Katophorite Mineral Data (original) (raw)
General Katophorite Information
Chemical Formula:
Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2
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 % 100.09 % = TOTAL OXIDE
Empirical Formula:
Na1.2K0.3Ca1.3Fe2+3.25Mg1.5Ti0.2Mn2+0.2Al0.7Si7.3O22(OH)2
Environment:
Found in basic alkaline igneous rocks and in blueschist facies jadeitites. Forms a series with magnesiokatophorite.
IMA Status:
Valid Species (Pre-IMA) 1894
Locality:
La Tabatiere, PQ, Canada and the Christiania region, Norway. Link to MinDat.org Location Data.
Name Origin:
Named from the Greek for "carrying down", in allusion to its volcanic origin.
Name Pronunciation:
Katophorite + Pronunciation 
Synonym:
Aluminokatophorite
Catophorite
ICSD 64886
PDF 85-1481
Katophorite Image
Images:
 |
Katophorite Yoshimuraite Comments: Dark green katophorite associated with yoshimuraite. Inset fragment shows the transparency of the katophorite. Location: Toguchi mine, Shidara, Kitashidara-Gun, Aichi, Japan.Scale: See Image. © Rruff Database |
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Katophorite Crystallography
Axial Ratios:
a:b:c =0.5555:1:0.293
Cell Dimensions:
a = 10.019, b = 18.036, c = 5.286, Z = 2; beta = 104.98° V = 922.73 Den(Calc)= 3.38
Crystal System:
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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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
Cleavage:
{110} Perfect, {010} Parting
Color:
Black, Dark greenish black, Bluish black, Reddish yellow, Bluish green.
Density:
3.2 - 3.5, Average = 3.35
Diaphaneity:
Transparent to Translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Epitaxial - Crystallographic alignment with a precursor mineral
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Optical Properties of Katophorite
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
Ncalc = 1.66 - 1.73
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
Electron Density:
Bulk Density (Electron Density)=3.29 gm/cc
note: Specific Gravity of Katophorite =3.35 gm/cc.
Fermion Index:
Fermion Index = 0.01
Boson Index = 0.99
Photoelectric:
PEKatophorite = 8.02 barns/electron
U=PEKatophorite x relectron= 26.42 barns/cc.
Radioactivity:
GRapi = 17.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Katophorite per GRapi unit = 5.65 (%)
Estimated Radioactivity from Katophorite 
- barely detectable
Katophorite Classification
Dana Class:
66.01.03b.12 (66)Inosilicate Double-Width Unbranched Chains, W=2
(66.01)with P=2 amphibole configuration
(66.01.03b)Group 3, the sodic-calcic amphiboles
66.01.03b.01 Winchite [](CaNa)Mg4(Al,Fe3)Si8O22(OH)2 C 2/m 2/m
66.01.03b.01a Parvowinchite Na(NaMn)(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
66.01.03b.02 Ferrowinchite [](CaNa)Fe4(Al,Fe)Si8O22(OH)2 C 2/m 2/m
66.01.03b.03 Ferriwinchite ([],Na)(Na,Ca)2(Mg,Fe)4Fe[Si8O22](OH)2 C 2/m 2/m
66.01.03b.04 Ferroferriwinchite* CaNa(Fe,Mg)4Fe[Si8O22](OH)2 C 2/m 2/m
66.01.03b.05 Barroisite [](CaNa)Mg3AlFeSi7AlO22(OH)2 C 2/m 2/m
66.01.03b.05a Aluminobarroisite! []CaNaMg3Al2(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03b.06 Ferrobarroisite [](CaNa)Fe3AlFeSi7AlO22(OH)2 C 2/m 2/m
66.01.03b.06a Aluminoferrobarroisite! []CaNa(Fe2)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03b.07 Ferribarroisite CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
66.01.03b.08 Ferroferribarroisite* CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
66.01.03b.08a Ferri-ferrobarroisite! []CaNa(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03b.09 Richterite Na(CaNa)(Mg,Fe)5[Si8O22](OH)2 C 2/m 2/m
66.01.03b.09a Fluororichterite! Na(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
66.01.03b.09b Potassic-fluororichterite! (K,Na)(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
