Katophorite Mineral Data + Say KATOPHORITE

General Katophorite Information
Help on Chemical Formula: Chemical Formula: Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2
Help on Composition: Composition: Molecular Weight = 939.86 gm
   Potassium   1.25 %  K     1.50 % K2O
   Sodium      2.94 %  Na    3.96 % Na2O
   Calcium     5.54 %  Ca    7.76 % CaO
   Magnesium   3.88 %  Mg    6.43 % MgO
   Titanium    1.02 %  Ti    1.70 % TiO2
   Manganese   1.17 %  Mn    1.51 % MnO
   Aluminum    2.01 %  Al    3.80 % Al2O3
   Iron       19.31 %  Fe   24.84 % FeO
   Silicon    21.81 %  Si   46.67 % SiO2
   Hydrogen    0.21 %  H     1.92 % H2O
   Oxygen     40.86 %  O
             ______        ______ 
             100.00 %      100.08 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.2K0.3Ca1.3Fe2+3.25Mg1.5Ti0.2Mn2+0.2Al0.7Si7.3O22(OH)2
Help on Environment: Environment: Found in basic alkaline igneous rocks and in blueschist facies jadeitites. Forms a series with magnesiokatophorite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1894
Help on Locality: Locality: La Tabatiere, PQ, Canada and the Christiania region, Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "carrying down", in allusion to its volcanic origin.
Help on Synonym: Synonym: Aluminokatophorite
  Catophorite
  ICSD 64886
  PDF 85-1481
 

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Katophorite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5555:1:0.293
Help on Cell Dimensions: Cell Dimensions: a = 10.019, b = 18.036, c = 5.286, Z = 2; beta = 104.98° V = 922.73 Den(Calc)= 3.38
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Click Here for Large Katophorite Structure Window Crystal Structure:

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Hawthorne F C , Oberti R , Sardone N , The Canadian Mineralogist , 34 (1996) p.577-593, Sodium at the A site in clinoamphiboles: the effects of composition, on patterns of order, Sample: A7 - D163 N.2

View Additional jPOWD Structure files for Katophorite
[1]
 

Physical Properties of Katophorite

Help on Cleavage: Cleavage: [110] Perfect, [010] Parting
Help on Color: Color: Black, Dark greenish black, Bluish black, Reddish yellow, Bluish green.
Help on Density: Density: 3.2 - 3.5, Average = 3.35
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Epitaxial - Crystallographic alignment with a precursor mineral
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
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)
 

Optical Properties of Katophorite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1982,KPDmeas= 0.2,KC= 0.2074
Help on Optical Data: Optical Data: Biaxial (-), a=1.64-1.681, b=1.658-1.688, g=1.66-1.692, bire=0.0110-0.0200, 2V(Calc)=36-72, 2V(Meas)=0-50. Dispersion r > v.
 

Calculated Properties of Katophorite

Help on Electron Density: Electron Density:

relectron=3.29 gm/cc
note: rKatophorite =3.35 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01975
Boson Index = 0.98025
Help on Photoelectric: Photoelectric:

PEKatophorite = 8.02 barns/electron
U=PEKatophorite x relectron= 26.42 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 17.70 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Katophorite - barely detectable

 

Katophorite Classification
Help on Dana Class: Dana Class: 66.1.3b.12 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.1)Dana Type
  (66.1.3b)Group 3, the sodic-calcic amphiboles
 
66.1.3b.1 Winchite [](CaNa)Mg4(Al,Fe3)Si8O22(OH)2 C 2/m 2/m
 
66.1.3b.1a Parvowinchite Na(NaMn)(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
66.1.3b.2 Ferrowinchite [](CaNa)Fe4(Al,Fe)Si8O22(OH)2 C 2/m 2/m
 
66.1.3b.3 Ferriwinchite NaCaMg4FeSi8O22(OH)2 C 2/m 2/m
 
66.1.3b.4 Ferroferriwinchite* CaNa(Fe,Mg)4Fe[Si8O22](OH)2 C 2/m 2/m
 
66.1.3b.5 Barroisite [](CaNa)Mg3AlFeSi7AlO22(OH)2 C 2/m 2/m
 
66.1.3b.5a Aluminobarroisite! []CaNaMg3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3b.6 Ferrobarroisite [](CaNa)Fe3AlFeSi7AlO22(OH)2 C 2/m 2/m
 
66.1.3b.6a Aluminoferrobarroisite! []CaNa(Fe2)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3b.7 Ferribarroisite CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
 
66.1.3b.8 Ferroferribarroisite* CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
 
66.1.3b.8a Ferri-ferrobarroisite! []CaNa(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3b.9 Richterite Na(CaNa)(Mg,Fe)5[Si8O22](OH)2 C 2/m 2/m
 
66.1.3b.9a Fluororichterite! Na(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
 
66.1.3b.9b Potassic-fluororichterite! (K,Na)(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
 
