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Nikmelnikovite

Collectors Summary

Crystal System trigonal, R3

Chemism

Chem­ical formula

Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Silicium, Sauerstoff, Wasserstoff

Unit weight: 1677.9132546 u; Number of atoms in the formula: 89

Info

Empirical formula:

Ca12FeFe3Al3(SiO4)6(OH)20

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.20

20

22.47

1.0079470

20.1589400

Oxygen

O

41.96

44

49.44

15.9994300

703.9749200

Aluminium

Al

4.82

3

3.37

26.9815382

80.9446146

Silicon

Si

10.04

6

6.74

28.0855300

168.5131800

Calcium

Ca

28.66

12

13.48

40.0784000

480.9408000

Iron

Fe

13.31

4

4.49

55.8452000

223.3808000

Strunz 9th edi­tion incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

IMA sta­tus

Anerkannt CNMNC Newsletter 47, Dez. 2018

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Garnet supergroup

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell param­e­ters a (Å)

17.2072(6)

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.5689(4)

Cell param­e­ters a/b or c/a

0.614

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

2710.072

Kristall struc­ture

Granat-Supergruppe; Struktur bestimmt

X-Ray Pow­der Diffrac­tion

8.57(65), 3.042(58), 2.720(100), 2.483(27), 2.223(28), 1.975(30), 1.687(31), 1.626(32)

XRD chart Nikmelnikovite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Density (g/cm³)

3.084 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Kovdor

Type mate­r­ial

Typmaterial ist hinterlegt in den Sammlungen des Mineralogischen Museums, St. Petersburg State University, Russland, Katalognummer: 1/19691

Preface

Author (Name, Year)

Sergey V. Krivovichev, Victor N. Yakovenchuk, Taras L. Panikorovskii, Eugeny E. Savchenko, Yakov A. Pakhomovsky, Julia A. Mikhailova, Ekaterina A. Selivanova, Galijabanu I. Kadyrova and Gregory Y. Ivanyuk (2019)

References

Krivovichev, S.V., Yakovenchuk, V.N., Panikorovskii, T.L., Savchenko, E.E., Pakhomovsky, Y.A., Mikhailova, J.A., Selivanova, E.A., Kadyrova, G.I. and Ivanyuk, G.Y. (2019) Nikmelnikovite, IMA 2018-043. CNMNC Newsletter No. 47, February 2019, page 201; European Journal of Mineralogy, 31, 199–204.

Krivovichev, S.V., Yakovenchuk, V.N., Panikorovskii, T.L., Savchenko, E.E., Pakhomovsky, Ya.A., Mikhailova, Yu. A., Selivanova, E.A., Kadyrova, G.I. and Ivanyuk, G.Yu.: Nikmelnikovite, Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20: a new mineral from the Kovdor massif (Kola Peninsula, Russia). Doklady Earth Sciences Vol. 488 (2019) S. 1200–1202.

Sergey V. Krivovichev, Taras L Panikorovskii, Victor N. Yakovenchuk, Ekaterina A. Selivanova, Gregory Yu. Ivanyuk: Trigonal variation in the garnet supergroup: the crystal structure of nikmelnikovite, Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20, from Kovdor massif, Kola Peninsula, Russia. Mineralogical Magazine (2021) First View , pp. 1 - 7. DOI: https://doi.org/10.1180/mgm.2021.55

IMA group assignments

 
neue Definition: {X3}[Y2](Z3)φ12
kubisch
 


 
 
 
{Na3}[Al2](Li3)F12
kubisch
Ia3d


 
 
 
{Ca3}[Al2](☐3)(OH)12
kubisch
Ia3d

 
 
Ca3Sb5+2(Fe3+2Fe2+)O12
kubisch
Ia3d

 
 
Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20
trigonal
R3


 
 
 
Ca3Te6+2Zn3O12
kubisch
Ia3d


 
 
 
{Ca3}[Sb5+Sn4+](Al3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Sb5+Sn4+](Fe3+3)O12
kubisch
Ia3d

 
 
 
{Ca3}[U6+0.5Zr1.5](Fe3+3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Sb5+Zr](Fe3+3)O12
kubisch
Ia3d

 
 
YCa2Zr2Al3O12
kubisch
Ia3d

 
 
Ca3Ti3+2Si3O12
kubisch
Ia3d


 
 
 
{Fe2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Ti2](SiAl2)O12
kubisch
Ia3d

 
 
 
{Mg3}[Cr3+2](Si3)O12
kubisch
Ia3d

 
 
 
Mg3(MgSi)(SiO4)3
kubisch
 

 
 
 
{Y2Ca}[Mg2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[TiFe2+](Si3)O12
kubisch
Ia3d

 
 
 
{Mg3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Cr3+2](Si3)O12
kubisch
Ia3d


 
 
 
{Ca3}[Mn3+2](Si2)(☐)O8(OH)4
tetragonal
I41/acd

 
 
 
{Ca3}[Al2](Si2)(☐)O8(OH)4
tetragonal
I41/acd


 
 
 
{Ca3}[Sn4+2](SiAl2)O12
kubisch
Ia3d

 
 
 
{Ca3}[Zr2](SiFe3+2)O12
kubisch
Ia3d

 
 
 
{Ca3}[Zr2](SiAl2)O12
kubisch
Ia3d

 
 
 
{Ca3}[Ti2](SiFe3+2)O12
kubisch
Ia3d

 
 
 
{Ca3}[Sn4+2](SiFe3+2)O12
kubisch
Ia3d


 
 
 
NaCa2Mg2(AsO4)3
kubisch
Ia3d

 
 
 
{Ca2Na}[Mn2+2](As5+3)O12
kubisch
Ia3d

 
 
 
{Ca2Na}[Mn2+2](V5+3)O12
kubisch
Ia3d

 
 
 
{Ca2Na}[Mg2](V5+3)O12
kubisch
Ia3d

 
 
Ca3Fe2[(AlO3(OH)]3
kubisch
Ia3d

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Actuality: 24. Jan 2022 - 10:57:53

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

'Garnet supergroup'

neue Definition: {X3}[Y2](Z3)φ12

kubisch : kubisch-hexakisoktaedrisch

9.AD.25

Katoite

{Ca3}[Al2](☐3)(OH)12

kubisch : m3m : Ia3d

9.AD.25

Majorite

Mg3(MgSi)(SiO4)3

9.AD.25

'Melanite' (Var.v. Andradite)

9.AD.25

Rubinite

Ca3Ti3+2Si3O12

kubisch : m3m : Ia3d

9.AD.25

Wadalite

Ca6Al5Si2O16Cl3

kubisch : 43m : I43d

9.AD.25

Almandine

{Fe2+3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Andradite

{Ca3}[Fe3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Calderite

{Mn2+3}[Fe3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

'Hessonite' (Var.v. Grossular)

Ca3Al2(SiO4)3

9.AD.25

'Hibschite' (Var.v. Grossular)

Ca3Al2(SiO4)3-x(OH)4*x {x<0.2-1.5}

kubisch : m3m : Ia3d

9.AD.25

Kimzeyite

{Ca3}[Zr2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Uvarovite

{Ca3}[Cr3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Goldmanite

{Ca3}[V3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Grossular

{Ca3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Holtstamite

{Ca3}[Al2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

9.AD.25

Hutcheonite

{Ca3}[Ti2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Knorringite

{Mg3}[Cr3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Morimotoite

{Ca3}[TiFe2+](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Schorlomite

{Ca3}[Ti2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Spessartine

{Mn2+3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Momoiite

{Mn2+3}[V3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Kerimasite

{Ca3}[Zr2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Toturite

{Ca3}[Sn4+2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Menzerite-(Y)

{Y2Ca}[Mg2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Elbrusite

{Ca3}[U6+0.5Zr1.5](Fe3+3)O12

kubisch : m3m : Ia3d

9.AD.25

Bitikleite

{Ca3}[Sb5+Sn4+](Al3)O12

kubisch : m3m : Ia3d

9.AD.25

Usturite

{Ca3}[Sb5+Zr](Fe3+3)O12

kubisch : m3m : Ia3d

9.AD.25

Eringaite

{Ca3}[V3+2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Dzhuluite

{Ca3}[Sb5+Sn4+](Fe3+3)O12

kubisch : m3m : Ia3d

9.AD.25

Irinarassite

{Ca3}[Sn4+2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Eltyubyuite

Ca12Fe3+10Si4O32Cl6

kubisch : 43m : I43d

9.AD.25

Adrianite

Ca12(Al4Mg3Si7)O32Cl6

kubisch : 43m : I43d

9.AD.25

Priscillagrewite-(Y)

YCa2Zr2Al3O12

kubisch : m3m : Ia3d

9.AD.25

'Hydroandradite' (Var.v. Andradite)

Ca3Fe3+2(SiO4)3-x(OH)4x

9.AD.25

'Hydrougrandite'

(Ca,Mg,Fe2+)3(Fe3+,Al)2(SiO4)3-x(OH)4x

9.AD.25

Nikmelnikovite

Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20

trigonal : 3 : R3

9.AD.25

Henritermierite

{Ca3}[Mn3+2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

9.AD.25

Other languages

German

Nikmelnikovit

English

Nikmelnikovite

CNMNC (IMA)-Number

IMA 2018-043

CNMNC symbol

Symbol

Nmn

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

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English pages

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