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Mineevite-(Y)
A valid IMA mineral species
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About Mineevite-(Y)
Dmitry A. Mineev
Formula:
Na25Ba(Y,Gd,Dy)2(CO3)11(HCO3)4(SO4)2F2Cl
Colour:
Pale green to yellowish-green.
Lustre:
Vitreous, Pearly
Hardness:
4
Specific Gravity:
2.85
Crystal System:
Hexagonal
Name:
Named by A.P. Khomjakov, L.I. Polezhaeva, N.A. Yamnova, and D.Y. Pushcharovsky in 1992 honor of Dmitrii (Dmitry) Andreevich Mineev (Дмитрий Андреевич Минеев) (14 April 1935, Moscow, USSR - 5 August 1992, Moscow, Russia), Russian mineralogist and geochemist, and specialist in the field of geochemistry of rare earth elements at the Moscow Geological Prospecting Institute. He was a founder of the Russian Academy of Sciences and its first president. The suffix follows the Levinson rule for minerals with essential REE, denoting predominant yttrium.
This page provides mineralogical data about Mineevite-(Y).
Unique Identifiers
Mindat ID:
2718
Long-form identifier:
mindat:1:1:2718:8
Similar Names
| Manaevite-(Ce) | A valid IMA mineral species | (Ca13Ce4[H2O]2)Mg(Al3Mg)(Mg3Ti3Fe23+)(◻4)◻[Si2O7]4[(SiO4)8(H4O4)2]O(OH)9 |
| Minervite | A synonym of Taranakite |
IMA Classification of Mineevite-(Y)
Approved
IMA Formula:
Na25BaY2(CO3)11(HCO3)4(S6+O4)2F2Cl
Approval year:
1991
First published:
1992
Classification of Mineevite-(Y)
5.BF.25
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3
17.1.14.1
17 : COMPOUND CARBONATES
1 : Miscellaneous
17 : COMPOUND CARBONATES
1 : Miscellaneous
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 |
|---|---|---|
| Mev-Y | 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 Mineevite-(Y)
Vitreous, Pearly
Transparency:
Transparent
Comment:
Vitreous luster on fractures, pearly on cleavage.
Colour:
Pale green to yellowish-green.
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{0001}
{0001}
Fracture:
Step-Like
Density:
2.85(2) g/cm3 (Measured) 2.84 g/cm3 (Calculated)
Optical Data of Mineevite-(Y)
Type:
Uniaxial (-)
RI values:
nω = 1.536 nε = 1.51
Max. Birefringence:
δ = 0.026
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:
None to Very Low
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 uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Chemistry of Mineevite-(Y)
Mindat Formula:
Na25Ba(Y,Gd,Dy)2(CO3)11(HCO3)4(SO4)2F2Cl
Element Weights:
Crystallography of Mineevite-(Y)
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 8.811(7) Å, c = 37.03(3) Å
Ratio:
a:c = 1 : 4.203
Unit Cell V:
2,489.63 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0015592 | Mineevite-(Y) | Yamonva N A, Pushcharovskii D Y, Vyatkin S V, Khomyakov A P (1992) Crystal structure of the new native sulfate-carbonate Na25BaTR2(CO3)11(HCO3)4(SO4)2F2Cl Soviet Physics Crystallography 37 753-756 | 1992 | Lovozero pegmatites, Kola peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.829 Å | (100) |
| 2.270 Å | (90) |
| 2.531 Å | (71 broad) |
| 2.659 Å | (51broad) |
| 1.660 Å | (46) |
| 3.32 Å | (40) |
| 7.61 Å | (39) |
Comments:
Mt. Alluaiv, Kola Peninsula, Russia. The data are from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47b : [Sulfates and sulfites] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Mineevite-(Y)
General Appearance of Type Material:
Pale green to yellowish green irregular grains 0.5-1.0 cm in diameter.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia, p575/1.
Geological Setting of Type Material:
Pegmatites in a differentiated alkalic massif.
Associated Minerals at Type Locality:
Synonyms of Mineevite-(Y)
Other Language Names for Mineevite-(Y)
Related Minerals - Strunz-mindat Grouping
| 5.BF.05 | Northupite | Na3Mg(CO3)2Cl |
| 5.BF.05 | Manganotychite | Na6Mn2(CO3)4(SO4) |
| 5.BF.05 | Tychite | Na6Mg2(CO3)4(SO4) |
| 5.BF.05 | Ferrotychite | Na6(Fe,Mn,Mg)2(CO3)4(SO4) |
| 5.BF.10 | Sidorenkite | Na3Mn2+(CO3)(PO4) |
| 5.BF.10 | Crawfordite | Na3Sr(CO3)(PO4) |
| 5.BF.10 | Bonshtedtite | Na3Fe2+(CO3)(PO4) |
| 5.BF.10 | Bradleyite | Na3Mg(CO3)(PO4) |
| 5.BF.15 | Daqingshanite-(Ce) | (Sr,Ca,Ba)3(Ce,La)(CO3)3-x(PO4)(OH,F)2x |
| 5.BF.20 | Reederite-(Y) | (Na,Mn)15Y2(CO3)9(FSO3)Cl |
| 5.BF.30 | Brianyoungite | Zn3(CO3,SO4)(OH)4 |
| 5.BF.35 | Philolithite | Pb12Mn2+(Mg,Mn2+)2(Mn2+,Mg)4(CO3)4(SO4)O6(OH)12Cl4 |
| 5.BF.40 | Leadhillite | Pb4(CO3)2(SO4)(OH)2 |
| 5.BF.40 | Macphersonite | Pb4(CO3)2(SO4)(OH)2 |
| 5.BF.40 | Susannite | Pb4(CO3)2(SO4)(OH)2 |
| 5.BF.45 | Peatite-(Y) | Li4Na12Y12(PO4)12(CO3)4(F,OH)8 |
| 5.BF.50 | Ramikite-(Y) | Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4 |
Fluorescence of Mineevite-(Y)
Weak yellowish green fluorescence.
Other Information
IR Spectrum:
The infrared pattern has absorption bands (s = strong) at 3400-3500, 1790, 1740, 1600, 1540s, 1520s, 1438, 1383s, 1154s, 1128, 1077, 1060,920, 897s, 882, 870s, 830, 766s, 728, 708, 690, 650s, 635, and 460 cm-1.
Thermal Behaviour:
DTA: Endotherms at 410, 500, and 690°C (decarbonation and dehydroxylation).
TGA: Weight losses of 2.5% from 20-220°C (dissociation of nahcolite and other impurities), 8.1% from 220-480°C, 1.9% from 480-620°C, and 1.9% from 620-1000°C.
TGA: Weight losses of 2.5% from 20-220°C (dissociation of nahcolite and other impurities), 8.1% from 220-480°C, 1.9% from 480-620°C, and 1.9% from 620-1000°C.
Notes:
Stable in water, but readily decomposed in dilute acids (including citric) with effervescence.
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 Mineevite-(Y)
mindat.org URL:
https://www.mindat.org/min-2718.html
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Please feel free to link to this page.
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References for Mineevite-(Y)
Reference List:
Khomjakov, A. P., Polezhaeva, L. I., Yamnova, N. A., Pushcharovsky, D. Y. (1992) Mineevite-(Y) — Na25Ba(Y,Gd,Dy)2(CO3)11(HCO3)4(SO4)2F2 — a new mineral. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 121 (6) 138-142
Localities for Mineevite-(Y)
Showing 1 localities.
symbol to view information about a locality.
The 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.
Russia (TL) | |
| Khomjakov et al. (1992) +1 other reference |
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Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia