Natalyite
A valid IMA mineral species
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About Natalyite
Formula:
NaV3+Si2O6
Colour:
Bright green with a tinge of yellow
Lustre:
Vitreous
Hardness:
6½ - 7
Specific Gravity:
3.55 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Natalya Vasil'evna Frolova (Наталья Васильевна Фролова) (October 1907, Baku, Russian Empire (now Azerbaijan) - 18 July 1960, Moscow, USSR), geologist at Irkutsk University and researcher of the Precambrian complexes of Siberia. Pavlovskyite is named after her husband.
Unique Identifiers
Mindat ID:
2846
Long-form identifier:
mindat:1:1:2846:8
IMA Classification of Natalyite
Approved
Approval year:
1984
First published:
1985
Classification of Natalyite
9.DA.25
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
65.1.3c.5
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
14.15.2
14 : Silicates not Containing Aluminum
15 : Silicates of Cr
14 : Silicates not Containing Aluminum
15 : Silicates of Cr
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 |
|---|---|---|
| Nta | 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 Natalyite
Vitreous
Transparency:
Translucent
Colour:
Bright green with a tinge of yellow
Streak:
Green
Hardness:
6½ - 7 on Mohs scale
Hardness:
VHN50=1013 - 1079 kg/mm2 - Vickers
Cleavage:
Distinct/Good
{110}, distinct
{110}, distinct
Parting:
parting on {001}
Density:
3.55 g/cm3 (Calculated)
Optical Data of Natalyite
Type:
Biaxial (-)
RI values:
nα = 1.741(2) nβ = 1.762(3) nγ = 1.762(3)
2V:
Measured: 8° to 12°
Max. Birefringence:
δ = 0.021
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:
strong
Pleochroism:
Strong
Comments:
Z,Y = emerald green
X = yellow
X = yellow
Chemistry of Natalyite
Mindat Formula:
NaV3+Si2O6
Element Weights:
Elements listed:
Common Impurities:
Ti,Al,Mg,Ca
Crystallography of Natalyite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 9.58(1) Å, b = 8.72(1) Å, c = 5.27(1) Å
β = 107.16°
β = 107.16°
Ratio:
a:b:c = 1.099 : 1 : 0.604
Unit Cell V:
420.65 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0002809 | Natalyite | Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V (2002) Crystal chemistry of Cr-V-rich clinopyroxenes Sample 4 American Mineralogist 87 709-714 |  | 2002 | 0 | 293 | |
| 0002808 | Natalyite | Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V (2002) Crystal chemistry of Cr-V-rich clinopyroxenes Sample 3 American Mineralogist 87 709-714 | | 2002 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.96 Å | (10) |
| 2.52 Å | (10) |
| 2.87 Å | (8) |
| 1.391 Å | (8b) |
| 2.46 Å | (7) |
| 6.24 Å | (6) |
| 4.36 Å | (6) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 53 : Other minerals with taphonomic origins | <0.4 |
Type Occurrence of Natalyite
General Appearance of Type Material:
Small grains
Place of Conservation of Type Material:
Fersman Mineralogical Museum
Geological Setting of Type Material:
Cr- and V-rich diopside-quartz rocks of the Slyudianska Precambrian metamorphic complex.
Associated Minerals at Type Locality:
Synonyms of Natalyite
Other Language Names for Natalyite
Relationship of Natalyite to other Species
Member of:
Other Members of Clinopyroxene Subgroup:
| Aegirine | NaFe3+Si2O6 | Mon. 2/m : B2/b |
| Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 | Mon. 2/m : B2/b |
| Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 | Mon. 2/m : B2/b |
| Burnettite | CaVAlSiO6 | Mon. 2/m : B2/b |
| Clinoenstatite | MgSiO3 | Mon. 2/m : P21/b |
| Clinoferrosilite | Fe2+2Si2O6 | Mon. 2/m : P21/b |
| Colomeraite | NaTi3+Si2O6 | Mon. 2/m : B2/b |
| Davisite | CaScAlSiO6 | Mon. 2/m : B2/b |
| Diopside | CaMgSi2O6 | Mon. 2/m : B2/b |
| Esseneite | CaFe3+[AlSiO6] | Mon. 2/m : B2/b |
| Grossmanite | CaTi3+ AlSiO6 | Mon. 2/m : B2/b |
| Hedenbergite | CaFe2+Si2O6 | Mon. 2/m : B2/b |
| Jadeite | Na(Al,Fe3+)Si2O6 | Mon. 2/m : B2/b |
| Jervisite | NaSc3+Si2O6 | Mon. 2/m : B2/b |
| Johannsenite | CaMn2+Si2O6 | Mon. 2/m : B2/b |
| Kanoite | Mn2+MgSi2O6 | Mon. 2/m : P21/b |
| Kosmochlor | NaCrSi2O6 | Mon. 2/m : B2/b |
| Kushiroite | CaAlAlSiO6 | Mon. 2/m : B2/b |
| Namansilite | NaMn3+Si2O6 | Mon. 2/m : B2/b |
| Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 | Mon. 2/m |
| Petedunnite | CaZnSi2O6 | Mon. 2/m : B2/b |
| Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 | Mon. 2/m : P21/b |
| Ryabchikovite | CuMgSi2O6 | Mon. 2/m : P21/b |
| Spodumene | LiAlSi2O6 | Mon. 2/m : B2/b |
| Tissintite | (Ca,◻)AlSi2O6 | Mon. 2/m : B2/b |
| 'UM2003-36-SiO:CaNa' | NaCrSi2O6 - CaMgSi2O6 | Mon. 2/m : B2/b |
Common Associates
Associations Based on Photo Data:
| 4 photos of Natalyite associated with Diopside | CaMgSi2O6 |
| 3 photos of Natalyite associated with Nolanite | V3+8Fe3+2O14(OH)2 |
| 3 photos of Natalyite associated with Roscoelite | KV3+2(AlSi3O10)(OH)2 |
| 2 photos of Natalyite associated with Karelianite | V3+2O3 |
Related Minerals - Strunz-mindat Grouping
| 9.DA. | Colomeraite | NaTi3+Si2O6 |
| 9.DA. | Protoenstatite | Mg2Si2O6 |
| 9.DA. | Ryabchikovite | CuMgSi2O6 |
| 9.DA.05 | Donpeacorite | Mn2+MgSi2O6 |
| 9.DA.05 | Enstatite | Mg2Si2O6 |
| 9.DA.05 | Ferrosilite | Fe2+2Si2O6 |
| 9.DA.10 | Clinoenstatite | MgSiO3 |
| 9.DA.10 | Clinoferrosilite | Fe2+2Si2O6 |
| 9.DA.10 | Kanoite | Mn2+MgSi2O6 |
| 9.DA.10 | Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 9.DA.15 | Grossmanite | CaTi3+ AlSiO6 |
| 9.DA.15 | Diopside | CaMgSi2O6 |
| 9.DA.15 va | 'Jeffersonite' | Ca(Mn,Zn,Fe)Si2O6 |
| 9.DA.15 | Hedenbergite | CaFe2+Si2O6 |
| 9.DA.15 | Johannsenite | CaMn2+Si2O6 |
| 9.DA.15 | Petedunnite | CaZnSi2O6 |
| 9.DA.15 | Esseneite | CaFe3+[AlSiO6] |
| 9.DA.15 | Kushiroite | CaAlAlSiO6 |
| 9.DA.15 | Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| 9.DA.15 | Davisite | CaScAlSiO6 |
| 9.DA.20 | Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| 9.DA.20 | Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 |
| 9.DA.25 | Jadeite | Na(Al,Fe3+)Si2O6 |
| 9.DA.25 | Namansilite | NaMn3+Si2O6 |
| 9.DA.25 | Aegirine | NaFe3+Si2O6 |
| 9.DA.25 | Jervisite | NaSc3+Si2O6 |
| 9.DA.25 | Tissintite | (Ca,◻)AlSi2O6 |
| 9.DA.25 | Kosmochlor | NaCrSi2O6 |
| 9.DA.30 | Spodumene | LiAlSi2O6 |
| 9.DA.35 | Hiroseite | FeSiO3 |
Other Information
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 Natalyite
mindat.org URL:
https://www.mindat.org/min-2846.html
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References for Natalyite
Localities for Natalyite
Showing 3 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 | |
| Potter et al. (2005) |
Russia (TL) | |
| Reznitsky et al. (1985) +2 other references |
| Pavel M. Kartashov (n.d.) +1 other reference |
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Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia