Eliseevite
A valid IMA mineral species
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About Eliseevite
Nikolai A. Eliseev
Formula:
LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O
Colour:
pale creamy to colorless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.68
Crystal System:
Monoclinic
Name:
In honor of Nikolai Aleksandrovich Eliseev (Dec 7 1897– June 24 1966), a remarkable Russian geologist and petrologist, Professor at Leningrad State University, in recognition of his contributions to the geology and petrology of metamorphic and alkaline complexes.
Closely (i.a., chemically) related to lintisite and punkaruaivite.
AM-4 family of natural titanosilicates (compare kukisvumite & manganokukisvumite).
AM-4 family of natural titanosilicates (compare kukisvumite & manganokukisvumite).
Unique Identifiers
Mindat ID:
40287
Long-form identifier:
mindat:1:1:40287:9
GUID
(UUID V4):
(UUID V4):
689ca35f-1b7b-4c48-8668-037e942ac78d
IMA Classification of Eliseevite
Classification of Eliseevite
9.DB.17
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
65.1.1.2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
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 |
|---|---|---|
| Esv | 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 Eliseevite
Vitreous
Transparency:
Transparent
Colour:
pale creamy to colorless
Streak:
white
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{100}
{100}
Fracture:
Splintery
Density:
2.68(4) g/cm3 (Measured) 2.706 g/cm3 (Calculated)
Optical Data of Eliseevite
Type:
Biaxial (-)
RI values:
nα = 1.665(2) nβ = 1.712(2) nγ = 1.762(5)
2V:
Measured: 85° (5), Calculated: 89.3°
Max Birefringence:
δ = 0.097
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
Dispersion:
medium, r < v.
Chemistry of Eliseevite
Mindat Formula:
LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O
Crystallography of Eliseevite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 27.48(1) Å, b = 8.669(4) Å, c = 5.246(2) Å
β = 90.782(8)°
β = 90.782(8)°
Ratio:
a:b:c = 3.17 : 1 : 0.605
Unit Cell V:
1,249.61 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 13.76 Å | (100) |
| 6.296 Å | (60) |
| 4.642 Å | (40) |
| 4.334 Å | (40) |
| 3.577 Å | (80) |
| 3.005 Å | (70) |
| 2.881 Å | (70) |
| 2.710 Å | (50) |
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 |
Type Occurrence of Eliseevite
General Appearance of Type Material:
long-prismatic to fibrous crystals (up to 2 mm long) growing in voids of natrolitized sodalite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Mineralogical Museum of St Petersburg State University, Russia, and the Geological and the Mineralogical Museum of the Geological Institute of the Kola Science Centre, Apatity,
Russia, catalogue number
Russia, catalogue number
Geological Setting of Type Material:
hydrothermally altered ussingite pegmatites within the layered complex of malignites, foyaites, and foidolites with lenses of poikilitic nepheline syenites. Formed as a result of alteration of murmanite.
Associated Minerals at Type Locality:
Synonyms of Eliseevite
Related Minerals - Strunz-mindat Grouping
| 9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 |
| 9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 |
| 9.DB.05 | Ferrocarpholite | Fe2+Al2Si2O6(OH)4 |
| 9.DB.05 | Magnesiocarpholite | MgAl2Si2O6(OH)4 |
| 9.DB.05 | Potassiccarpholite | K(Mn2+,Li)2Al4Si4O12(OH,F)8 |
| 9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 |
| 9.DB.10 | Lorenzenite | Na2Ti2(Si2O6)O3 |
| 9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O |
| 9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O |
| 9.DB.20 | Kukisvumite | Na6ZnTi4(Si8O24)O4 · 4H2O |
| 9.DB.20 | Manganokukisvumite | Na6MnTi4(Si8O24)O4 · 4H2O |
| 9.DB.25 | Vinogradovite | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3 |
| 9.DB.25 | Paravinogradovite | Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O |
| 9.DB.30 | Nchwaningite | Mn2+2(SiO3)(OH)2 · H2O |
| 9.DB.35 | Plancheite | Cu8(Si8O22)(OH)4 · H2O |
| 9.DB.40 | Shattuckite | Cu5(Si2O6)2(OH)2 |
| 9.DB.40 | UM2005-31-SiO:CuH | Cu11(SiO4)(OH)18 · 9H2O (?) |
| 9.DB.45 | Aerinite | (Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12] |
| 9.DB.50 | Capranicaite | KCaNaAl4B4Si2O18 |
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 Eliseevite
mindat.org URL:
https://www.mindat.org/min-40287.html
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References for Eliseevite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2010) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 5. Mineralogical Magazine, 74 (5) 859-862 doi:10.1180/s0026461x00056887
Yakovenchuk, V. N., Ivanyuk, G. Y., Krivovichev, S. V., Pakhomovsky, Y. A., Selivanova, E. A., Korchak, J. A., Men'shikov, Y. P., Drogobuzhskaya, S. V., Zalkind, O. A. (2011) Eliseevite, Na1.5Li[Ti2Si4O12.5(OH)1.5] · 2H2O, a new microporous titanosilicate from the Lovozero alkaline massif (Kola Peninsula, Russia) American Mineralogist, 96 (10) 1624-1629 doi:10.2138/am.2011.3726
Localities for Eliseevite
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) | |
| Williams et al. (2010) +1 other reference |
| Yakovenchuk et al. (2011) |
Quick NavTopAbout EliseeviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsStrunz-MindatOther InformationInternet Links References Localities Locality List
Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia