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Cassedanneite

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Formula:
Pb5(CrO4)2(VO4)2 · H2O
System:
Monoclinic
Colour:
Orange-red
Lustre:
Resinous
Hardness:
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, Brasil.
This page provides mineralogical data about Cassedanneite.

Classification of Cassedanneite

Approved 1984
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
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Type Occurrence of Cassedanneite

Physical Properties of Cassedanneite

Resinous
Colour:
Orange-red
Hardness (Mohs):

Crystallography of Cassedanneite

Crystal System:
Monoclinic
Cell Parameters:
a = 7.69Å, b = 5.76Å, c = 9.79Å
β = 115.93°
Ratio:
a:b:c = 1.335 : 1 : 1.7
Unit Cell Volume:
V 389.99 ų (Calculated from Unit Cell)

Chemical Properties of Cassedanneite

Formula:
Pb5(CrO4)2(VO4)2 · H2O
Essential elements:
All elements listed in formula:
Common Impurities:
Cu,Zn,P

Relationship of Cassedanneite to other Species

7.FC.05VauquelinitePb2Cu(CrO4)(PO4)(OH)
7.FC.10FornacitePb2Cu(CrO4)(AsO4)(OH)
7.FC.10MolybdofornacitePb2Cu(MoO4,CrO4)(AsO4,PO4)(OH)
7.FC.15HemihedritePb10Zn(CrO4)6(SiO4)2(F,OH)2
7.FC.15IranitePb10Cu(CrO4)6(SiO4)2(OH)2
7.FC.20EmbreyitePb5(CrO4)2(PO4)2 · H2O
22.5.1VauquelinitePb2Cu(CrO4)(PO4)(OH)
22.5.2EmbreyitePb5(CrO4)2(PO4)2 · H2O
22.5.4FornacitePb2Cu(CrO4)(AsO4)(OH)
22.5.5MolybdofornacitePb2Cu(MoO4,CrO4)(AsO4,PO4)(OH)
22.5.6Mendozavilite-NaFe[Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe33+O35(OH)2]
22.5.7Paramendozavilite[KAl4(H2O)30][Mo12P6Fe63+O60(OH)13]
22.5.8Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo86+As25+Fe33+O36(OH)]
22.5.9Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo86+As25+Fe33+O34(OH)3]
22.5.10Obradovicite-KCu[K2(H2O)17Cu(H2O)6][Mo8As2Fe33+O34(OH)3]
22.5.11Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe33+O36(OH)]
22.5.12RankachiteCa0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2O
22.5.13OlmsteaditeKFe22+(Nb5+,Ta5+)(PO4)2O2 · 2H2O
22.5.14JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)

Other Names for Cassedanneite

Name in Other Languages:

Other Information

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 Cassedanneite

Reference List:
American Mineralogist: 73: 1493.

Cesbron, Fabien, 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.

Internet Links for Cassedanneite

Localities for Cassedanneite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia (TL)
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Berezovskii (Berezovskii Zavod)
Am Min 73:11-12 p 1493
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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