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Nováčekite-I

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Radim Nováček
Formula:
Mg(UO2)2(AsO4)2 · 12H2O
Colour:
Light yellow
Lustre:
Vitreous
Hardness:
Crystal System:
Triclinic
Member of:
Autunite Group.

Note: the use of the name nováčekite is inconsistent in the literature. There are two differently hydrated species (Walenta, 1964), one with 12 water molecules (nováčekite = nováčekite-I), the other with 10 water molecules (nováčekite-II). A further, still less hydrated species is metanováčekite.

Both nováčekite-I and nováčekite-II are grandfathered species. Their crystal structures have been solved by Locock et al. (2004); nováčekite-I is triclinic (P-1), with a 7.1594(5) Å, b 7.1610(5) Å, c 11.3146(7) Å, α 81.391(2)°, β 81.177(1)°, γ 88.884(1)°, while nováčekite-II is monoclinic (P21/n), with a 7.1328(11) Å, b 20.085(3) Å, c 7.1569(11) Å, β 90.585(3)°.

Nováčekite-I is very unstable under ambient conditions and quickly dehydrates to nováčekite-II, in part also to metanováčekite.
Most "nováčekite" specimens in collections seem to be either nováčekite-II or metanováčekite.




Hide all sections | Show all sections

Classification of Nováčekite-IHide

Approved, 'Grandfathered' (first described prior to 1959)
8.EB.05

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
40.2a.10.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
20.7.7

20 : Arsenates (also arsenates with phosphate, but without other anions)
7 : Arsenates of U

Physical Properties of Nováčekite-IHide

Vitreous
Colour:
Light yellow
Streak:
White, yellow
Hardness:
2½ on Mohs scale

Optical Data of Nováčekite-IHide

Type:
Uniaxial (-)
RI values:
nω = 1.620 - 1.641 nε = 1.620 - 1.625
Max Birefringence:
δ = 0.000 - 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Comments:
Symmetry requires pseudo-uniaxial optical character.

Chemical Properties of Nováčekite-IHide

Formula:
Mg(UO2)2(AsO4)2 · 12H2O

Crystallography of Nováčekite-IHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.1594 Å, b = 7.161 Å, c = 11.3146 Å
α = 81.391°, β = 81.177°, γ = 88.884°
Ratio:
a:b:c = 1 : 1 : 1.58
Unit Cell V:
566.76 ų (Calculated from Unit Cell)
Comment:
Pseudo-tetragonal (long axis ~22 A).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.2 (10)
6.80 (4)
5.06 (8)
3.58 (9)
3.35 (5)
2.52 (3)
2.26 (3)

Type Occurrence of Nováčekite-IHide

Other Language Names for Nováčekite-IHide

Relationship of Nováčekite-I to other SpeciesHide

Member of:
Other Members of this group:
AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
Nováčekite-IIMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Common AssociatesHide

Associated Minerals Based on Photo Data:
Gypsum6 photos of Nováčekite-I associated with Gypsum on mindat.org.
Erythrite5 photos of Nováčekite-I associated with Erythrite on mindat.org.
Sklodowskite2 photos of Nováčekite-I associated with Sklodowskite on mindat.org.
Bismuthinite2 photos of Nováčekite-I associated with Bismuthinite on mindat.org.
Zeunerite1 photo of Nováčekite-I associated with Zeunerite on mindat.org.
Saléeite1 photo of Nováčekite-I associated with Saléeite on mindat.org.
Metaheinrichite1 photo of Nováčekite-I associated with Metaheinrichite on mindat.org.
Arseniosiderite1 photo of Nováčekite-I associated with Arseniosiderite on mindat.org.
Dolomite1 photo of Nováčekite-I associated with Dolomite on mindat.org.
Magnesite1 photo of Nováčekite-I associated with Magnesite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.EB.05AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
8.EB.05TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
8.EB.05UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.05Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.
8.EB.05ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.05RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
8.EB.10BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.10LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon.
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10Metauranocircite-IBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
8.EB.10MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
8.EB.10MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OOrth.
8.EB.10Meta-lodèviteZn(UO2)2(AsO4)2 · 10H2O
8.EB.15AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet.
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Natrouranospinite(Na2,Ca)(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet.
8.EB.15Uramarsite(NH4,H3O)2(UO2)2(AsO4,PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
8.EB.20ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
8.EB.20ChistyakovaiteAl(UO2)2(AsO4)2(F,OH) · 6.5H2OMon.
8.EB.25ArsenuranospathiteAl[(UO2)(AsO4)]2F(H2O)20Orth. mm2 : Pnn2
8.EB.25Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
8.EB.30Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.
8.EB.35CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
8.EB.40RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
8.EB.45TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
8.EB.50FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
8.EB.55SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m

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

40.2a.10.2MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.7.1Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.2Natrouranospinite(Na2,Ca)(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.3AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
20.7.4MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.5ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
20.7.6MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
20.7.8ArsenuranyliteCa(UO2)4(AsO4)2(OH)4 · 6H2OOrth.
20.7.9MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.10UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.11MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
20.7.12HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
20.7.13MetalodèviteZn(UO2)2(AsO4)2 · 10H2OTet.
20.7.14ArsenuranospathiteAl[(UO2)(AsO4)]2F(H2O)20Orth. mm2 : Pnn2
20.7.15HallimonditePb2(UO2)(AsO4)2 · nH2O, 0 ≤ n ≤ 0.5Tric. 1 : P1
20.7.16HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon.
20.7.17AsselbornitePb(BiO)3(UO2)4(AsO4)2(OH)7·4H2OIso.
20.7.18MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
20.7.19KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
20.7.20MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1

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 Nováčekite-IHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1951): 36: 680-686.
Walenta, K. & Wimmenauer, W. (1961): Der Mineralbestand des Michaelganges im Weiler bei Lahr (Schwarzwald). Jh. Geol. Landesamt Baden-Württemberg, 4, 7-37.
Walenta, K. (1964): Rare arsenate minerals with special consideration of occurrences in the Black Forest. Mineral. Petrog. Mitt. 9, 111-174. (in German).
Mineralogical Magazine (1994): 58: 513.
Locock, A. J., Burns, P. C. & Flynn, T. M. (2004): Divalent transition metals and magnesium in structures that contain the autunite-type sheet. Canadian Mineralogist 42, 1699-1718.

Internet Links for Nováčekite-IHide

Localities for Nováčekite-IHide

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.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Rauris valley
        • Hüttwinkl valley
A. Strasser: Die Minerale Salzburgs (1989)
A. Strasser: Die Minerale Salzburgs (1989)
A. Strasser: Die Minerale Salzburgs (1989)
        • Seidlwinkl valley
A. Strasser: Die Minerale Salzburgs (1989)
Brazil
 
  • Bahia
    • Brumado (Bom Jesus dos Meiras)
      • Serra das Éguas
Cassedanne, J.P. & Cassedanne, J.O. (1978): Famous mineral localities: The Brumado district, Bahia , Brazil. Mineralogical Record 9 : 196-205
No reference listed
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
Plašil J, Sejkora J, Ondruš P, Veselovský F, Beran P, Goliáš V (2006): Supergene minerals in the Horní Slavkov uranium ore district, Czech Republic. Journal of the Czech Geological Society 51, 149-158.
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
          • Přebuz District (Frühbuß)
            • Přebuz (Frühbuß)
Rojík, P. (2006): J. Czech Geol. Soc. 50 (3-4), 157-165.
Rojík, P. (2006): J. Czech Geol. Soc. 50 (3-4), 157-165.
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Klášterec nad Ohří
No reference listed
  • Moravia (Mähren; Maehren)
    • Olomouc Region
      • Javorník (Jauernig)
Sejkora, J.: Uranové ložisko Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 105-110.
France
 
  • Auvergne-Rhône-Alpes
    • Savoie
      • Vanoise
Le Règne Minéral, Hors Série IV, 1998
  • Bourgogne-Franche-Comté
    • Saône-et-Loire
      • Gueugnon
        • Neuvy-Grandchamp
Vajdak, Josef (2006) Mineral News: 22: 11.
  • Occitanie
    • Hérault
      • Lodève
Le Règne Minéral, Hors Série IV (1998)
[Le Cahier des Micromonteurs, 1998, 2, p.13-26]
[Le Règne Minéral 1997, 13, p.5-18]
Le Règne Minéral, Hors Série IV (1998)
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Baden-Baden
No reference listed
      • Lahr
        • Reichenbach
          • Weiler
Walenta, K. & Wimmenauer, W. (1961): Der Mineralbestand des Michaelganges im Weiler bei Lahr (Schwarzwald). Jh. Geol. Landesamt Baden-Württemberg, 4, 7-37. (in German); Wittern: "Mineralfundorte in Deutschland", 2001
      • Menzenschwand
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Schenkenzell
        • Wittichen
          • Burgfelsen
American Mineralogist: 76: 2021.
          • Heubach Valley
No reference listed
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Schiltach
        • Stammelbach valley
[Lapis 1992, 11, p.13-20]
      • Schramberg
        • Falkenstein valley
No reference listed
      • St Ulrich
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
  • North Rhine-Westphalia
    • Siegerland
      • Müsen
Der Aufschluss 2000(2), 71-123
  • Rhineland-Palatinate
    • Hunsrück
      • Birkenfeld
        • Ellweiler
Aufschluss 69/(7+8), Lapis 79/(7+8)
    • Palatinate
      • Winnweiler
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony
    • Erzgebirge
      • Ehrenfriedersdorf
        • Geyer
Wittern: "Mineralfundorte in Deutschland", 2001
      • Johanngeorgenstadt District
Gröbner, J., Grimm, O. & Zienau, H. (2005): Neufunde interessanter Wismut- und Uranmineralien am Schaarschacht, Johanngeorgenstadt, Sachsen. Lapis 30 (6), 44-51; 62.
      • Schneeberg District
        • Neustädtel
          • Weißer Hirsch Mine (Shaft 3)
Amer.Min.(1951) 36, 680-686
      • Schwarzenberg District
J. Gröbner und U. Kolitsch (2006): Neufunde aus dem Erzgebirge (II). Mineralien-Welt 17 (3), 22-27.
  • Thuringia
    • Gera
      • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
Italy
 
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Giudicarie Valleys
        • Chiese Valley
          • Daone
            • Daone Valley
              • Limes
Campostrini, I., Demartin, F., Gramaccioli, C.M. (2005): Val Daone. Minerali secondari del giacimento uranifero presso Limes, Daone (TN). Rivista Mineralogica Italiana, 4/2005, 228-240.
Mexico
 
  • Chihuahua
    • Mun. de Aldama
      • Puerto del Aire
Panczner (1987): 284.
    • Mun. de Aquiles Serdán
      • Santa Eulalia District
        • West Camp
          • Francisco Portillo
Panczner(1987):220 & 284.
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
          • Bou Azer
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Tamdrost
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
South Africa
 
  • Western Cape Province
    • Central Karoo District
Minerals of South Africa
Switzerland
 
  • Wallis (Valais)
    • Le Trient Valley
      • Les Marécottes
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 289.
UK
 
  • England
    • Cornwall
      • St Just
        • Botallack
Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
USA
 
  • Alaska
    • Prince of Wales-Outer Ketchikan Borough
      • Ketchikan District
        • Prince of Wales Island
          • Bokan Mountain
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Nevada
    • Mineral Co.
      • Fitting District
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Cibola Co.
Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996); Am Min 39:675-676
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
    • McKinley Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
No reference listed
  • Oklahoma
    • Comanche Co.
R&M 72:4 pp 252-264; American Mineralogist 41:152-153
R&M 72:4 pp 252-264; American Mineralogist 41:152-153
  • Oregon
    • Lake Co.
      • Lakeview
Nevada Bureau of Mines and Geology NBMG Open-File Report 96-3 By Stephen B. Castor, Christopher D. Henry, Lisa A. Shevenell
  • Utah
    • San Juan Co.
      • Paradox Valley
        • Paradox Valley District
UGMS Bull 117 Minerals and Mineral Localities of Utah
Uzbekistan
 
  • Namangan Viloyati
    • Chatkal-Kuraminskii Range
      • Pap
Frost, R. L., Cejka, J., & Dickfos, M. J. (2009). Raman spectroscopic study of the uranyl minerals vanmeersscheite U (OH) 4 [(UO2) 3 (PO4) 2 (OH) 2]. 4H2O and arsenouranylite Ca (UO2)[(UO2) 3 (AsO4) 2 (OH) 2].(OH) 2.6 H2O. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71(5), 1799-1803.
Mineral and/or Locality  
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