66.1.3b.9c Potassicrichterite! (K,Na)(CaNa)2Mg5[Si8O22](OH,F)2 C 2/m 2/m
 
66.1.3b.10 Ferrorichterite Na(CaNa)Fe5[Si8O22](OH)2 C 2/m 2/m
 
66.1.3b.11 Magnesiokatophorite Na(CaNa)Mg4AlSi7AlO22(OH)2 C 2/m 2/m
 
66.1.3b.12 Katophorite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
66.1.3b.13 Magnesioferrikatophorite Na2Ca(Mg,Fe)4FeSi7AlO22(OH)2 C 2/m 2/m
 
66.1.3b.14 Ferrikatophorite Na2Ca(Fe,Mg)4Fe(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3b.15 Magnesiotaramite Na(CaNa)Mg3ALFe[Si6Al2O22](OH)2 C 2/m 2/m
 
66.1.3b.15a Aluminomagnesiotaramite! NaCaNaMg3Al2[Si6Al2O22](OH)2 C 2/m 2/m
 
66.1.3b.16 Taramite Na(CaNa)Fe3AlFe[Si6Al2O22](OH)2 C 2/m 2/m
 
66.1.3b.17 Ferri-magnesiotaramite! NaCaNaMg3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
 
66.1.3b.18 Ferritaramite Na(CaNa)(Fe,Mg)3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
 
66.1.3b.19 IMA2003-050! NaCa2(Mg3FeAl)5(Si6Al2O22)F2 C 2/m 2/m
 
66.1.3b.20 IMA2003-062! Na(CaMn)2Mg5(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3b.21 IMA2004-045! [](CaMn)S2Mg5Si8O22(OH)2 C 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/F.09-50 VIII - Silicates
  VIII/F - Inosilicates (chain and band) double chains [Si4O11]6-, Na-Ca-Amphiboles
  VIII/F.09 - Amphibole group, Richterite - Ferrobarroisite series
 
VIII/F.09-10 Richterite Na(CaNa)(Mg,Fe)5[Si8O22](OH)2 C 2/m 2/m
 
VIII/F.09-12 Fluororichterite! Na(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
 
VIII/F.09-14 Potassicrichterite! (K,Na)(CaNa)2Mg5[Si8O22](OH,F)2 C 2/m 2/m
 
VIII/F.09-16 Potassic-fluororichterite! (K,Na)(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
 
VIII/F.09-20 Ferrorichterite Na(CaNa)Fe5[Si8O22](OH)2 C 2/m 2/m
 
VIII/F.09-30 Magnesiokatophorite Na(CaNa)Mg4AlSi7AlO22(OH)2 C 2/m 2/m
 
VIII/F.09-40 Magnesioferrikatophorite Na2Ca(Mg,Fe)4FeSi7AlO22(OH)2 C 2/m 2/m
 
VIII/F.09-50 Katophorite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
VIII/F.09-60 Ferrikatophorite Na2Ca(Fe,Mg)4Fe(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.09-65 Aluminomagnesiotaramite! NaCaNaMg3Al2[Si6Al2O22](OH)2 C 2/m 2/m
 
VIII/F.09-70 Magnesiotaramite Na(CaNa)Mg3ALFe[Si6Al2O22](OH)2 C 2/m 2/m
 
VIII/F.09-75 Ferri-magnesiotaramite! NaCaNaMg3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
 
VIII/F.09-80 Taramite Na(CaNa)Fe3AlFe[Si6Al2O22](OH)2 C 2/m 2/m
 
VIII/F.09-81 Ferritaramite Na(CaNa)(Fe,Mg)3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
 
VIII/F.09-85 Parvowinchite Na(NaMn)(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
VIII/F.09-90 Winchite [](CaNa)Mg4(Al,Fe3)Si8O22(OH)2 C 2/m 2/m
 
VIII/F.09-100 Ferrowinchite [](CaNa)Fe4(Al,Fe)Si8O22(OH)2 C 2/m 2/m
 
VIII/F.09-105 Ferriwinchite NaCaMg4FeSi8O22(OH)2 C 2/m 2/m
 
VIII/F.09-107 Aluminobarroisite! []CaNaMg3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.09-108 Aluminoferrobarroisite! []CaNa(Fe2)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.09-110 Barroisite [](CaNa)Mg3AlFeSi7AlO22(OH)2 C 2/m 2/m
 
VIII/F.09-120 Ferrobarroisite [](CaNa)Fe3AlFeSi7AlO22(OH)2 C 2/m 2/m
 
VIII/F.09-125 Ferribarroisite CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
 
VIII/F.09-126 Ferri-ferrobarroisite! []CaNa(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 

Other Katophorite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Katophorite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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Katophorite

Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2
Dana No: 66.1.3b.12 Strunz No: VIII/F.09-50
Locality:

 

Notes:

 
 
   
 
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