Hansesmarkite
A valid IMA mineral species
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About Hansesmarkite
The Norwegian priest and mineralogist Hans Morten Thrane Esmark (1801-1882)
Formula:
Ca2Mn2Nb6O19 · 20H2O
Colour:
Faint yellow; yellow
Lustre:
Vitreous, Resinous
Hardness:
2 - 2½
Specific Gravity:
2.74 (Calculated)
Crystal System:
Triclinic
Name:
Named after the Norwegian priest and mineralogist Hans Morten Thrane Esmark (21 August 1801 – 24 April 1882). He was a chaplain (parish priest) in Eidanger and the town of Brevik situated by the Langesundsfjord west of the Larvik Plutonic Complex (LPC), Norway. He discovered several new mineral species as aegirine, leucophanite and thorite. The now descredited esmarkite (of Berzelius), showed to be a weathered cordierite, is also named after him.
New structure type.
Hansesmarkite is extremely prone to dehydration.
The third naturally occurring hexaniobate. Chemically similar to the hexaniobate peterandresenite; further similarity to heteropolyniobates menezesite and aspedamite. As in peterandresenite, the structure is based on 6 edge-sharing Nb-octahedra forming the Lindqvist ion. These complex ions are connected via Mn octahedra thus forming rods along [100]; the space between the rods holds Ca ions. Hydrogen bonds are also present.
Hansesmarkite is extremely prone to dehydration.
The third naturally occurring hexaniobate. Chemically similar to the hexaniobate peterandresenite; further similarity to heteropolyniobates menezesite and aspedamite. As in peterandresenite, the structure is based on 6 edge-sharing Nb-octahedra forming the Lindqvist ion. These complex ions are connected via Mn octahedra thus forming rods along [100]; the space between the rods holds Ca ions. Hydrogen bonds are also present.
Unique Identifiers
Mindat ID:
46880
Long-form identifier:
mindat:1:1:46880:2
IMA Classification of Hansesmarkite
Approved
IMA Formula:
Ca2Mn2+2Nb5+6O19·20H2O
Approval year:
2015
First published:
2017
Classification of Hansesmarkite
7.GB.60
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hmk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Hansesmarkite
Vitreous, Resinous
Transparency:
Transparent
Colour:
Faint yellow; yellow
Streak:
Very pale yellow
Hardness:
2 - 2½ on Mohs scale
Comment:
Not measured, based on similarity to peterandresenite
Tenacity:
Brittle
Cleavage:
Distinct/Good
good on {011} and {011}.
good on {011} and {011}.
Comment:
Fracture described as curved in type description.
Density:
2.74 g/cm3 (Calculated)
Comment:
Calulated on basis of the empirical formula.
Optical Data of Hansesmarkite
Type:
Biaxial (+)
RI values:
nα = 1.683(2) nβ = 1.698(2) nγ = 1.745(3)
2V:
Measured: 60.7° (6), Calculated: 60.3°
Max. Birefringence:
δ = 0.062
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
moderate (r>v)
Comments:
X (~colourless) < Y (pale yellow) << Z (orange-yellow)
Comments:
Orientation: X^c=20º, Y^b=16º, Z^a=5º
Chemistry of Hansesmarkite
Mindat Formula:
Ca2Mn2Nb6O19 · 20H2O
Element Weights:
Common Impurities:
Fe
Crystallography of Hansesmarkite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 9.081(4) Å, b = 9.982(8) Å, c = 10.60(1) Å
α = 111.07(8)°, β = 101.15(6)°, γ = 99.39(5)°
α = 111.07(8)°, β = 101.15(6)°, γ = 99.39(5)°
Ratio:
a:b:c = 0.91 : 1 : 1.062
Unit Cell V:
850.81 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Patches, rarely as elongated tablets up to 0.3 mm long within the patches. Elongated on [100]. Forms observed: {100}, {010}, {011}, {011}, {101}, {111}, {110}, {122}, {123} and {210}.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.282 Å | (36) |
| 8.610 Å | (100) |
| 7.108 Å | (14) |
| 5.412 Å | (12) |
| 3.257 Å | (30) |
| 3.058 Å | (18) |
| 2.715 Å | (17) |
| 2.628 Å | (12) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Hansesmarkite
General Appearance of Type Material:
Crystals up, to 0.3 mm; also thin coatings in patches on gonnardite
Place of Conservation of Type Material:
Cotype material is deposited in the collections of the Natural History Museum, University of Oslo, Norway, catalogue numbers 43584, 43585 and 43586, and the Mineral Sciences Department, Natural History Museum of Los Angeles, USA
Empirical Formula of Type Material:
(Ca1.93Na0.02K0.01)Σ1.96(Mn1.79Fe0.11)Σ1.90Nb6O18.84·20H2O
Chemical Analysis of Type Material:
| Nb2O5 | 64 % |
|---|---|
| MnO | 10.2 % |
| CaO | 8.6 % |
| FeO | 0.6 % |
| Na2O | 0.04 % |
| K2O | 0.02 % |
| H2O | 28.94 % |
| Total: | 112.4 % |
Geological Setting of Type Material:
Syenite pegmatite in a larvikite quarry
Associated Minerals at Type Locality:
Synonyms of Hansesmarkite
Other Language Names for Hansesmarkite
Dutch:Hansesmarkiet
German:Hansesmarkit
Common Associates
Associations Based on Photo Data:
| 2 photos of Hansesmarkite associated with Peterandresenite | Mn4Nb6O19 · 14H2O |
Related Minerals - Strunz-mindat Grouping
| 7.GB. | Stunorthropite | (NH4)4[Mo2O6(MoO4)2] |
| 7.GB. | Hartkoppeite | Ca4Mn2+Mo6+6As5+4O32(OH)2(H2O)14 · 5H2O |
| 7.GB. | Wangpuite | K3(PO4)(Mo12O36) |
| 7.GB. | Alexearlite | Hg3S2(MoO4) |
| 7.GB. | Ootannite | Th4+2W6+4O16 · 5H2O |
| 7.GB. | Natromolybdite | Na2MoO4 · 2H2O |
| 7.GB. | Marsaalamite-(Y) | Y(MoO4)(OH) |
| 7.GB.05 | Lindgrenite | Cu3(MoO4)2(OH)2 |
| 7.GB.10 | Szenicsite | Cu3(MoO4)(OH)4 |
| 7.GB.15 | 'UM1999-38-WO:CrV' | (V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3] |
| 7.GB.15 | Huenite | Cu4(MoO4)3(OH)2 |
| 7.GB.15 | Cuprotungstite | Cu2(WO4)(OH)2 |
| 7.GB.20 | Phyllotungstite | (H2O,M)x(W,Fe)(O,OH)3 · yH2O (M = Ca, Cs, Pb or K) |
| 7.GB.25 | Rankachite | Ca0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2O |
| 7.GB.30 | Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| 7.GB.35 | Mpororoite | WAlO3(OH)3 · 2(H2O) |
| 7.GB.35 | Anthoinite | AlWO3(OH)3 |
| 7.GB.40 | Obradovicite-KCu | [K2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3] |
| 7.GB.45 | Paramendozavilite | [KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13] |
| 7.GB.45 | Mendozavilite-NaFe | [Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2] |
| 7.GB.45 | Obradovicite-NaCu | Na2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3] |
| 7.GB.45 | Obradovicite-NaNa | [Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] |
| 7.GB.50 | Tancaite-(Ce) | FeCe(MoO4)3 · 3H2O |
| 7.GB.50 | Mendozavilite-NaCu | [Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3] |
| 7.GB.50 | Mendozavilite-KCa | [K2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O34(OH)3] |
| 7.GB.60 | Peterandresenite | Mn4Nb6O19 · 14H2O |
| 7.GB.60 | Melcherite | Ba2Na2Mg[Nb6O19] · 6H2O |
| 7.GB.65 | Ichnusaite | Th(MoO4)2 · 3H2O |
| 7.GB.70 | Markascherite | Cu3(MoO4)(OH)4 |
| 7.GB.75 | Nuragheite | Th(MoO4)2 · H2O |
| 7.GB.80 | Ophirite | Ca2Mg4[Zn2Mn3+2(H2O)2(Fe3+W9O34)2] · 46H2O |
Fluorescence of Hansesmarkite
None luminescence under longwave or shortwave ultraviolet light
Other Information
Notes:
Hansesmarkite readily dehydrates in a vacuum.
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 Hansesmarkite
mindat.org URL:
https://www.mindat.org/min-46880.html
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Please feel free to link to this page.
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References for Hansesmarkite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter no 28. Mineralogical Magazine, 79 (7) 1859-1864 doi:10.1180/minmag.2015.079.7.18
Localities for Hansesmarkite
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Norway (TL) | |
| Friis et al. (2017) |
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A/S Granit Quarry, Tuften, Tvedalen, Larvik Commune, Vestfold, Norway