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Grigorievite

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Formula:
Cu3Fe3+2Al2(VO4)6
Colour:
black
Lustre:
Sub-Metallic
Hardness:
5
Specific Gravity:
3.67 (Calculated)
Crystal System:
Triclinic
Name:
Grigorievite (Cyrillic: cphcop{ebhq) is named after Professor Dmitry Pavlovich Grigoriev (1909–2003) who worked at the Saint Petersburg Mining Institute. He was a founder of the ontogenesis of minerals as a specific branch of mineralogy, a specialist in general and theoretical aspects of mineralogy, in the synthesis of analogues of minerals, in extraterrestrial mineralogy and in the teaching of mineralogy.
Structurally related to howardevansite and koksharovite.


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Classification of GrigorieviteHide

Approved

Pronounciation of GrigorieviteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of GrigorieviteHide

Sub-Metallic
Transparency:
Opaque
Colour:
black
Streak:
reddish-brown
Hardness:
Hardness:
VHN20=368 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.67 g/cm3 (Calculated)

Chemical Properties of GrigorieviteHide

Formula:
Cu3Fe3+2Al2(VO4)6

Crystallography of GrigorieviteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.0217 Å, b = 9.6858 Å, c = 6.5475 Å
α = 103.645°, β = 102.369°, γ = 106.281°
Ratio:
a:b:c = 0.828 : 1 : 0.676
Unit Cell V:
452.60 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.36(27)
4.718(29)
4.417(24)
3.671(26)
3.426(23)
3.141(100)
3.044(92)
2.811(26)
Comments:
From Type Description.

Type Occurrence of GrigorieviteHide

General Appearance of Type Material:
prismatic to thick tabular crystals up to 40 x 100 μm (typically less than 50 μm) in size
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4278/1
Geological Setting of Type Material:
Second scoria cone, Tolbachik volcano, Kamchatka Peninsula, Kamchatka Oblast’, Far- Eastern Region, Russia (55º41’N 160º14’E)
Associated Minerals at Type Locality:

Synonyms of GrigorieviteHide

Relationship of Grigorievite to other SpeciesHide

Other Members of this group:
HowardevansiteNaCuFe2(VO4)3Tric. 1 : P1
KoksharoviteCaMg2Fe3+4(VO4)6Tric. 1 : P1
ZiminaiteFe3+ 6 (VO4)6Tric. 1 : P1

Other InformationHide

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 GrigorieviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zubkova, N.V., Murashko, M.N., Yapaskurt , V.O., Polekhovsky, Y.S., Kartashov, P.M. and Pushcharovsky, D.Y. (2013) Grigorievite, IMA 2012-047. CNMNC Newsletter No. 15, February 2013, page 15; Mineralogical Magazine, 77, 1-12.
Pekov, I. V., Zubkova, N. V., Yapaskurt, V. O., Kartashov, P. M., Polekhovsky, Y. S., Murashko, M. N., & Pushcharovsky, D. Y. (2014). Koksharovite, CaMg2Fe3+ 4 (VO4) 6, and grigorievite, Cu3Fe3+ 2Al2 (VO4) 6, two new howardevansite-group minerals from volcanic exhalations. European Journal of Mineralogy, 26, 667–677

Internet Links for GrigorieviteHide

Localities for GrigorieviteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Far-Eastern Region
    • Kamchatka Oblast'
      • Tolbachik volcano
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
Pekov, I.V., Zubkova, N.V., Murashko, M.N., Yapaskurt , V.O., Polekhovsky, Y.S., Kartashov, P.M. and Pushcharovsky, D.Y. (2013) Grigorievite, IMA 2012-047. CNMNC Newsletter No. 15, February 2013, page 15; Mineralogical Magazine, 77, 1-12.
Mineral and/or Locality  
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