Nordenskiöldine
A valid IMA mineral species - grandfathered
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About Nordenskiöldine
Baron (Nils) Adolf Erik Nordenskiöld
Formula:
CaSn4+[BO3]2
Colour:
Colourless, yellow; colourless in transmitted light
Lustre:
Vitreous, Pearly
Hardness:
5½ - 6
Specific Gravity:
4.09 - 4.20
Crystal System:
Trigonal
Name:
Named by Waldemar Christopher Brögger in 1887 in honor of Nils Adolf Erik Nordenskiöld (November 18, 1832 Helsinki, Finland - August 12, 1901 Dalbyö, Södermanland, Sweden), Swedish mineralogist and explorer.
Isostructural with:
This page provides mineralogical data about Nordenskiöldine.
Name Encoding
ASCII-7:
Nordenskioldine
Unique Identifiers
Mindat ID:
2926
Long-form identifier:
mindat:1:1:2926:7
IMA Classification of Nordenskiöldine
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
CaSn4+(BO3)2
First published:
1887
Classification of Nordenskiöldine
6.AA.15
6 : BORATES
A : Monoborates
A : BO3, without additional anions; 1(D).
6 : BORATES
A : Monoborates
A : BO3, without additional anions; 1(D).
24.3.3.1
24 : ANHYDROUS BORATES
3 : AmBn[XO3]p
24 : ANHYDROUS BORATES
3 : AmBn[XO3]p
9.6.3
9 : Borates
6 : Borates of Ti, Sn and Ta
9 : Borates
6 : Borates of Ti, Sn and Ta
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 |
|---|---|---|
| Nsk | 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 Nordenskiöldine
Vitreous, Pearly
Transparency:
Transparent
Comment:
Pearly on cleavage {0001}
Colour:
Colourless, yellow; colourless in transmitted light
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {0001} perfect; on {1011} indistinct (observed in thin sections).
On {0001} perfect; on {1011} indistinct (observed in thin sections).
Fracture:
Conchoidal
Density:
4.09 - 4.20 g/cm3 (Measured) 4.18 g/cm3 (Calculated)
Optical Data of Nordenskiöldine
Type:
Uniaxial (-)
RI values:
nω = 1.774 - 1.778 nε = 1.660 - 1.661
Max. Birefringence:
δ = 0.114 - 0.117
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:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Chemistry of Nordenskiöldine
Mindat Formula:
CaSn4+[BO3]2
Element Weights:
Elements listed:
Crystallography of Nordenskiöldine
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 4.858(1) Å, c = 16.080(2) Å
Ratio:
a:c = 1 : 3.31
Unit Cell V:
328.65 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Crystals thin to thick tabular {0001}. Also thick, lens-like crystals; subparallel growths.
Epitaxial Relationships of Nordenskiöldine
Epitaxial Minerals:
| 'Calcite' | CaCO3 |
| 'Cassiterite' | SnO2 |
| 'Siderite' | FeCO3 |
Epitaxy Comments:
Calcite and siderite overgrowths on nordenskiöldine, with parallel axes. Cassiterite, with [001] parallel to nordenskiöldine {0001} [1011] or [1120].
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.342 Å | (100) |
| 2.900 Å | (28) |
| 1.810 Å | (13) |
| 3.720 Å | (11) |
| 2.673 Å | (8) |
| 4.061 Å | (7) |
| 2.424 Å | (4) |
Comments:
Jiangsu Province, China.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Geological Setting:
In marble in an ore pipe (Arandis).
Type Occurrence of Nordenskiöldine
Geological Setting of Type Material:
Alkaline pegmatite
Associated Minerals at Type Locality:
Other Language Names for Nordenskiöldine
Common Associates
Associations Based on Photo Data:
| 9 photos of Nordenskiöldine associated with Löllingite | FeAs2 |
| 2 photos of Nordenskiöldine associated with Magnetite | Fe2+Fe3+2O4 |
| 1 photo of Nordenskiöldine associated with Analcime | Na(AlSi2O6) · H2O |
| 1 photo of Nordenskiöldine associated with Bornite | Cu5FeS4 |
| 1 photo of Nordenskiöldine associated with Danburite | CaB2Si2O8 |
| 1 photo of Nordenskiöldine associated with Calcite | CaCO3 |
Related Minerals - Strunz-mindat Grouping
Fluorescence of Nordenskiöldine
Nordenskiöldine from MW Claims fluoresces bright pale yellow in SW and is virtually non-fluorescent in LW.
Other Information
Notes:
Incompletely decomposed by HCl.
Alters to Cassiterite.
Alters to Cassiterite.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
None.
Internet Links for Nordenskiöldine
mindat.org URL:
https://www.mindat.org/min-2926.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Nordenskiöldine
Localities for Nordenskiöldine
Showing 18 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.
Canada | |
| Rocks & Min.: 60 (1) |
| Liverton et al. (eds.) | |
China | |
| Lianshun Feng (1986) +1 other reference |
| Aleksandrov (1998) |
| Chen Sisong et al. (1987) |
| Chen et al. (1992) |
| Mingxiu Wei (1985) +1 other reference | |
| Xu Jinsha et al. (2019) | |
Czech Republic | |
| Houzar et al. (2009) +1 other reference |
Germany | |
| |
Kyrgyzstan | |
| Marshukova et al. (1968) |
Namibia | |
| Palache et al. (1944) +1 other reference |
Norway | |
| Sunde et al. (2013) |
| Brøgger (1887) +1 other reference |
| Åsheim et al. (1980) +1 other reference | |
Russia | |
| Rudnev et al. (1998) |
USA | |
| Aleksandrov (1974b) |
| www.excaliburmineral.com |
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