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Hereroite

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About HereroiteHide

Formula:
[Pb32(O,☐)21](AsO4)2[(Si,As,V,Mo]O4)2Cl10
Colour:
bright orange
Lustre:
Adamantine
Specific Gravity:
8.15 (Calculated)
Crystal System:
Monoclinic
Name:
Hereroite is named after the Herero people, one of the indigenous tribal groupings in the region where the Kombat mine is located.
This page provides mineralogical data about Hereroite.


Classification of HereroiteHide

Approved
Approval Year:
2011

Physical Properties of HereroiteHide

Adamantine
Transparency:
Transparent, Translucent
Colour:
bright orange
Streak:
white
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Conchoidal
Density:
8.15 g/cm3 (Calculated)

Chemical Properties of HereroiteHide

Formula:
[Pb32(O,☐)21](AsO4)2[(Si,As,V,Mo]O4)2Cl10
IMA Formula:
[Pb32(O,◻)21](AsO4)2[(Si,As,V,Mo)O4]2Cl10

Crystallography of HereroiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 23.139(4) Å, b = 22.684(4) Å, c = 12.389(2) Å
β = 102.090(3)°
Ratio:
a:b:c = 1.02 : 1 : 0.546
Unit Cell V:
6,358.57 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.901(21)
3.516(23)
2.982(100)
2.837(47)
1.986(24)
1.758(14)
1.641(24)
1.598(12)

Type Occurrence of HereroiteHide

General Appearance of Type Material:
intergrown glassy orange grains. The individual grains are generally <1 mm in size and they form aggregates up to ~3 mm
Place of Conservation of Type Material:
Natural History Museum in London,catalogue number BM2010,101
Geological Setting of Type Material:
hydrothermal deposit that has undergone oxidation
Associated Minerals at Type Locality:

Synonyms of HereroiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Vladkrivovichevite1 photo of Hereroite associated with Vladkrivovichevite on mindat.org.
Asisite1 photo of Hereroite associated with Asisite on mindat.org.
Kombatite1 photo of Hereroite associated with Kombatite on mindat.org.
Sahlinite1 photo of Hereroite associated with Sahlinite on mindat.org.
Barysilite1 photo of Hereroite 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 HereroiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Turner, R.W., Siidra, O.I., Rumsey, M.S., Krivovichev, S.V., Stanley, C.J. and Spratt, J. (2011): Hereroite, IMA 2011-027. CNMNC Newsletter No. 10, October 2011, page 2554.
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.

Internet Links for HereroiteHide

Localities for HereroiteHide

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
Turner, R.W., Siidra, O.I., Rumsey, M.S., Krivovichev, S.V., Stanley, C.J. and Spratt, J. (2011): Hereroite, IMA 2011-027. CNMNC Newsletter No. 10, October 2011, page 2554
Mineral and/or Locality  
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