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Ericlaxmanite

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About EriclaxmaniteHide

Erik Laxmann
Formula:
Cu4O(AsO4)2
Colour:
Green to dark green
Lustre:
Vitreous
Hardness:
Specific Gravity:
5.036 (Calculated)
Crystal System:
Triclinic
Name:
Named in honour of the Russian mineralogist, geologist, geographer, biologist and chemist Erik Gustavovich Laxmann (July 27, 1737 – January 6, 1796).
Dimorph of:
This page provides mineralogical data about Ericlaxmanite.


Classification of EriclaxmaniteHide

Approved
Approval Year:
2013

Physical Properties of EriclaxmaniteHide

Vitreous
Transparency:
Transparent
Colour:
Green to dark green
Hardness:
3½ on Mohs scale
Comment:
~3½
Tenacity:
Brittle
Density:
5.036 g/cm3 (Calculated)

Optical Data of EriclaxmaniteHide

Type:
Biaxial (-)
RI values:
nα = 1.870(10) nβ = 1.900(10) nγ = 1.915(10)
2V:
Measured: 60° (15)
Max Birefringence:
δ = 0.045
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of EriclaxmaniteHide

Formula:
Cu4O(AsO4)2

Crystallography of EriclaxmaniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.4271(4) Å, b = 7.6585(4) Å, c = 8.2249(3) Å
α = 98.396(4)°, β = 112.420(5)°, γ = 98.397(5)°
Ratio:
a:b:c = 0.839 : 1 : 1.074
Unit Cell V:
361.11 ų
Z:
2
Morphology:
Tabular, lamellar, equant or short prismatic crystals up to 0.1 mm in size.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.868(46)
3.685(100)
3.063(71)
2.957(58)
2.777(98)
2.698(46)
2.449(37)
2.201(51)
Comments:
From Type Description.

Type Occurrence of EriclaxmaniteHide

General Appearance of Type Material:
Clusters of tabular, lamellar, equant or short prismatic crystals up to 0.1 mm; pseudomorphs after urusovite crystal crusts up to 1.5 cm×2 cm in area.
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 4387/1
Associated Minerals at Type Locality:

Synonyms of EriclaxmaniteHide

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 EriclaxmaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2013) Ericlaxmanite, IMA 2013-022. 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, 1553–1569

Internet Links for EriclaxmaniteHide

Localities for EriclaxmaniteHide

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) Ericlaxmanite, IMA 2013-022. 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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