Mineralogy Database

Vergasovaite Mineral Data

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General Vergasovaite Information

Help on Chemical  Formula: Chemical Formula: Cu3O[(Mo,S)O4][SO4]
Help on Composition: Composition: Molecular Weight = 443.69 gm
   Zinc         1.47 %  Zn    1.83 % ZnO
   Copper      40.10 %  Cu   50.20 % CuO
   Molybdenum  17.30 %  Mo   25.95 % MoO3
   Sulfur       8.67 %  S    21.65 % SO3
   Oxygen      32.45 %  O
              ______        ______ 
              100.00 %       99.64 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2.8Zn0.1O(MoO4)0.8(SO4)1.2
Help on Environment: Environment: Found in a fumarole.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: North Breach of the Main Tolbachik fissure eruption, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Lidiya Pavlovna Vergasova (b. 1941), of the Institute of Volcanology, Russian Academy of Sciences, Petropavlovsk, Russia,
Help on Synonym: Synonym: IMA1998-009

Vergasovaite Image

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Comments: Green vergasovaite on matrix. Inset shows the sealed glass ampoule with the specimen inside to protect from deterioration.
Location: Northern Breakthrough, Tolbachik Volcano, Kamchatka, Russia. Scale: Specimen Size 1.5x1.5 cm.
© Diederik Visser

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  Alumoklyuchevskite   Vergasovaite

Comments: Green blebs to prismatic or needle-like crystals of alumoklyuchevskite associated with orange vergasovaite, co-type material.
Location: Main fracture, N breakthrough, Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: See Image.
© Rruff Database

Vergasovaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1007:1:2.0097
Help on Cell Dimensions: Cell Dimensions: a = 7.42, b = 6.741, c = 13.548, Z = 4; V = 677.65 Den(Calc)= 4.35
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.077(1)(104), 3.591(0.6)(020), 2.275(0.6)(124),2.5(0.6)(220), 2.542(0.6)(105,123), 3.342(0.6)(113), 3.391(0.6),

Physical Properties of Vergasovaite

Help on Cleavage: Cleavage: None
Help on Color: Color: Olive green.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow

Optical Properties of Vergasovaite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.131 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2126,KC= 0.1881
Ncalc = 1.82
Help on Optical Data: Optical Data: Biaxial (?), a=1.87, g=1.98, bire=0.1100
Help on RL Color: RL Color: Gray with light green to colorless internal reflections.

Calculated Properties of Vergasovaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Vergasovaite =4.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEVergasovaite = 47.30 barns/electron
U=PEVergasovaite x rElectron Density= 193.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vergasovaite is Not Radioactive

Vergasovaite Classification

Help on  Dana Class: Dana Class: (48)Anhydrous Molybdates and Tungstates
  (48.04)with miscellaneous formulae
  (48.04.03)Vergasovaite Series Vergasovaite! Cu3O[(Mo,S)O4][SO4] P nma 2/m 2/m 2/m Schlegelite! Bi7O4(MoO4)2(AsO4)3 Pnca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.BB.30 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BB -With medium-sized cations
07.BB.30 Vergasovaite! Cu3O[(Mo,S)O4][SO4] P nma 2/m 2/m 2/m

Other Vergasovaite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(AmMin, V85, p264) OPTIC PROP.(AmMin, V85, p264)
Help on See Also: See Also: Links to other databases for Vergasovaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 07.BB.30





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