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Cassedanneite

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Formula:
Pb5(CrO4)2(VO4)2 · H2O
Colour:
Orange-red
Lustre:
Resinous
Hardness:
Specific Gravity:
6.37
Crystal System:
Monoclinic
Name:
Named in 1988 by Fabien P. Cesbron, R. Giraud, F. Pillard, J. F. Poullen in honor of Jacques P. Cassedanne [b. September 11, 1928] professor of mineralogy of the University of Rio de Janeiro, Brazil.
This page provides mineralogical data about Cassedanneite.


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Classification of CassedanneiteHide

Approved
Approval Year:
1984
First Published:
1988
7.FC.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
F : Chromates
C : With PO4, AsO4, SiO4
43.3.2.2

43 : COMPOUND PHOSPHATES, ETC.
3 : Hydrated Normal Compound Phosphates, etc·
22.5.3

22 : Phosphates, Arsenates or Vanadates with other Anions
5 : Phosphates, arsenates or vanadates with chromate, molybdate, niobate or tantalate

Physical Properties of CassedanneiteHide

Resinous
Transparency:
Translucent
Colour:
Orange-red
Streak:
Yellow-orange
Hardness:
3½ on Mohs scale
Density:
6.37 g/cm3 (Measured)    6.52 g/cm3 (Calculated)

Chemical Properties of CassedanneiteHide

Formula:
Pb5(CrO4)2(VO4)2 · H2O
IMA Formula:
Pb5(VO4)2(CrO4)2 · H2O
Common Impurities:
Cu,Zn,P

Crystallography of CassedanneiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.69 Å, b = 5.76 Å, c = 9.79 Å
β = 115.93°
Ratio:
a:b:c = 1.335 : 1 : 1.7
Unit Cell V:
389.99 ų (Calculated from Unit Cell)
Morphology:
Platy on {O1O}.
Twinning:
Plates are hexagonal in outline due to twinning.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.83 (60)
3.15 (100)
3.22 (60)
2.873 (50)
2.825 (30)
2.123 (30)
1.908 (30)

Type Occurrence of CassedanneiteHide

General Appearance of Type Material:
Round aggregates of small crystals.
Place of Conservation of Type Material:
National School of Mines, Paris, France, 16569.
Geological Setting of Type Material:
Oxidized zone of gold-bearing quartz veins.
Associated Minerals at Type Locality:

Synonyms of CassedanneiteHide

Other Language Names for CassedanneiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Leadhillite12 photos of Cassedanneite associated with Leadhillite on mindat.org.
Lanarkite12 photos of Cassedanneite associated with Lanarkite on mindat.org.
Cerussite12 photos of Cassedanneite associated with Cerussite on mindat.org.
Crocoite1 photo of Cassedanneite associated with Crocoite on mindat.org.
Vauquelinite1 photo of Cassedanneite associated with Vauquelinite on mindat.org.
Pyromorphite1 photo of Cassedanneite associated with Pyromorphite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.FC.05VauquelinitePb2Cu(CrO4)(PO4)(OH)Mon. 2/m
7.FC.10FornacitePb2Cu(CrO4)(AsO4)(OH)Mon. 2/m : P21/b
7.FC.10MolybdofornacitePb2Cu(MoO4,CrO4)(AsO4,PO4)(OH)Mon.
7.FC.15HemihedritePb10Zn(CrO4)6(SiO4)2(OH)2Tric.
7.FC.15IranitePb10Cu(CrO4)6(SiO4)2(OH)2Tric.
7.FC.20EmbreyitePb5(CrO4)2(PO4)2 · H2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide

43.3.2.1EmbreyitePb5(CrO4)2(PO4)2 · H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.5.1VauquelinitePb2Cu(CrO4)(PO4)(OH)Mon. 2/m
22.5.2EmbreyitePb5(CrO4)2(PO4)2 · H2OMon.
22.5.4FornacitePb2Cu(CrO4)(AsO4)(OH)Mon. 2/m : P21/b
22.5.5MolybdofornacitePb2Cu(MoO4,CrO4)(AsO4,PO4)(OH)Mon.
22.5.6Mendozavilite-NaFe[Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2]Mon. 2/m : B2/m
22.5.7ParamendozaviliteNaAl4Fe7(PO4)5(PMo12O40)(OH)16 · 56H2OMon.
22.5.8Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]Mon. 2/m : B2/m
22.5.9Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
22.5.10Obradovicite-KCu[K2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3]Orth. mmm (2/m 2/m 2/m) : Pmna
22.5.11Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]Mon. 2/m : B2/m
22.5.12RankachiteCa0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2OMon. 2/m : P21/m
22.5.13OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
22.5.14JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.

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 CassedanneiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cesbron, F., Giraud, R., Pillard, F., Poullen, J.F. (1988) Le cassedanneite, nouveau chromo-vanadate de plomb de Beresovsk (Oural). Comptes Rendus de l'Academie des Sciences, Paris, Series II: 306(2): 125-127.
Jambor, J.L., Burke, E.A.J., Ercit, T.S., Grice, J.D. (1988) New mineral names. American Mineralogist: 73: 1492-1499.

Internet Links for CassedanneiteHide

Localities for CassedanneiteHide

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.
Russia (TL)
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Berezovskii (Berezovskii Zavod)
Am Min 73:11-12 p 1493
South Africa
 
  • Mpumalanga Province
    • Nkangala District
      • Delmas
Atanasova, M., Cairncross, B. and Windisch, W.R. (2016) Microminerals of the Bushveld Complex, South Africa. Popular Geoscience Series 6, Council for Geoscience, Pretoria, South Africa, 435 pp
UK
 
  • Scotland
    • Strathclyde
      • South Lanarkshire
        • Leadhills
          • Mine Hill
S.Rust collection
          • Wanlock Dod
UKJMM 26:29-30
Mineral and/or Locality  
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