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Tundrite-(Nd)
A valid IMA mineral species
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About Tundrite-(Nd)
Formula:
Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
Colour:
Brownish to greenish yellow
Hardness:
3
Specific Gravity:
4.02
Member of:
Name:
Named for its relationship to tundrite-(Ce), with Nd being the dominant rare earth element.
Type Locality:
Note that the mineral was accepted automatically, without detailed investigation and description of type material. Only a single Nd-dominant analysis was published. In other words, tundrite-(Nd) is a very doubtful mineral, which nobody saw and nobody have. Consequently nobody was able to repeat results of its chemical analysis.
Unique Identifiers
Mindat ID:
4049
Long-form identifier:
mindat:1:1:4049:1
Similar Names
| Tundrite | ||
| Tundrite-(Ce) | A valid IMA mineral species | Na2Ce2Ti(SiO4)(CO3)2O2 |
IMA Classification of Tundrite-(Nd)
Classification of Tundrite-(Nd)
9.AH.10
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
17.1.11.2
17 : COMPOUND CARBONATES
1 : Miscellaneous
17 : COMPOUND CARBONATES
1 : Miscellaneous
17.4.16
17 : Silicates Containing other Anions
4 : Silicates with carbonates
17 : Silicates Containing other Anions
4 : Silicates with carbonates
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 |
|---|---|---|
| Tnd-Nd | 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 Tundrite-(Nd)
Transparency:
Transparent
Colour:
Brownish to greenish yellow
Hardness:
3 on Mohs scale
Density:
4.02 g/cm3 (Measured)
Optical Data of Tundrite-(Nd)
Type:
Biaxial (+)
RI values:
nα = 1.731
Surface Relief:
Unknown
Comments:
β > 1.80
Chemistry of Tundrite-(Nd)
Mindat Formula:
Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
Element Weights:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| - Å | () |
Comments:
No published X-ray powder diffraction data.
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 |
Type Occurrence of Tundrite-(Nd)
General Appearance of Type Material:
As spherulitic masses up to 5 mm.
Place of Conservation of Type Material:
No designated type material.
Associated Minerals at Type Locality:
Kringlerne, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland