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Aspedamite

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About AspedamiteHide

Formula:
12(Fe+23Fe2+)Nb4(ThNb9Fe+23 Ti4+O42)(H2O)9(OH)3
Colour:
Brownish orange to deep red
Lustre:
Adamantine
Hardness:
3 - 4
Specific Gravity:
4.070 (Calculated)
Crystal System:
Isometric
Name:
Named after the locality close to Aspedammen, Halden, Østfold, Norway.
Isostructural with:
A natural heteropolyniobate - the second known after menezesite. Chemically somewhat related to hexaniobates peterandresenite and hansesmarkite.
Found on only one specimen at the TL (status 2018).



Classification of AspedamiteHide

Approved
Approval Year:
2011
First Published:
2012

Physical Properties of AspedamiteHide

Adamantine
Colour:
Brownish orange to deep red
Streak:
Very pale orange
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Density:
4.070 g/cm3 (Calculated)

Chemical Properties of AspedamiteHide

Formula:
12(Fe+23Fe2+)Nb4(ThNb9Fe+23 Ti4+O42)(H2O)9(OH)3
IMA Formula:
12(Fe3+,Fe2+)3Nb4[Th(Nb,Fe3+)12O42](H2O,OH)12

Crystallography of AspedamiteHide

Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Im3
Cell Parameters:
a = 12.9078(6) Å
Unit Cell V:
2150.6 ų
Z:
2
Morphology:
Dominant forms: the dodecahedron {110} modified by the cube {100}
Twinning:
None observed

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.107(100)
4.567(15)
4.083(15)
3.454(18)
3.233(28)
2.889(33)
2.635(36)
1.726(29)

Occurrences of AspedamiteHide

Paragenetic Mode(s):

Type Occurrence of AspedamiteHide

General Appearance of Type Material:
Small to 50 micron, euhedral crystals of dodecahedra and cubes perched on a white mat of an Al-Nb-Fe-Ti-Ca-K-bearing silicate on a partly 12 x 12 x 6 mm large monazite crystal.
Place of Conservation of Type Material:
Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada, catalogue number M56117
Empirical Formula of Type Material:
K0.09Ca0.13Ce0.26La0.08Nd0.07Fe2+1.00Mn0.30Fe3+3.48Th0.56Ti 4+0.71Si0.34Nb12.98Ta0.21O42(H2O)9(OH)3
Chemical Analysis of Type Material:
Nb2O565.64 %
Ta2O51.78 %
SiO20.78 %
ThO25.64 %
Fe2O310.56 %
FeO2.73 %
MnO0.82 %
CaO0.28 %
K2O0.16 %
La2O30.52 %
Ce2O31.62 %
Nd2O30.44 %
H2O7.20 %
TiO22.15 %
Total:100.32 %
Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:
Reference:
Cooper, M.A., Abdu, Y.A., Ball, N.A., Černý, P., Hawthorne, F. and Kristiansen, R. (2012): Aspedamite, Ideally □12(Fe3+, Fe2+)3Nb4[Th(Nb,Fe3+)12O42]{(H2O),(OH)}12, a New Heteropolyniobate Mineral Species from the Herrebøkasa Quarry, Aspedammen, Østfold, Southern Norway: Description and Crystal Structure. Canadian Mineralogist. 50: 793-894

Synonyms of AspedamiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Monazite1 photo of Aspedamite associated with Monazite on mindat.org.
Columbite-(Fe)1 photo of Aspedamite associated with Columbite-(Fe) on mindat.org.

Fluorescence of AspedamiteHide

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 AspedamiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cooper, M.A., Ball, N.A., Abdu, Y., Hawthorne, F.C., Černý, P. and Kristiansen, R. (2011): Aspedamite, IMA 2011-056. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75: 2887-2893.
Cooper, M.A., Abdu, Y.A., Ball, N.A., Černý, P., Hawthorne, F. and Kristiansen, R. (2012): Aspedamite, Ideally □12(Fe3+, Fe2+)3Nb4[Th(Nb,Fe3+)12O42]{(H2O),(OH)}12, a New Heteropolyniobate Mineral Species from the Herrebøkasa Quarry, Aspedammen, Østfold, Southern Norway: Description and Crystal Structure. Canadian Mineralogist. 50: 793-894

Internet Links for AspedamiteHide

Localities for AspedamiteHide

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.
Norway (TL)
 
  • Østfold
    • Halden
      • Idd
        • Aspedammen
Cooper, M.A., Ball, N.A., Abdu, Y., Hawthorne, F.C., Černý, P. and Kristiansen, R. (2011): Aspedamite, IMA 2011-056. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893.; Cooper, M.A., Abdu, Y.A., Ball,N.A., Černý,P., Hawthorne,F. and Kristiansen, R. (2012): Aspedamite, Ideally □12(Fe3+, Fe2+)3Nb4[Th(Nb,Fe3+)12O42]{(H2O),(OH)}12, a New Heteropolyniobate Mineral Species from the Herrebøkasa Quarry, Aspedammen, Østfold, Southern Norway: Description and Crystal Structure. Canadian Mineralogist. 50: 793-894
  • Vestfold
    • Sandefjord
      • Haneholmveien
K. E. Larsen and U. Kolitsch (2012): An unique mineral suite in a syenite pegmatite at Virikkollen, Sandefjord, Larvik Plutonic Complex, Norway. Norsk Bergverksmuseum Skrift 49, 35-44.
Mineral and/or Locality  
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