Kuzmenkoite-Mn Mineral Data

Kuzmenkoite-Mn Mineral Data
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General Kuzmenkoite-Mn Information

Help on Chemical Formula: Chemical Formula: (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O)
Help on Composition: Composition: Molecular Weight = 1,095.05 gm
   Potassium   6.07 %  K     7.31 % K2O
   Sodium      0.63 %  Na    0.85 % Na2O
   Titanium   15.74 %  Ti   26.26 % TiO2
   Manganese   3.51 %  Mn    4.53 % MnO
   Niobium     3.39 %  Nb    4.85 % Nb2O5
   Iron        1.02 %  Fe    1.31 % FeO
   Silicon    20.52 %  Si   43.90 % SiO2
   Hydrogen    1.24 %  H    11.06 % H2O
   Oxygen     47.88 %  O
             ______        ______ 
             100.00 %      100.07 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.7Na0.3Mn2+0.7Fe2+0.2Ti3.6Nb0.4Si8O24(OH)4.1·4.67(H2O)
Help on Environment: Environment: Late hydrothermal phase in minute cavities in albitized murmanite-bearing lujavrites. Also pseudomorphous after murmanite. Structurally related to labuntsovite.
Help on IMA Status: IMA Status: Approved IMA 2000 (Dana # Added)
Help on Locality: Locality: Mt. Flora (north ridge of Mt. Selsurt) in the northern part of the Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Russian geochemist and mineralogist Maria V. Kuz'menko (1918-1995).
Help on Synonym: Synonym: IMA1998-058
  IMA2000-A
  Kuzmenkoite
 

Kuzmenkoite-Mn Image

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Kuzmenkoite-Mn

Comments: Yellowish brown kuzmenkoite-Mn crystals on matrix, with smaller, more brown colored labuntsovite-Mn.
Location: Mnt Flora, Lovozero, Kola, Russia. Scale: Sample Size 2x3 cm.
© Diederik Visser
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Kuzmenkoite-Mn   Calciohilairite

Comments: White rhombododecahedral crystals of calciohilairite associated with orange=brown stout prismatic kuzmenkoite-Mn on matrix.
Location: Flora Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV ~1x1 cm.
© Pavel M. Kartashov

Kuzmenkoite-Mn Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0332:1:1.0139
Help on Cell Dimensions: Cell Dimensions: a = 14.369, b = 13.906, c = 14.1, Z = 4; beta = 117.09° V = 2,508.31 Den(Calc)= 2.90
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.17(1)(421,402), 7(0.9)(001,020), 6.33(0.8)(201), 4.86(0.7)(021,111), 3.08(0.5)(022,041), 1.551(0.4)(843,173,82
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Forms: ( 3 0 1) ( 0 1 0) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Rastsvetaeva R K , Chukanov N V , Pekov I V , Crystallography Reports , 45 (2000) p.759-761, Refined crystal structure of kuzmenkoite, Locality: Lovozero massif, Kola Peninsula, Russia

 

Physical Properties of Kuzmenkoite-Mn

Help on Cleavage: Cleavage: {???} Imperfect
Help on Color: Color: Yellow, Dark orange, Colorless.
Help on Density: Density: 2.67 - 2.97, Average = 2.82
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kuzmenkoite-Mn

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.095 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2466,KPDmeas= 0.2535,KC= 0.2724
Ncalc = 1.73 - 1.81
Help on Optical Data: Optical Data: Biaxial (+), a=1.683, b=1.687, g=1.775, bire=0.0920
 

Calculated Properties of Kuzmenkoite-Mn

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.79 gm/cc
note: Specific Gravity of Kuzmenkoite-Mn =2.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEKuzmenkoite-Mn = 10.01 barns/electron
U=PEKuzmenkoite-Mn x relectron= 27.93 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 86.61 (Gamma Ray American Petroleum Institute Units)
Concentration of Kuzmenkoite-Mn per GRapi unit = 1.15 (%)

Estimated Radioactivity from Kuzmenkoite-Mn - barely detectable

 

Kuzmenkoite-Mn Classification
Help on Dana Class: Dana Class: 60.01.03c.01 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03c)Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m])
 
60.01.03c.01 Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O) C 2/m 2/m
 
60.01.03c.02 Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O) Cm m
 
60.01.03c.03 Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
60.01.03c.04 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
Help on Strunz Class: Strunz Class: 09.CE.30c 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.30c Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
 
09.CE.30c Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
09.CE.30c Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4•6-8(H2O) Cm m
 
09.CE.30c Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O) C 2/m 2/m
 
09.CE.30c Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]•4(H2O) C 2/m 2/m
 
09.CE.30c Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) Cm m
 
09.CE.30c Gjerdingenite-Ca! K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•6H2O C 2/m 2/m
 
09.CE.30c Gjerdingenite-Na! (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O C 2/m 2/m
 
09.CE.30c Burovaite-Ca! (K,Na)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8•12H2O C 2/m 2/m
 

Other Kuzmenkoite-Mn Information
Help on References: References: NAME( AmMin, vol 85, p 1562) PHYS. PROP.(AmMin, vol 85, p 1562) OPTIC PROP.(AmMin, vol 85, p 1562)
Help on See Also: See Also: Links to other databases for Kuzmenkoite-Mn :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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Kuzmenkoite-Mn

(K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4•5(H2O)
Dana No: 60.01.03c.01 Strunz No: 09.CE.30c
Locality:

 

Notes: