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Kahlerite

A valid IMA mineral species - grandfathered
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04582740014947519378090.jpg
Kahlerite

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
06843390014947519349662.jpg
Kahlerite, etc.

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
06059880014972347262872.jpg
Kahlerite

Lichtenberg Absetzer dump, Kauern, Greiz District, Thuringia, Germany
04582740014947519378090.jpg
Kahlerite

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
06843390014947519349662.jpg
Kahlerite, etc.

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
01323220014949325889514.jpg
Kahlerite

Lichtenberg Absetzer dump, Kauern, Greiz District, Thuringia, Germany
04582740014947519378090.jpg
Kahlerite

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
09170950014959147065275.jpg
Kahlerite, etc.

Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
Hide all sections | Show all sections

About KahleriteHide

08903020014946362991490.jpg
Franz Kahler
Formula:
Fe(UO2)2(AsO4)2 · 12H2O
Colour:
yellow
Hardness:
2 - 2½
Specific Gravity:
3.22 (Calculated)
Crystal System:
Tetragonal
Member of:
Autunite Group
Name:
Named by H. Meixner in 1953 for Franz Kahler (23 June 1900, Karolinenthal, Czech Republic - 6 August 1995, Sankt Veit an der Glan, Austria), geologist, Carinthian Landesmuseum, Klagenfurt, Austria.
Autunite Group.


Unique IdentifiersHide

Mindat ID:
2131
Long-form identifier:
mindat:1:1:2131:5
GUID
(UUID V4):
31e498ff-98a8-494a-8330-a4ec9a4a62e8

IMA Classification of KahleriteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Fe2+(UO2)2(AsO4)2 · 12H2O

Classification of KahleriteHide

Strunz-mindat (2024):
8.EB.05

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 8th ed.:
40.2a.15.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:
20.7.19

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
KahIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of KahleriteHide

Transparency:
Transparent
Colour:
yellow
Hardness:
2 - 2½ on Mohs scale
Cleavage:
Perfect
{001}
Density:
3.22 g/cm3 (Calculated)

Optical Data of KahleriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.634(5) nε = 1.632(5)
2V:
Measured: 9° to 33°
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Comments:
nearly uniaxial to biaxial

Chemistry of KahleriteHide

Mindat Formula:
Fe(UO2)2(AsO4)2 · 12H2O
Elements listed:
As, Fe, H, O, U - search for minerals with similar chemistry

Crystallography of KahleriteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
P42/n
Cell Parameters:
a = 14.30 Å, c = 21.97 Å
Ratio:
a:c = 1 : 1.536
Unit Cell V:
4,492.65 ų (Calculated from Unit Cell)
Z:
8

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.53 Å(100)
11.1 Å(80)
5.55 Å(50)
3.59 Å(50)
1.603 Å(40)
1.763 Å(30)
3.20 Å(20)

Geological EnvironmentHide

Type Occurrence of KahleriteHide

Type Locality:
ⓘ Knichte section, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia, Austria
General Appearance of Type Material:
tabular lemon-yellow crystals 2 mm. in size
Place of Conservation of Type Material:
Carinthian Landesmuseum, Klagenfurt, Austria; Cambridge University, Cambridge, England.
Geological Setting of Type Material:
secondary mineral in the oxidized zone of a uraninite-bearing iron deposit
Associated Minerals at Type Locality:
SymplesiteScoroditePitticiteLöllingiteLöllingite

Other Language Names for KahleriteHide

German:Kahlerit
Spanish:Kahlerita

Relationship of Kahlerite to other SpeciesHide

Member of:
Autunite Group
Other Members of this group:
AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
NováčekiteMg(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
TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
UranospiniteCa(UO2)2(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:
2 photos of Kahlerite associated with MetalodèviteZn(UO2)2(AsO4)2 · 10H2O
2 photos of Kahlerite associated with ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
1 photo of Kahlerite associated with SideriteFeCO3
1 photo of Kahlerite associated with ZeuneriteCu(UO2)2(AsO4)2 · 12H2O
1 photo of Kahlerite associated with Stink-FlussCaF2
1 photo of Kahlerite associated with BassetiteFe2+(UO2)2(PO4)2 · 10H2O
1 photo of Kahlerite associated with Chadwickite(UO2)[HAsO3]

Related Minerals - Strunz-mindat GroupingHide

8.EB.Meta-autunite GroupA1-2(UO2)2(TO4)2 · 5-10H2O
8.EB.05AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
8.EB.05HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m
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)2(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.05NováčekiteMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
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. 2/m
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10MetauranocirciteBa(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 · 8H2OMon. 2 : P21
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 · 3H2OTet.
8.EB.10Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
8.EB.10MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
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. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15NatrouranospiniteNa2(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. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Uramarsite(NH4)(UO2)(AsO4) · 3H2OTet. 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)2(AsO4)2F · 20H2OOrth. 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
8.EB.60Horákite(Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2OMon. 2/m : B2/b

Fluorescence of KahleriteHide

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.

Internet Links for KahleriteHide

References for KahleriteHide

Localities for KahleriteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria (TL)
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Hüttenberg
        • Hüttenberger Erzberg
          • Lölling mining district
H. Meixner: Der Karinthin 23:277-280 (1953)
  • Salzburg
    • St. Johann im Pongau District
      • Mühlbach am Hochkönig
Exel (1993)
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002 (7/8)
  • South Bohemian Region
    • Písek District
Škoda et al. (2011)
France
 
  • Occitanie
    • Hérault
      • Lodève
        • Le Puech
- (1998)
        • Lodève
- (1998)
Germany
 
  • Saxony
    • Erzgebirgskreis
Lapis 30 (7/8)
Namibia
 
  • Erongo Region
    • Omaruru Constituency
Jahn et al. (2006) +1 other reference
Poland
 
  • Lower Silesian Voivodeship
    • Karkonosze County
      • Gmina Janowice Wielkie
Siuda R. (Rudawy Janowickie Mts., Poland)
Slovakia
 
  • Košice Region
    • Gelnica District
      • Henclová
Martin Števko-unpublished
Spain
 
  • Castile and Leon
    • Salamanca
      • Villar de Peralonso
Joan Rosell (2021)
  • Catalonia
    • Lleida
      • El Pallars Jussà
        • La Vall Fosca
          • La Torre de Cabdella
            • Castell-estaó
Castillo-Oliver et al. (2019)
  • Extremadura
    • Badajoz
      • La Haba
www.foro-minerales.com (n.d.)
www.foro-minerales.com (n.d.)
      • Quintana de la Serena
www.foro-minerales.com (n.d.)
UK
 
  • Scotland
    • Dumfries and Galloway
Braithwaite et al. (1990)
Day (1999)
Seward (1975) +1 other reference
      • Needle's Eye
R. S. W. Braithwaite and J. R. Knight (1990) +1 other reference
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