Yurmarinite
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About Yurmarinite
Formula:
Na7(Fe3+,Mg,Cu)4(AsO4)6
Colour:
Pale green or pale yellowish green to colourless
Hardness:
4½
Specific Gravity:
4.00 (Calculated)
Crystal System:
Trigonal
Name:
Named in honour of the Russian mineralogist, petrologist and specialist in studies of ore deposits, Professor Yuriy B. Marin (b. 1939).
This page provides mineralogical data about Yurmarinite.
Classification of Yurmarinite
Approved
Physical Properties of Yurmarinite
Transparency:
Transparent
Colour:
Pale green or pale yellowish green to colourless
Hardness:
4½ on Mohs scale
Hardness Data:
Estimated
Comment:
~4½
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
One direction of imperfect cleavage
One direction of imperfect cleavage
Fracture:
Irregular/Uneven
Density:
4.00 g/cm3 (Calculated)
Optical Data of Yurmarinite
Type:
Uniaxial (-)
RI values:
nω = 1.748() nε = 1.720(3)
Max Birefringence:
δ = 0.028

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Chemical Properties of Yurmarinite
Formula:
Na7(Fe3+,Mg,Cu)4(AsO4)6
Crystallography of Yurmarinite
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3c
Setting:
R3c
Cell Parameters:
a = 13.7444(2) Å, c = 18.3077(3) Å
Ratio:
a:c = 1 : 1.332
Unit Cell V:
2995.13 ų
Z:
6
Morphology:
Well-shaped, equant crystals showing {101}, {011}, {100}, {110} and {001}.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.28 | (45) |
4.375 | (33) |
3.440 | (35) |
3.217 | (36) |
2.999 | (30) |
2.841 | (100) |
2.696 | (29) |
2.598 | (43) |
Comments:
From Type Description.
Type Occurrence of Yurmarinite
General Appearance of Type Material:
Well-shaped, equant crystals, up to 0.3 mm in size, their clusters up to 0.5 mm and thin, interrupted crystal crusts up to 3 mm × 3 mm on volcanic scoria.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4389/1
Geological Setting of Type Material:
Sublimates
Associated Minerals at Type Locality:
Synonyms of Yurmarinite
Other Information
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 Yurmarinite
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., Lykova, I.S., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2013) Yurmarinite, IMA 2013-033. CNMNC Newsletter No. 16, August 2013, page 2708; Mineralogical Magazine, 77, 2695-2709.
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Lykova, I.S., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Yu. (2014): New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. I. Yurmarinite, Na7(Fe3+,Mg,Cu)4(AsO4)6. Mineralogical Magazine, 78, 905-917
Internet Links for Yurmarinite
mindat.org URL:
https://www.mindat.org/min-43895.html
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Please feel free to link to this page.
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Localities for Yurmarinite
Locality List




All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Lykova, I.S., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2013) Yurmarinite, IMA 2013-033. CNMNC Newsletter No. 16, August 2013, page 2708; Mineralogical Magazine, 77, 2695-2709. |
Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka Krai, Russia