66.01.03b.09c Potassicrichterite! (K,Na)(CaNa)2Mg5[Si8O22](OH,F)2 C 2/m 2/m
66.01.03b.10 Ferrorichterite Na(CaNa)Fe5[Si8O22](OH)2 C 2/m 2/m
66.01.03b.11 Magnesiokatophorite Na(CaNa)Mg4AlSi7AlO22(OH)2 C 2/m 2/m
66.01.03b.12 Katophorite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
66.01.03b.13 Magnesioferrikatophorite Na2Ca(Mg,Fe)4FeSi7AlO22(OH)2 C 2/m 2/m
66.01.03b.14 Ferrikatophorite Na2Ca(Fe,Mg)4Fe(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03b.15 Magnesiotaramite Na(CaNa)Mg3ALFe[Si6Al2O22](OH)2 C 2/m 2/m
66.01.03b.15a Aluminotaramite! Na(CaNa)(Fe3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
66.01.03b.15b Alumino-magnesiotaramite! Na(CaNa)(Mg3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
66.01.03b.15c Fluoro-alumino-magnesiotaramite! Na(CaNa)(Mg3Al2)(Si6Al2)O22F2 C 2/m 2/m
66.01.03b.16 Taramite Na(CaNa)Fe3AlFe[Si6Al2O22](OH)2 C 2/m 2/m
66.01.03b.17 Ferri-magnesiotaramite! NaCaNaMg3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
66.01.03b.18 Ferritaramite Na(CaNa)(Fe,Mg)3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
66.01.03b.19 Fluoropargasite! NaCa2(Mg3FeAl)5(Si6Al2O22)F2 C 2/m 2/m
66.01.03b.20 Parvo-mangano-edenite! Na(CaMn)2Mg5(Si7Al)O22(OH)2 C 2/m 2/m
66.01.03b.21 Parvo-manganotremolite! [](CaMn)2Mg5(Si7Al)O22(OH)2 C 2/m 2/m
Strunz Class:
09.DE.20 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.20 Winchite [](CaNa)Mg4(Al,Fe3)Si8O22(OH)2 C 2/m 2/m
09.DE.20 Aluminobarroisite! []CaNaMg3Al2(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.20 Ferriwinchite ([],Na)(Na,Ca)2(Mg,Fe)4Fe[Si8O22](OH)2 C 2/m 2/m
09.DE.20 Ferroferriwinchite* CaNa(Fe,Mg)4Fe[Si8O22](OH)2 C 2/m 2/m
09.DE.20 Aluminoferrobarroisite! []CaNa(Fe2)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.20 Ferri-ferrobarroisite! []CaNa(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.20 Ferribarroisite CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
09.DE.20 Barroisite [](CaNa)Mg3AlFeSi7AlO22(OH)2 C 2/m 2/m
09.DE.20 Fluororichterite! Na(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
09.DE.20 Ferrobarroisite [](CaNa)Fe3AlFeSi7AlO22(OH)2 C 2/m 2/m
09.DE.20 Magnesiotaramite Na(CaNa)Mg3ALFe[Si6Al2O22](OH)2 C 2/m 2/m
09.DE.20 Ferrikatophorite Na2Ca(Fe,Mg)4Fe(Si7Al)O22(OH)2 C 2/m 2/m
09.DE.20 Ferrorichterite Na(CaNa)Fe5[Si8O22](OH)2 C 2/m 2/m
09.DE.20 Ferrowinchite [](CaNa)Fe4(Al,Fe)Si8O22(OH)2 C 2/m 2/m
09.DE.20 Ferroferribarroisite* CaNa(Fe,Mg)3Fe2[AlSi7O22](OH)2 C 2/m 2/m
09.DE.20 Ferritaramite Na(CaNa)(Fe,Mg)3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
09.DE.20 Ferri-magnesiotaramite! NaCaNaMg3Fe2[Si6Al2O22](OH)2 C 2/m 2/m
09.DE.20 Magnesioferrikatophorite Na2Ca(Mg,Fe)4FeSi7AlO22(OH)2 C 2/m 2/m
09.DE.20 Katophorite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
09.DE.20 Parvowinchite Na(NaMn)(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
09.DE.20 Potassic-fluororichterite! (K,Na)(CaNa)Mg5[Si8O22]F2 C 2/m 2/m
09.DE.20 Richterite Na(CaNa)(Mg,Fe)5[Si8O22](OH)2 C 2/m 2/m
09.DE.20 Taramite Na(CaNa)Fe3AlFe[Si6Al2O22](OH)2 C 2/m 2/m
09.DE.20 Magnesiokatophorite Na(CaNa)Mg4AlSi7AlO22(OH)2 C 2/m 2/m
09.DE.20 Potassicrichterite! (K,Na)(CaNa)2Mg5[Si8O22](OH,F)2 C 2/m 2/m
09.DE.20 Fluoro-alumino-magnesiotaramite! Na(CaNa)(Mg3Al2)(Si6Al2)O22F2 C 2/m 2/m
09.DE.20 Aluminotaramite! Na(CaNa)(Fe3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
09.DE.20 Alumino-magnesiotaramite! Na(CaNa)(Mg3Al2)(Si6Al2)O22(OH)2 C 2/m 2/m
Other Katophorite Information
References:
NAME( Dana8) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Dana8)
See Also:
Links to other databases for Katophorite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Katophorite Specimen Label here :
Katophorite
Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2
Dana No: 66.01.03b.12 Strunz No: 09.DE.20
Locality:
Notes: