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Imandrite

A valid IMA mineral species

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Photos of Imandrite (2)

Search Photos of Imandrite

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Imandrite, etc.

Vuonnemiok River Valley, Khibiny Massif, Murmansk Oblast, Russia

Imandrite

Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia

Imandrite, etc.

Vuonnemiok River Valley, Khibiny Massif, Murmansk Oblast, Russia

Imandrite

Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia

Imandrite, etc.

Vuonnemiok River Valley, Khibiny Massif, Murmansk Oblast, Russia

Imandrite

Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia

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About ImandriteHide

Lake Imandra, Russia

Formula:

Na₁₂Ca₃Fe³⁺₂(Si₆O₁₈)₂

Colour:

Honey-yellow

Lustre:

Vitreous

Hardness:

5 - 5½

Specific Gravity:

2.93

Crystal System:

Orthorhombic

Member of:

Imandrite Subgroup > Lovozerite Group

Name:

Named by A.P. Khomyakov, N.M. Chernitsova, S.M. Sandomirskaya, and G.L. Vasil’eva for Lake Imanda, Kola Peninsula, Russia, near the type locality. It is the largest lake on the peninsula at 812 km2.

Type Locality:

ⓘ Vuonnemiok River Valley, Khibiny Massif, Murmansk Oblast, Russia

Lovozerite Group

Unique IdentifiersHide

Mindat ID:

2017

Long-form identifier:

mindat:1:1:2017:2

GUID
(UUID V4):

00716c02-a4d4-42f8-a622-a265a6c25857

IMA Classification of ImandriteHide

IMA status:

Approved

IMA Formula:

Na₁₂Ca₃Fe³⁺₂Si₁₂O₃₆

First published:

1979

Type description reference:

Khomyakov, A.P., Chernitsova, N.M., Sandomirskaya, S.M., Vasil’eva, G.L. (1979) Imandrite - a new mineral of lovozerite family. Mineralogiceskij Zhurnal: 1: 89-93.

Classification of ImandriteHide

Strunz-mindat (2023):

9.CJ.15b

9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si₆O₁₈]₁₂- 6-membered single rings (sechser-Einfachringe), without insular complex anions

Dana 8th ed.:

61.1.2b.1

61 : CYCLOSILICATES Six-Membered Rings
1 : Six-Membered Rings with [Si₆O₁₈] rings; possible (OH) and Al substitution

Hey's CIM Ref.:

14.25.8

14 : Silicates not Containing Aluminum
25 : Silicates of Fe, Ca and alkalis and of Fe, Mg, Ca and alkalis

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Ima	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 ImandriteHide

Lustre:

Vitreous

Transparency:

Translucent

Colour:

Honey-yellow

Hardness:

5 - 5½ on Mohs scale

Density:

2.93 g/cm³ (Measured) 2.92 g/cm³ (Calculated)

Optical Data of ImandriteHide

Type:

Biaxial (+)

RI values:

n_α = 1.605 n_β = 1.608 n_γ = 1.612

2V:

Measured: 75° , Calculated: 82°

Max Birefringence:

δ = 0.007

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Moderate

Dispersion:

r > v

Chemistry of ImandriteHide

Mindat Formula:

Na₁₂Ca₃Fe³⁺₂(Si₆O₁₈)₂

Elements listed:

Ca, Fe, Na, O, Si - search for minerals with similar chemistry

Common Impurities:

Ti,Zr,Mn,Mg

Crystallography of ImandriteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Cell Parameters:

a = 7.426(4) Å, b = 10.546(1) Å, c = 10.331(1) Å

Ratio:

a:b:c = 0.704 : 1 : 0.98

Unit Cell V:

809.07 Å³ (Calculated from Unit Cell)

Comment:

