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Kozyrevskite

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About KozyrevskiteHide

Formula:
Cu4O(AsO4)2
Colour:
Bright grass green to light yellowish green
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.934 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honour of the Russian geographer, traveller and military man Ivan Petrovich Kozyrevskiy (1680, Yakutsk – 2 December 1734, Moscow), one of the first researchers of Kamchatka.
Dimorph of:
Known as a synthetic compound.


Classification of KozyrevskiteHide

Approved
Approval Year:
2013

Physical Properties of KozyrevskiteHide

Vitreous
Transparency:
Transparent
Colour:
Bright grass green to light yellowish green
Hardness:
3½ on Mohs scale
Comment:
~3½
Tenacity:
Brittle
Density:
4.934 g/cm3 (Calculated)

Chemical Properties of KozyrevskiteHide

Formula:
Cu4O(AsO4)2

Crystallography of KozyrevskiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 8.2581(4) Å, b = 6.4026(4) Å, c = 13.8047(12) Å
Ratio:
a:b:c = 1.29 : 1 : 2.156
Unit Cell V:
729.9 ų
Z:
4
Morphology:
Prismatic crystals up to 0.3 mm long in clusters and as individual crystals.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.455 (100)
3.194 (72)
3.081 (50)
2.910 (69)
2.861 (48)
2.732 (82)
2.712 (87)
2.509 (92)

Type Occurrence of KozyrevskiteHide

Place of Conservation of Type Material:
Type material is deposited in the collections of the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4388/1.
Associated Minerals at Type Locality:

Synonyms of KozyrevskiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Wulffite1 photo of Kozyrevskite associated with Wulffite on mindat.org.
Lammerite1 photo of Kozyrevskite associated with Lammerite on mindat.org.

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 KozyrevskiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Adams, R.D., Layland, R., Payen, C. (1995) Cu4(AsO4)2(O): A new copper arsenate with unusual low temperature magnetic properties. Inorganic Chemistry: 34: 5397-5398.
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Y. (2013) Kozyrevskite, IMA 2013-023. CNMNC Newsletter No. 16, August 2013, page 2706. Mineralogical Magazine: 77: 2695-2709.
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Yu. (2014) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. II. Ericlaxmanite and kozyrevskite, two natural modifications of Cu4O(AsO4)2. Mineralogical Magazine: 78: 1553–1569.

Internet Links for KozyrevskiteHide

Localities for KozyrevskiteHide

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)
            • Second scoria cone
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2013) Kozyrevskite, IMA 2013-023. CNMNC Newsletter No. 16, August 2013, page 2706; Mineralogical Magazine, 77, 2695-2709.; Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Yu. (2014): New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. II. Ericlaxmanite and kozyrevskite, two natural modifications of Cu4O(AsO4)2. Mineralogical Magazine, 78, 1553–1569
Mineral and/or Locality  
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