Tugarinovite is a rare molybdenum oxide mineral with formula MoO2. It occurs as a primary mineral phase associated with metasomatism in a sulfur deficient reducing environment. In the type locality it occurs with uraninite, molybdenite, galena, zircon and wulfenite.[2]

Tugarinovite
Tugarinovite
General
CategoryOxide mineral
Formula
(repeating unit)
MoO2
IMA symbolTug[1]
Strunz classification4.DB.05
Crystal systemMonoclinic
Crystal classPrismatic H-M symbol (2/m)
Space groupP21/c (no. 14)
Unit cella = 5.6 Å, b = 4.85 Å, c = 5.53 Å; β = 119.37°
Identification
ColorDark lilac-brown
Crystal habitCrystals are tabular striated prisms
TwinningPolysynthetic
Mohs scale hardness4.6
LusterGreasy to metallic
StreakGreenish gray
DiaphaneitySemitransparent
Specific gravity6.58 (calculated)
Optical propertiesBiaxial
PleochroismLight gray to dark pink; pale yellow to bluish olive-brown in reflected light
References[2][3][4]

Tugarinovite was first described for an occurrence in the Lenskoye molybdenum–uranium deposit in the Amurskaya Oblast, Far-Eastern Region, Russia. It was named for geochemist Ivan Alekseevich Tugarinov of the Vernadskii Institute in Moscow.[2][3] In addition to its type locality in Russia it has been reported from the Allende meteorite in Chihuahua, Mexico, the Nansei Archipelago of Japan and Bohemia in the Czech Republic.[3]

References

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  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b c Handbook of Mineralogy
  3. ^ a b c Tugarinovite on Mindat.org
  4. ^ Tugarinovite on Webmin