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Fedorite

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Evgraf Stepanovich Fedorov
Formula:
(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O
Colour:
White, colorless, bright red, raspberry red
Lustre:
Sub-Vitreous, Pearly
Specific Gravity:
2.43 - 2.58
Crystal System:
Triclinic
Member of:
Name:
Named in 1968 by A. A. Kukharenko, M. P. Orlova, and A. G. Bulakh in honor of mathematician, crystallographer, and mineralogist Evgraf Stepanovich Fedorov [December 22, 1853 Orenberg, Russia - May 21, 1919 St. Petersburg, Russia]. Fedorov was very interested in group theory and proved important concepts involved in polytypism and wallpaper theory later used in solving crystal structures.
Isostructural with:
A white micaceous mineral.

Structurally related to Reyerite Group.


Hide all sections | Show all sections

Classification of FedoriteHide

Approved
9.EE.80

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
73.1.3.1

73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
1 : Condensed Tetrahedral Sheets with double layers
16.10.12

16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis

Physical Properties of FedoriteHide

Sub-Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
White, colorless, bright red, raspberry red
Streak:
White
Tenacity:
Flexible
Cleavage:
Perfect
{001}
Fracture:
Micaceous
Density:
2.43 - 2.58 g/cm3 (Measured)    2.43 g/cm3 (Calculated)

Optical Data of FedoriteHide

Type:
Biaxial (-)
RI values:
nα = 1.522 nβ = 1.530 nγ = 1.531
2V:
Measured: 32° , Calculated: 38°
Birefringence:
0.009
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v distinct
Optical Extinction:
X = c, Y = b, Z = a

Chemical Properties of FedoriteHide

Formula:
(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O
IMA Formula:
(K,Na)2.5(Ca,Na)7Si16O38(OH,F)2 · 3.5H2O

Crystallography of FedoriteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 9.676 Å, b = 16.706 Å, c = 13.233 Å
α = 93.35°, β = 114.96°, γ = 90.03°
Ratio:
a:b:c = 0.579 : 1 : 0.792
Unit Cell V:
1,935.23 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Platy micaceous aggregates

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.7 (80)
7.9 (20b)
6.0 (80)
4.67 (30b)
4.38 (10)
4.21 (70)
4.00 (60)
3.85 (20)
3.78 (10)
3.65 (10)
3.56 (20)
3.35 (40b)
3.24 (10)
3.13 (80b)
3.04 (40)
2.97 (90)
2.03 (100b)
2.80 (40)
2.74 (20)
2.67 (30)
2.60 (60b)
2.42 (40)
2.36 (30)
2.32 (10)
2.26 (50)
2.09 (30b)
2.02 (10)
1.981 (50)
1.956 (10)
1.915 (30)
1.873 (10)
1.826 (90b)
1.800 (20)
1.745 (40)
1.722 (10)
1.698 (20)
1.674 (10)
1.657 (30)
1.642 (10)
1.615 (30)
1.596 (20)
1.580 (30)
1.542 (40)
1.485 (60)
1.469 (10)
1.443 (40)
1.373 (20)
1.338 (50b)
1.322 (20)
1.300 (30)
1.286 (10)
1.275 (10)
1.259 (30)
1.204 (10)
1.186 (30)
1.173 (20)
1.148 (60)
1.137 (10)
1.129 (30)
Comments:
ICDD 19-466 and ICDD 19-466a

Type Occurrence of FedoriteHide

Other Language Names for FedoriteHide

German:Fedorit
Spanish:Fedorita

Relationship of Fedorite to other SpeciesHide

Member of:
Other Members of this group:
Martinite(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2OTric. 1 : P1
Structurally related to group(s):

Common AssociatesHide

Associated Minerals Based on Photo Data:
Charoite14 photos of Fedorite associated with Charoite on mindat.org.
Aegirine7 photos of Fedorite associated with Aegirine on mindat.org.
Tinaksite7 photos of Fedorite associated with Tinaksite on mindat.org.
Agrellite4 photos of Fedorite associated with Agrellite on mindat.org.
Pectolite3 photos of Fedorite associated with Pectolite on mindat.org.
Digenite2 photos of Fedorite associated with Digenite on mindat.org.
Microcline2 photos of Fedorite associated with Microcline on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EE.05BementiteMn7Si6O15(OH)8Mon.
9.EE.10BrokenhilliteMn8Si6O15(OH)10Hex. 6mm : P63mc
9.EE.10Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
9.EE.10FriedeliteMn2+8Si6O15(OH,Cl)10Mon. 2/m : B2/m
9.EE.10Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig.
9.EE.10Mcgillite(Mn,Fe)8Si6O15(OH)8Cl2Mon. 2/m : B2/m
9.EE.15Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
9.EE.15SchalleriteMn2+16As3Si12O36(OH)17Trig. 3m : P3m1
9.EE.20Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2OMon. 2/m : B2/m
9.EE.20TuperssuatsiaiteNa2Fe3Si8O20(OH)2 · 4H2OMon. 2/m : B2/m
9.EE.20YofortieriteMn5Si8O20(OH)2 · 8-9H2OMon. 2/m : B2/m
9.EE.20WindhoekiteCa2Fe3+2.67[Si8O20](OH)4 · 10H2O Mon. 2/m : B2/m
9.EE.25Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2OOrth.
9.EE.25LoughliniteNa2Mg3Si6O16 · 8H2OOrth.
9.EE.25SepioliteMg4(Si6O15)(OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.EE.25Kalifersite(K,Na)5Fe3+7Si20O50(OH)6 · 12H2OTric.
9.EE.30GyroliteNaCa16Si23AlO60(OH)8 · 14H2OTric.
9.EE.30OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
9.EE.30TungusiteCa4Fe2Si6O15(OH)6
9.EE.35Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
9.EE.35Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
9.EE.40NatrosiliteNa2Si2O5Mon.
9.EE.45MakatiteNa2Si4O8(OH)2 · 4H2OMon. 2/m : P21/b
9.EE.50VarennesiteNa8Mn2Si10O25(OH,Cl)2 · 12H2OOrth.
9.EE.55RaiteNa4Mn2+3Ti0.25Si8O20(OH)2 · 10H2OOrth. 2 2 2 : C2 2 2
9.EE.60IntersiliteNa6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2OMon.
9.EE.65Shafranovskite(Na,K)6(Mn,Fe)3Si9O24 · 6H2OTrig.
9.EE.65ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig.
9.EE.70ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
9.EE.75Minehillite(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16Hex.
9.EE.80Martinite(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2OTric. 1 : P1
9.EE.85Lalondeite(Na,Ca)6(Ca,Na)3Si16O38(F,OH)2·3H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.10.1Bytownite(Ca,Na)[Al(Al,Si)Si2O8]Tric.
16.10.2LisetiteCaNa2Al4Si4O16Orth.
16.10.4Thomsonite-CaNaCa2[Al5Si5O20] · 6H2OOrth. mmm (2/m 2/m 2/m)
16.10.5Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2OOrth.
16.10.6MesoliteNa2Ca2Si9Al6O30 · 8H2OOrth. mm2 : Fdd2
16.10.7Faujasite
16.10.8Garronite-CaNa2Ca5Al12Si20O64 · 27H2OTet. 4 2m : I4m2
16.10.9BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma
16.10.10Herschelite(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig.
16.10.11Phillipsite
16.10.13WillhendersoniteKCa[Al3Si3O12] · 5H2OTric.
16.10.14Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
16.10.15Mordenite(Na2,Ca,K2)Al2Si10O24 · 7H2OOrth.
16.10.16Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
16.10.17Lévyne
16.10.18Clinoptilolite
16.10.19Heulandite
16.10.20GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth.
16.10.21Stilbite
16.10.22DachiarditeMon.
16.10.23OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
16.10.24PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex.
16.10.25Erionite
16.10.26Paulingite
16.10.27Sodium Dachiardite(Na2,Ca,K2)4-5Al8Si40O96 · 26H2O
16.10.28Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2OHex.
16.10.29RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet.

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.

References for FedoriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
A. A. Kukharenko, M. P. Orlova, and A. G. Bulakh (1965) The Caledonian Ultrabasic Alkalic Rocks and Carbonates of the Kola Peninsula and Northern Karelia, Izd. Nedra, p. 479-481 (in Russian).
American Mineralogist: 52: 561-2.
Soviet Physics – Crystallography: 28: 95-96.
Sokolova, G. V., Kashaev, A. A., Drits, V. A., and Ilyukhin, V. V. (1983) The Crystal Structure of Fedorite, Kristallografiya (Soviet Physics - Crystallography), v. 28, p. 170-172 (in Russian).
Soviet Physics – Crystallography: 33: 763-765.
Canadian Mineralogist: 39: 769-777.

Internet Links for FedoriteHide

Localities for FedoriteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Niederzissen
        • Brenk
Blass, G., Graf, H.W., Kolitsch,U., Sebold, D., Neue Funde aus der Vulkaneifel, Mineralien-Welt 3/2004
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]
Konev, A.A., Vorob'yev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Rus.)
            • Sirenevyi Kamen' Deposit
Konev, A.A., Vorob'yev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Rus.)
Pavel M. Kartashov data
  • Northern Region
    • Murmanskaya Oblast'
      • Turii Cape
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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