Balyakinite
A valid IMA mineral species
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About Balyakinite
Formula:
Cu(TeO3)
Colour:
Greyish-green, bluish-green
Hardness:
3½
Specific Gravity:
5.6
Crystal System:
Orthorhombic
Name:
Named in honor of Tatyana Stepanovna Balyakina (Татьяна Степановна Балякина) (1906–1986), Geology Instructor, Moscow University, Moscow, Russia.
Alters to teineite.
Unique Identifiers
Mindat ID:
501
Long-form identifier:
mindat:1:1:501:0
IMA Classification of Balyakinite
Approved
IMA Formula:
Cu2+Te4+O3
Approval year:
1980
First published:
1980
Classification of Balyakinite
4.JK.15
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
Dana 7th ed.:
34.1.3.1
34.1.3.1
34 : SELENITES, TELLURITES AND SULFITES
1 : A(XO3)
34 : SELENITES, TELLURITES AND SULFITES
1 : A(XO3)
28.3.1
28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites
28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Byk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Balyakinite
Transparency:
Translucent
Colour:
Greyish-green, bluish-green
Streak:
Pale bluish-green
Hardness:
3½ on Mohs scale
Hardness:
VHN10=80 - 125 kg/mm2 - Vickers
Cleavage:
None Observed
Density:
5.6 g/cm3 (Measured) 5.64 g/cm3 (Calculated)
Optical Data of Balyakinite
Type:
Biaxial (-)
RI values:
nα = 2.11 nβ = 2.18 nγ = 2.22
2V:
Measured: 80° , Calculated: 72°
Max. Birefringence:
δ = 0.110
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Anisotropism:
slight
Dispersion:
strong
Colour in reflected light:
gray, bluish gray
Pleochroism:
Weak
Comments:
Shades of green
Chemistry of Balyakinite
Mindat Formula:
Cu(TeO3)
Element Weights:
Elements listed:
Crystallography of Balyakinite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Cell Parameters:
a = 7.6 Å, b = 12.7 Å, c = 5.83 Å
Ratio:
a:b:c = 0.598 : 1 : 0.459
Unit Cell V:
562.71 ų (Calculated from Unit Cell)
Z:
8
Comment:
Space Group: Pmcn.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0011931 | Balyakinite | Lindqvist O (1972) The crystal structure of CuTeO3 Acta Chemica Scandinavica 26 1423-1430 | 1972 | synthetic | 0 | 293 | |
| 0011928 | Balyakinite | Lindqvist O (1971) On the crystal structures of CuTeO3 and CuTe2O5 Acta Chemica Scandinavica 25 740-740 | 1971 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.85 Å | (10) |
| 2.84 Å | (8) |
| 3.09 Å | (5) |
| 1.711 Å | (5) |
| 4.34 Å | (4) |
| 3.18 Å | (4) |
| 2.28 Å | (3.5) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Balyakinite
Co-Type Localities:
General Appearance of Type Material:
Integrowths up to 0.5mm and as very small short prismatic crystals.
Place of Conservation of Type Material:
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
In veinlets in aggregates of tetrahedrite, chalcopyrite, and tellurides.
Associated Minerals at Type Locality:
Synonyms of Balyakinite
Other Language Names for Balyakinite
Related Minerals - Strunz-mindat Grouping
| 4.JK. | Matthiasweilite | PbTe4+O3 |
| 4.JK.05 | Walfordite | (Fe3+,Te6+)Te4+3O8 |
| 4.JK.05 | Winstanleyite | TiTe4+3O8 |
| 4.JK.10 | Zincospiroffite | Zn2Te4+3O8 |
| 4.JK.10 | Spiroffite | Mn2+2Te4+3O8 |
| 4.JK.20 | Rajite | Cu(Te4+2O5) |
| 4.JK.25 | Carlfriesite | CaTe4+2Te6+O8 |
| 4.JK.30 | Chenzhangruite | MnFe2+Te4+4O10 |
| 4.JK.30 | Stankeithite | Mn2+Mn2+Te4+4 O10 |
| 4.JK.30 | Paulhlavaite | CaCuTe4+ 4O10 |
| 4.JK.30 | Denningite | CaMn2+Te4+4O10 |
| 4.JK.35 | Chekhovichite | Bi2Te4+4O11 |
| 4.JK.40 | Smirnite | Bi2Te4+O5 |
| 4.JK.45 | Choloalite | (Cu,Sb)3(Pb,Ca)3(TeO3)6Cl |
| 4.JK.50 | Fairbankite | Pb2+12(Te4+O3)11(SO4) |
| 4.JK.55 | Plumbotellurite | Pb(TeO3) |
| 4.JK.60 | Magnolite | [Hg2]2+[Te4+O3] |
| 4.JK.65 | Moctezumite | Pb(UO2)(TeO3)2 |
| 4.JK.70 | Schmitterite | (UO2)(TeO3) |
| 4.JK.75 | Cliffordite | (UO2)Te4+3O7 |
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.
Internet Links for Balyakinite
mindat.org URL:
https://www.mindat.org/min-501.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Balyakinite
Localities for Balyakinite
Showing 5 localities.
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Belgium | |
| Krygier (1982) +1 other reference |
| Krygier (1982) +2 other references | |
Russia (TL) | |
| Spiridonov (1980) +1 other reference |
| Spiridonov (1980) +1 other reference |
| Spiridonov et al. (2009, April) |
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The
Salmchâteau, Vielsalm, Luxembourg, Wallonia, Belgium