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Ianthinite

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About IanthiniteHide

Formula:
U4+(UO2)5O7 · 10H2O
Colour:
Violet-black; dark violet in transmitted light
Lustre:
Sub-Metallic
Hardness:
2 - 3
Crystal System:
Orthorhombic
Name:
From the Greek ιάνθινος ("ianthinos"), violet colored, in allusion to its color.
Not very stable under ambient conditions; will dehydrate to schoepite (while becoming yellow and opaque) and further members of the schoepite group.

May be confused with nollmotzite.

Sheets in the crystal structure are similar to those in rameauite, spriggite and wyartite.


Classification of IanthiniteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.GA.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
A : Without additional cations
Dana 7th ed.:
5.6.1.1
5.6.1.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
6 : AX6O17·xH2O
7.16.7

7 : Oxides and Hydroxides
16 : Oxides of U

Pronounciation of IanthiniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of IanthiniteHide

Sub-Metallic
Transparency:
Transparent
Colour:
Violet-black; dark violet in transmitted light
Streak:
Brown, violet
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
Perfect on {001}

Optical Data of IanthiniteHide

Type:
Biaxial (-)
RI values:
nα = 1.674 nβ = 1.900 nγ = 1.920
2V:
Measured: 58° , Calculated: 30°
Max Birefringence:
δ = 0.246
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v perceptible
Pleochroism:
Visible
Comments:
X = c = colourless
Y = b = violet
Z = a = dark violet

Chemical Properties of IanthiniteHide

Formula:
U4+(UO2)5O7 · 10H2O
IMA Formula:
U4+2(UO2)4O6(OH)4 · 9H2O

Crystallography of IanthiniteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Amm2
Cell Parameters:
a = 11.52 Å, b = 7.15 Å, c = 30.3 Å
Ratio:
a:b:c = 1.611 : 1 : 4.238
Unit Cell V:
2,495.75 ų (Calculated from Unit Cell)
Morphology:
Tiny rectangular plates {001} elongated [010]. Also prismatic [010], or thick tabular {001}.

Type Occurrence of IanthiniteHide

Synonyms of IanthiniteHide

Other Language Names for IanthiniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
8 photos of Ianthinite associated with Schoepite(UO2)8O2(OH)12 · 12H2O
2 photos of Ianthinite associated with UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
1 photo of Ianthinite associated with Umohoite(UO2)MoO4 · 2H2O
1 photo of Ianthinite associated with CuritePb3(UO2)8O8(OH)6 · 3H2O

Related Minerals - Nickel-Strunz GroupingHide

4.GA.05Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
4.GA.05ParaschoepiteUO3 · 2H2OOrth.
4.GA.05Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
4.GA.15MetastudtiteUO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
4.GA.15Studtite[(UO2)(O2)(H2O)2] · H2OMon.
4.GA.20PaulscherreriteUO2(OH)2Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.16.1UraniniteUO2Iso. m3m (4/m 3 2/m) : Fm3m
7.16.2Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
7.16.3ParaschoepiteUO3 · 2H2OOrth.
7.16.4Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
7.16.5MetastudtiteUO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.6Studtite[(UO2)(O2)(H2O)2] · H2OMon.
7.16.8CompreignaciteK2(UO2)6O4(OH)6 · 7H2OOrth.
7.16.9VandenbrandeiteCu(UO2)(OH)4Tric. 1 : P1
7.16.10RoubaultiteCu2(UO2)3(CO3)2O2(OH)2•4H2OTric. 1 : P1
7.16.11BecquereliteCa(UO2)6O4(OH)6 · 8H2OOrth. mm2 : Pna21
7.16.12RameauiteK2Ca(H[3]2O)(H[5]2O)4[(UO2)6O6(OH)4](H[4]2O)Mon. m : Bb
7.16.13AgrinieriteK2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2OOrth.
7.16.14ProtasiteBa(UO2)3O3(OH)2 · 3H2OMon.
7.16.15BillietiteBa(UO2)6O4(OH)6 · 4-8H2OOrth. mm2
7.16.16BauranoiteBa(UO2)2(OH)6 · 1-2H2O
7.16.17Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
7.16.18Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
7.16.19OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
7.16.20Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
7.16.21Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
7.16.22Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
7.16.23BranneriteUTi2O6Mon. 2/m : B2/m
7.16.24FourmarieritePb(UO2)4O3(OH)4 · 4H2OOrth.
7.16.25Richetite(Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24•41H2O Tric.
7.16.26CuritePb3(UO2)8O8(OH)6 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.27MasuyitePb(UO2)3O3(OH)2 · 3H2OOrth.
7.16.28VandendriesscheitePbU7O22 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
7.16.29MetavandendriesscheitePbU7O22 · nH2O n < 12Orth.
7.16.30SayritePb2(UO2)5O6(OH)2 · 4H2OMon. 2/m
7.16.31WölsendorfitePb7(UO2)14O19(OH)4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
7.16.32Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2OTrig.
7.16.33UranosphaeriteBi(UO2)O2(OH)Mon. 2/m

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 IanthiniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schoep (1926), Naturrw. Tijdschr.: 7: 97.
Schoep (1927), Soc. géol. Belgique, Ann.: 49: B310.
Palache, C. (1934), American Mineralogist: 19: 309.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 633-634.
American Mineralogist (1959): 44: 1103.
Burns, P.C., Finch, R.J., Hawthorne, F.C., Miller, M.L., and Ewing, R.C. (1997c) The crystal structure of ianthinite, [U 4+ 2(UO2)4O6(OH)4(H2O)4](H2O)5: a possible phase for Pu 4+ incorporation during the oxidation of spent nuclear fuel. Journal of Nuclear Mater.: 249: 199-206.
American Mineralogist: 83 (1998): 911.
Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for IanthiniteHide

Localities for IanthiniteHide

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.
Australia
 
  • Tasmania
    • Northern Midlands municipality
      • Rossarden district
Bottrill (unpub)
DR Congo (TL)
 
  • Haut-Katanga
    • Kambove District
      • Shinkolobwe
Guillemin, C., Protas, J. (1959) Ianthinite et wyartite. Bulletin de Minéralogie, 82(1-3), 80-86.; Clark (1993) "Hey's Mineral Index".; Deliens, M. (1996) Overzicht van de mineralogie van de koper-, kobalt- en uraniumvoorkomens in Zuid-Shaba (Zaïre). Pages 35-49 in: Schatten der Aarde. Van mineraal tot juweel. Tentoonstelling in de abdij Saint-Gérard de Brogne van 27 april tot 27 oktober 1996. Catalogus opgemaakt onder de leiding van R. Warin, AGAB en P. Van hee, MKA (in Dutch).
MinRec 20:287-288
Egypt
 
  • Red Sea
    • Eastern Desert
      • Central Eastern Desert
Hussein, H. A., & Bakhit, F. S. (1988). Uranium-Bearing Alkaline Volcanics of North Wadi Kariem and Surroundings, Central Eastern Desert, Egypt. Mining Geology, 38(207), 39-48.
France
 
