). Crystal chemistry of layered Pb oxychloride minerals with PbO-related structures: Part II. Crystal structure of vladkrivovichevite,[Pb32O18][Pb4Mn2O] Cl14 (BO3) 8· 2H2O. American Mineralogist, 98(1), 256-261.

Internet Links for VladkrivovicheviteHide

Localities for VladkrivovicheviteHide

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.
Namibia (TL)
 
  • Otjozondjupa Region
    • Grootfontein District
      • Kombat
Siidra, O.I., Turner, R.W., Krivovichev, S.V., Rumsey, M.S., Stanley, C.J. and Spratt, J. (2011): Vladkrivovichevite, IMA 2011-020. CNMNC Newsletter No. 10, October 2011, page 2553
Mineral and/or Locality  
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