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Chesnokovite

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Russian mineralogist Boris Valentinovich Chesnokov
Formula:
Na2[SiO2(OH)2] · 8H2O
System:
Orthorhombic
Name:
In honor of Russian mineralogist Boris Valentinovich Chesnokov (11 June 1928 - 25 October 2005).
Alters to Thermonatrite and Opal when left exposed to normal atmospheric humidity.

Classification of Chesnokovite

Approved 2006
9.AC.20

9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
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First Recorded Occurrence of Chesnokovite

General Appearance of First Recorded Material:
colorless to pale brownish aggregates of small, coarsely lamellar crystals
Geological Setting of First Recorded Material:
Ussingite vein
Associated Minerals at First Recorded Locality:

Crystallography of Chesnokovite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Ibca
Cell Parameters:
a = 11.7119Å, b = 16.973Å, c = 11.5652Å
Ratio:
a:b:c = 0.69 : 1 : 0.681
Unit Cell Volume:
V 2,299.00 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.001 (30)
4.788 (42)
3.847 (89)
2.932 (42)
2.832 (35)
2.800 (97)
2.774 (100)
2.035 (20)

Chemical Properties of Chesnokovite

Formula:
Na2[SiO2(OH)2] · 8H2O
Essential elements:
All elements listed in formula:

Relationship of Chesnokovite to other Species

9.AC.05FayaliteFe22+SiO4
9.AC.05ForsteriteMg2SiO4
9.AC.05GlaucochroiteCaMn2+SiO4
9.AC.05KirschsteiniteCaFe2+SiO4
9.AC.05LaihuniteFe2+Fe23+(SiO4)2
9.AC.05Liebenbergite(Ni,Mg)2SiO4
9.AC.05TephroiteMn22+SiO4
9.AC.10MonticelliteCaMgSiO4
9.AC.15BrunogeieriteFe22+Ge4+O4
9.AC.15Ringwoodite(Mg,Fe2+)2SiO4

Other Names for Chesnokovite

Name in Other Languages:

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.

References for Chesnokovite

Reference List:
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.

Internet Links for Chesnokovite

Localities for Chesnokovite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Lovozero Massif
IMA website
Mineral and/or Locality  
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