  • Auvergne-Rhône-Alpes
    • Loire
      • Saint-Just-en-Chevalet
        • Saint-Priest-la-Prugne
Le Règne Minéral, Hors Série IV, 1998
J. Chervet et G. Branche : "Contribution à l'Etude des Minéraux Secondaires d'Uranium Français", Annales de l'Ecole Nationale Supérieure de Géologie Appliquée et de Prospection Minière de l'Université de Nancy, 1955 ; J.-J. Périchaud: "Où trouver les minéraux d'Auvergne", Vol. 1, Editions l'Instant Durable (Clermont-Ferrand), 1985, p. 92
    • Puy-de-Dôme
      • Lachaux
Le Règne Minéral, Hors Série IV (1998)
J. Geffroy, J.A. Sarcia, J. Chervet : "Les Minéraux Uranifères Français", 1960, Institut National des Sciences et Techniques Nucléaires / Saclay - PUF.
  • Bourgogne-Franche-Comté
    • Saône-et-Loire
      • Gueugnon
        • Neuvy-Grandchamp
Le Règne Minéral, Hors Série IV, 1998
  • Nouvelle-Aquitaine
    • Deux-Sèvres
      • La Chapelle Largeau
Le Cahier des micromonteurs, 2002, N°75, pp 8-25
      • Saint-Amand-sur-Sèvre
Le Cahier des micromonteurs, 2002, N°75, pp 8-25
    • Haute-Vienne
      • Compreignac
Le Règne Minéral, Hors Série IV, 1998
Le Règne Minéral, Hors Série IV (1998)
      • Saint-Sylvestre
Le Règne Minéral, Hors Série IV, 1998
  • Occitanie
    • Hérault
      • Le Puech
[Le Règne Minéral 1997, 13, p.5-18]; Bariand, P., Bachet, B., Brassy, C., Medenbach, O., Deliens, M., Vautier, R., & Piret, P. (1993) A New Uranium Mineral from the Talmessi Mine, Iran, and Rabejac, France. Mineralogical Record: 24: 463-467
      • Lodève
[Le Cahier des Micromonteurs, 1998, 2, p.13-26]
Le Règne Minéral, Hors Série IV (1998)
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Ortenaukreis
        • Oberwolfach
KOLITSCH, U. (1997): Ianthinit und weitere Neufunde aus der Grube Clara im mittleren Schwarzwald. - Erzgräber 11 (2), 76-88; WALENTA, K. (1999): Neue Mineralfunde von der Grube Clara. 8. Folge, 1. Teil. Lapis 24 (11), 34-37; Gröbner, J., Kolitsch, U. und Bayerl, R. (2005): Interessante Uranmineralien im Stinkspat der Grube Clara. Lapis 30 (10), 34-39; 90; Gröbner, J., Bayerl, R. und Kolitsch, U. (2006): Weitere Beobachtungen zu den Uran- und Vanadium-Paragenesen der Grube Clara aus den Jahren 2002, 2004 und 2005. Erzgräber 20, 1-10
      • Waldshut
        • St Blasien
          • Menzenschwand
No reference listed
  • Bavaria
    • Upper Palatinate
      • Schwandorf
        • Schwarzach bei Nabburg
          • Wölsendorf
No reference listed
      • Tirschenreuth
        • Mähring
          • Poppenreuth bei Tirschenreuth
            • Uranium deposit
Weiss, S. (1990) Mineralfundstellen Atlas, Deutschland West. Weise Verlag, München, 320 pages.
Dill, H. G., & Weber, B. (2010). Accessory minerals of fluorite and their implication regarding the environment of formation (Nabburg–Wölsendorf fluorite district, SE Germany), with special reference to fetid fluorite (“Stinkspat”). Ore Geology Reviews, 37(2), 65-86.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Plaka
            • Paliokamariza Mines (Paleokamariza Mines)
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
Italy
 
  • Sardinia
    • Metropolitan City of Cagliari
      • Capoterra
Olmi F., Sabelli C., Senesi F., Stara P., 2002. La mineralizzazione uranifera di Arcu su Linnarbu. Riv. Miner. Ital., 3: 148-169.
  • Trentino-Alto Adige
    • Trento Province (Trentino)
      • Giudicarie Valleys
        • Chiese Valley
          • Condino
Campostrini, I., Demartin, F., & Gramaccioli, C. M. (2006). Rio Giulis. Minerali secondari del giacimento uranifero presso Condino, Trento. Rivista Mineralogica Italiana, 30(3), 152-165.
Mexico
 
  • Chihuahua
    • Aldama Municipality
      • Peña Blanca District
        • Sierra Peña Blanca
http://www.swri.org/4org/d20/ghs/PBlanca/mineral.html
Slovakia
 
  • Banská Bystrica Region
    • Rimavská Sobota District
Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
  • Košice Region
    • Spišská Nová Ves District
      • Hnilčík
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Spišská Nová Ves
        • Novoveská Huta
Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
USA
 
  • Colorado
    • Gunnison Co.
      • Marshall Pass Mining District
Minerals of Colorado (1997) E.B. Eckel
    • Saguache Co.
      • Marshall Pass Mining District
Minerals of Colorado (1997) Eckel, E. B.; Am Min 50:909-923
Minerals of Colorado (1997) Eckel, E. B.
 
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