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Potassicleakeite Mineral Data

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General Potassicleakeite Information

Help on Chemical  Formula: Chemical Formula: KNa2Mg2Fe+++2LiSi8O22(OH)2
Help on Composition: Composition: Molecular Weight = 876.72 gm
   Potassium   2.68 %  K     3.22 % K2O
   Sodium      6.56 %  Na    8.84 % Na2O
   Lithium     0.55 %  Li    1.19 % Li2O
   Magnesium   4.44 %  Mg    7.36 % MgO
   Manganese   6.27 %  Mn    8.09 % MnO
   Vanadium    3.49 %  V     5.13 % V2O3
   Iron        6.37 %  Fe    9.11 % Fe2O3
   Silicon    25.63 %  Si   54.83 % SiO2
   Hydrogen    0.23 %  H     2.05 % H2O
   Oxygen     43.80 %  O
             ______        ______ 
             100.00 %       99.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.6Na2.5Mg1.6Fe3+Mn2+Li0.7V3+0.6Si8O22(OH)2
Help on Environment: Environment: Pegmatite-like veinlets that cut a Mn ore body. (amphibole group; structure)
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Tanohata mine, Iwaite Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the K-dominant analog of leakeite.
Help on Synonym: Synonym: IMA2001-049

Potassicleakeite Image

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  Watatsumiite   Potassicleakeite

Comments: Yellow green prismatic crystal of watatsumiite terminated by pyramidal faces associated with reddish brown potassicleakeite and clear quartz (JMPS, v 98, p 149).
Location: Tanohata mine, Iwate Prefecture, Japan. Scale: See Image.

Potassicleakeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5516:1:0.2938
Help on Cell Dimensions: Cell Dimensions: a = 9.932, b = 18.003, c = 5.2893, Z = 2; beta = 104.04° V = 917.50 Den(Calc)= 3.17
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.53(1)(202), 4.5(0.89)(040), 3.16(0.72)(310,201),8.48(0.67)(110), 2.83(0.49)(330), 3.4(0.46)(131), 3.28(0.45)(240), 2.74(0.44)(331), 2.71(0.41)(151),

Physical Properties of Potassicleakeite

Help on Cleavage: Cleavage: {110} Perfect, {110} Perfect
Help on Color: Color: Reddish brown.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
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: pale brownish yellow

Optical Properties of Potassicleakeite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2149,KC= 0.2214
Ncalc = 1.7
Help on Optical Data: Optical Data: Biaxial (+), a=1.672, b=1.68, g=1.692, bire=0.0200

Calculated Properties of Potassicleakeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Potassicleakeite =3.17 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPotassicleakeite = 5.58 barns/electron
U=PEPotassicleakeite x relectron= 17.40 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 37.97 (Gamma Ray American Petroleum Institute Units)
Concentration of Potassicleakeite per GRapi unit = 2.63 (%)

Estimated Radioactivity from Potassicleakeite - barely detectable


Potassicleakeite Classification

Help on  Dana Class: Dana Class: 66.01.03c.12b (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.03c)Group 4, the sodic amphiboles
66.01.03c.01 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
66.01.03c.02 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
66.01.03c.03 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
66.01.03c.04 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
66.01.03c.05 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
66.01.03c.06 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
66.01.03c.07 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
66.01.03c.08 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
66.01.03c.09 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
66.01.03c.09a Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
66.01.03c.09b Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
66.01.03c.10 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
66.01.03c.11 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
66.01.03c.11a Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03c.11b Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03c.11c Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
66.01.03c.12 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
66.01.03c.12a Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
66.01.03c.12b Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
66.01.03c.13 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
66.01.03c.14 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
66.01.03c.15 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
66.01.03c.16 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
66.01.03c.17 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family
09.DE.25 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
09.DE.25 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
09.DE.25 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
09.DE.25 Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.25 Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.25 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
09.DE.25 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
09.DE.25 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
09.DE.25 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
09.DE.25 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
09.DE.25 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
09.DE.25 Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
09.DE.25 Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
09.DE.25 Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
09.DE.25 Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
09.DE.25 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m

Other Potassicleakeite Information

Help on References: References: NAME( AmMin, v 88, p 1177) PHYS. PROP.(AmMin, v 88, p 1177) OPTIC PROP.(AmMin, v 88, p 1177)
Help on See Also: See Also: Links to other databases for Potassicleakeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: 66.01.03c.12b Strunz No: 09.DE.25





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