Space Group: Pmnn

Crystal StructureHide

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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)
0012468	Imandrite	Chernitsova N M, Pudovkina Z V, Voronkov A A, Ilyukhin V V, Pyatenko Y A (1980) Imandrite Na12Ca3Fe2[Si6O18]2 - a representative of a new branch in the lovozerite structural family Doklady Akademii Nauk SSSR 252 618-621		1980		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Imandrite'
loop_
_publ_author_name
'Chernitsova N M'
'Pudovkina Z V'
'Voronkov A A'
'Ilyukhin V V'
'Pyatenko Y A'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 252 
_journal_year 1980
_journal_page_first 618
_journal_page_last 621
_publ_section_title
;
 Imandrite Na12Ca3Fe2[Si6O18]2 - a representative of
 a new branch in the lovozerite structural family
;
_database_code_amcsd 0012468
_chemical_formula_sum 'Na6 Ca1.5 Fe Si6 O18'
_cell_length_a 10.331
_cell_length_b 10.546
_cell_length_c 7.426
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 809.068
_exptl_crystal_density_diffrn      2.916
_symmetry_space_group_name_H-M 'P m n n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '-x,y,z'
  'x,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Na1   0.00000   0.00000   0.50000   1.00000   0.00241
Na2   0.24070   0.23340   0.02070   1.00000   0.02039
Na3   0.50000   0.00000   0.00000   1.00000   0.05028
Ca   0.50000   0.25490   0.75630   0.75000   0.01216
Fe   0.00000   0.00000   0.00000   1.00000   0.01254
Si1   0.27230   0.99200   0.71520   1.00000   0.00874
Si2   0.50000   0.21840   0.25640   1.00000   0.00975
O1   0.00000   0.19900   0.93500   1.00000   0.02584
O2   0.12800   0.37600   0.75500   1.00000   0.03014
O3   0.50000   0.29000   0.07300   1.00000   0.01900
O4   0.36400   0.44400   0.69700   1.00000   0.02128
O5   0.32900   0.12100   0.78700   1.00000   0.02457
O6   0.24000   0.00000   0.50000   1.00000   0.03660

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.73 Å	(50)
3.33 Å	(60)
2.63 Å	(100)
1.853 Å	(70)
1.520 Å	(50)

Geological EnvironmentHide

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 ImandriteHide

Type Locality:

ⓘ Vuonnemiok River Valley, Khibiny Massif, Murmansk Oblast, Russia

General Appearance of Type Material:

Anhedral grains, 1-3 mm

Place of Conservation of Type Material:

Geology Museum, Kola Branch, Academy of Sciences, Apatity,5530; Mining Institute, St. Petersburg, 1298/1; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 80181; The Natural History Museum, London, England, 1994,10.

Geological Setting of Type Material:

Pegmatitic alkalic rocks

Associated Minerals at Type Locality:

Reference:

Khomyakov, A.P., Chernitsova, N.M., Sandomirskaya, S.M., Vasil’eva, G.L. (1979) Imandrite - a new mineral of lovozerite family. Mineralogiceskij Zhurnal: 1: 89-93.

Download:

https://rruff.info/rruff_1.0/uploads/MZ1_89.pdf

Synonyms of ImandriteHide

IMA1979-025

Other Language Names for ImandriteHide

German:Imandrit

Russian:Имандрит

Spanish:Imandrita

Relationship of Imandrite to other SpeciesHide

Member of:

Imandrite Subgroup > Lovozerite Group

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Imandrite associated with Eudialyte

Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.CJ.	Avdeevite	NaAl₄(Be₅Li)(Si₆O₁₈)₂(H₂O)_1-2	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mmc
9.CJ.	Nakkaalaaqite	K₂[Na₃Ca]LiCa₂Ti₂Be₄Si₁₂O₃₈	Orth. mmm (2/m 2/m 2/m) : Fddd
9.CJ.	Zolotarevite	Na₅Zr[Si₆O₁₅(OH)₃] · ₃H₂O	Trig. 3m (3 2/m) : R3m
9.CJ.	Beryllocordierite-Na	NaMg₄(Al₅Be)(AlSi₅O₁₈)₂ · 2H₂O	Orth. mmm (2/m 2/m 2/m) : Cccm
9.CJ.	Beryllosachanbińskiite-Na	NaMn₄(Al₅Be)(AlSi₅O₁₈)₂ · 2H₂O	Orth. mmm (2/m 2/m 2/m) : Cccm
9.CJ.05	Bazzite	Be₃Sc₂(Si₆O₁₈)	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.05	Beryl	Be₃Al₂(Si₆O₁₈)	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.05	Indialite	Mg₂Al₃(AlSi₅O₁₈)	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.05 va	Vorobyevite	Be₃Al₂(Si₆O₁₈)
9.CJ.05	Stoppaniite	Be₃Fe³⁺₂(Si₆O₁₈) · H₂O	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.05	Ferroindialite	(Fe²⁺,Mg)₂Al₄Si₅O₁₈	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.05	Johnkoivulaite	Cs[Be₂B]Mg₂Si₆O₁₈	Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
9.CJ.10	Cordierite	(Mg,Fe)₂Al₃(AlSi₅O₁₈)	Orth. mmm (2/m 2/m 2/m) : Cccm
9.CJ.10	Sekaninaite	(Fe,Mg)₂Al₃(AlSi₅O₁₈)	Orth. mmm (2/m 2/m 2/m) : Cccm
9.CJ.15a	Combeite	Na_4.5Ca_3.5Si₆O_17.5(OH)_0.5	Trig. 3m (3 2/m) : R3m
9.CJ.15a	Kazakovite	Na₆Mn²⁺Ti(Si₆O₁₈)	Trig. 3m (3 2/m) : R3m
9.CJ.15c	Koashvite	Na₆(Ca,Mn)(Ti,Fe)Si₆O₁₈ · H₂O	Orth. mmm (2/m 2/m 2/m)
9.CJ.15a	Lovozerite	Na₂Ca(Zr,Ti)(Si₆O₁₂)[(OH)₄O₂] · H₂O	Trig. 3 : R3
9.CJ.15a	Tisinalite	Na₃H₃(Mn,Ca,Fe)TiSi₆(O,OH)₁₈ · 2H₂O	Trig. 3m (3 2/m)
9.CJ.15a	Zirsinalite	Na₆(Ca,Mn²⁺,Fe²⁺)Zr(Si₆O₁₈)	Trig. 3m (3 2/m) : R3m
9.CJ.15a	Litvinskite	Na₂(◻,Na,Mn)ZrSi₆O₁₂(OH,O)₆	Mon. m : Bm
9.CJ.15a	Kapustinite	Na₆ZrSi₆O₁₆(OH)₂	Mon. 2/m : B2/m
9.CJ.15a	Townendite	Na₈ZrSi₆O₁₈	Trig. 3m (3 2/m) : R3m
9.CJ.25	Baratovite	KCa₇(Ti,Zr)₂Li₃Si₁₂O₃₆F₂	Mon. 2/m : B2/b
9.CJ.25	Katayamalite	KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂	Mon. 2/m : B2/b
9.CJ.25	Aleksandrovite	KCa₇Sn₂Li₃Si₁₂O₃₆F₂	Mon. 2/m : B2/b
9.CJ.30	Dioptase	CuSiO₃ · H₂O	Trig. 3 : R3
9.CJ.35	Kostylevite	K₂Zr(Si₃O₉) · H₂O	Mon. 2/m : P2₁/b
9.CJ.40	Petarasite	Na₅Zr₂(Si₆O₁₈)(Cl,OH) · 2H₂O	Mon. 2/m : P2₁/m
9.CJ.45	Gerenite-(Y)	(Ca,Na)₂(Y,REE)₃Si₆O₁₈ · 2H₂O	Tric. 1 : P1
9.CJ.50	Odintsovite	K₂Na₄Ca₃Ti₂Be₄Si₁₂O₃₈	Orth. mmm (2/m 2/m 2/m) : Fddd
9.CJ.55	Mathewrogersite	Pb₇FeAl₃GeSi₁₂O₃₆(OH,H₂O)₆	Trig.
9.CJ.60	Pezzottaite	Cs(Be₂Li)Al₂(Si₆O₁₈)	Trig. 3 : R3

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.

Internet Links for ImandriteHide

mindat.org URL:

https://www.mindat.org/min-2017.html
Please feel free to link to this page.

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External Links:

Look for Imandrite on Webmineral

Look for Imandrite on Wikipedia

Look for Imandrite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for ImandriteHide

Reference List:

Khomyakov, A.P., Chernitsova, N.M., Sandomirskaya, S.M., Vasil’eva, G.L. (1979) Imandrite - a new mineral of lovozerite family. Mineralogiceskij Zhurnal: 1: 89-93. (in Russian)

Khomyakov, A.P., Chernitsova, N.M., Sandomirskaya, S.M., Vasil’eva, G.L. (1979) Imandrite - a new mineral of lovozerite family. Mineralogiceskij Zhurnal: 1: 89-93.

Fleischer, Michael, Cabri, Louis J., Chao, G. Y., Pabst, Adolf (1980) New Mineral Names. American Mineralogist, 65 (7-8) 808-814

Chernitsova, N.M., Pudovkina, Z.V., Voronkov, A.A., Ilyukhin, V.V., Pyatenko, Y.A. (1980) Imandrite Na12Ca3Fe2[Si6O18]2 - a representative of a new branch in the lovozerite structural family. Doklady Akademii Nauk SSSR: 252: 618-621. (in Russian)

Pekov, I.V., Krivovichev, S.V., Zolotarev, A.A., Yakovenchuk, V.N., Armbruster, T., Pakhomovsky, Y.A. (2009) Crystal chemistry and nomenclature of the lovozerite group. European Journal of Mineralogy: 21: 1061-1071.

Ferdov, S., Lopes, A.M.L., Araujo, J.P., Shivachev, B., Titorenkova, R., Petrova, N., Nikolova, R. (2021): Three-Dimensional (3D) Microporous Iron Silicate with an Imandrite Type of Structure. Inorganic Chemistry, 60(7), 4563–4568.

(2023) Imandrite. Handbook of Mineralogy. Mineralogical Society of America

Localities for ImandriteHide

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 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). ~~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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


China
Shaanxi Baoji Taibai County ⓘ Shuangwang Au deposit	Yang, Junjie, Xingke Yang, Jianbo Li, Hujun He, Huixia Chao, and Pengfei Yi. (2022) "Constraints on the Genesis of the Shuangwang Gold Deposit in Qinling Orogen, Central China: Evidence from In Situ Trace Element and Sulfur Isotope" Minerals 12, no. 8: 995. https://doi.org/10.3390/min12080995

Russia
Murmansk Oblast Khibiny Massif ⓘ Rasvumchorr Mt	Tony Nikischer
ⓘ Vuonnemiok River Valley (TL)	Khomyakov, A.P., Chernitsova, N.M., Sandomirskaya, S.M., Vasil’eva, G.L. (1979) Imandrite - a new mineral of lovozerite family. Mineralogiceskij Zhurnal: 1: 89-93. *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*

Imandrite

About ImandriteHide

Unique IdentifiersHide

IMA Classification of ImandriteHide

Classification of ImandriteHide

Mineral SymbolsHide

Physical Properties of ImandriteHide

Optical Data of ImandriteHide

Chemistry of ImandriteHide

Crystallography of ImandriteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of ImandriteHide

Synonyms of ImandriteHide

Other Language Names for ImandriteHide

Relationship of Imandrite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for ImandriteHide

References for ImandriteHide

Localities for ImandriteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide