Chesnokovite
A valid IMA mineral species
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About Chesnokovite
Formula:
Na2[SiO2(OH)2] · 8H2O
Colour:
Colorless
Lustre:
Sub-Vitreous
Hardness:
2½
Specific Gravity:
1.68
Crystal System:
Orthorhombic
Name:
In honor of Russian mineralogist Boris Valentinovich Chesnokov (Борис Валентинович Чесноков) (11 June 1928 - 25 October 2005). He was a specialist in the mineralogy of the Southern Urals and founder of a Russian school of mineralogy technogenesis. He also described about 10 new minerals.
Unique Identifiers
Mindat ID:
29135
Long-form identifier:
mindat:1:1:29135:2
GUID
(UUID V4):
(UUID V4):
eca0d30c-6657-4dd1-9169-1eec22b4f488
Classification of Chesnokovite
Approved
Approval year:
2006
First published:
2007
9.AC.20
9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
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 |
---|---|---|
Ck | 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 Chesnokovite
Sub-Vitreous
Transparency:
Transparent, Translucent
Colour:
Colorless
Comment:
Aggregates are white to pale brown or yellowish. Colorless in thin section.
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {010}, good on {100} and {001}.
Perfect on {010}, good on {100} and {001}.
Fracture:
Conchoidal, Step-Like
Density:
1.68(2) g/cm3 (Measured) 1.60 g/cm3 (Calculated)
Comment:
Calculated value of 1.60 (empirical formula) or 1.64 (ideal formula).
Optical Data of Chesnokovite
Type:
Biaxial (+)
RI values:
nα = 1.449(2) nβ = 1.453(2) nγ = 1.458(3)
2V:
Measured: 80° (5), Calculated: 84°
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Optical Extinction:
XY || {010}; Z = b
Chemical Properties of Chesnokovite
Formula:
Na2[SiO2(OH)2] · 8H2O
IMA Formula:
Na2SiO2(OH)2 · 8H2O
Elements listed:
Crystallography of Chesnokovite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Ibca
Cell Parameters:
a = 11.7119 Å, b = 16.973 Å, c = 11.5652 Å
Ratio:
a:b:c = 0.69 : 1 : 0.681
Unit Cell V:
2,299.00 ų (Calculated from Unit Cell)
Z:
8
Crystal Structure
Load
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) |
---|---|---|---|---|---|---|---|
0012665 | Chesnokovite | Pekova I V, Chukanov N V, Zadov A E, Zubkova N V, Pushcharovsky D Yu (2007) Chesnokovite, Na2[SiO2(OH)2]*8H2O, the first natural sodium orthosilicate from the Lovozero alkaline pluton, Kola Peninsula: Description and crystal structure of a new mineral species Geology of Ore Deposits 49 727-738 | 2007 | Mt. Kedykverpakhk, Lovozero alkaline pluton, Kola Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.001 Å | (30) |
4.788 Å | (42) |
3.847 Å | (89) |
2.932 Å | (42) |
2.832 Å | (35) |
2.800 Å | (97) |
2.774 Å | (100) |
2.035 Å | (20) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
22 : Hydration and low-? subsurface aqueous alteration (see also #23) |
Type Occurrence of Chesnokovite
General Appearance of Type Material:
Colorless to pale brownish aggregates of small, coarsely lamellar crystals. Crystals ranges from a few micrometers to 0.05 × 1 × 2 cm, and aggregates reach up to 4 × 6 × 10 cm.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, catalog no. 3419/1.
Geological Setting of Type Material:
Ussingite vein.
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., Chukanov, N.V., Zadov, A.E., Zubkova, N.V., Pushcharovsky, D.Yu. (2007) Chesnokovite, Na2[SiO2(OH)2]•8H2O, the first natural sodium orthosilicate from the Lovozero alkaline massif, Kola Peninsula, Russia: description and crystal structure of a new mineral. Proceedings of the Russian Mineralogical Society (Zapiski RMO): 136(2): 25-39.
Synonyms of Chesnokovite
Other Language Names for Chesnokovite
Russian:Чесноковит
Related Minerals - Strunz-mindat Grouping
9.AC. | Ahrensite | SiFe2O4 |
9.AC. | Poirierite | Mg2SiO4 |
9.AC.05 | Fayalite | Fe2+2SiO4 |
9.AC.05 | Forsterite | Mg2SiO4 |
9.AC.05 | Glaucochroite | CaMn2+SiO4 |
9.AC.05 | Kirschsteinite | CaFe2+SiO4 |
9.AC.05 | Laihunite | (Fe2+0.5◻0.5)Fe3+[SiO4] |
9.AC.05 | Liebenbergite | Ni2SiO4 |
9.AC.05 | Tephroite | Mn2+2SiO4 |
9.AC.10 | Monticellite | CaMgSiO4 |
9.AC.15 | Brunogeierite | Ge4+Fe2+2O4 |
9.AC.15 | Ringwoodite | (Mg,Fe2+)2SiO4 |
Other Information
Notes:
Highly unstable at normal atmospheric humidity and CO2 concentration; decomposes to thermonatrite and opal.
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 Chesnokovite
mindat.org URL:
https://www.mindat.org/min-29135.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
References for Chesnokovite
Reference List:
Localities for Chesnokovite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
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Kedykverpakhk Mountain, Lovozersky District, Murmansk Oblast, Russia