Richterite Mineral Data + Say RICHTERITE


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General Richterite Information
Help on Chemical Formula: Chemical Formula: Na(CaNa)(Mg,Fe++)5[Si8O22](OH)2
Help on Composition: Composition: Molecular Weight = 881.35 gm
   Sodium      5.22 %  Na    7.03 % Na2O
   Calcium     4.55 %  Ca    6.36 % CaO
   Magnesium   8.27 %  Mg   13.72 % MgO
   Iron       12.67 %  Fe   16.30 % FeO
   Silicon    25.49 %  Si   54.54 % SiO2
   Hydrogen    0.23 %  H     2.04 % H2O
   Oxygen     43.57 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2CaMg3Fe2+2(Si8O22)(OH)2
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1865
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 72080
  PDF 25-808
 

Richterite Image

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Richterite   Calzirtite   Augite

Comments: Gray irregular grain of calzirtite (see arrow) in fibrous augite with dark red richterite.
Location: Jacupiranga Mine, Cajati, Sao Paulo, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Richterite

Comments: Richterite crystal in tan calcite.
Location: Bancroft, Ontario, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Richterite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5446:1:0.2842
Help on Cell Dimensions: Cell Dimensions: a = 10.03, b = 18.415, c = 5.234, Z = 2; beta = 104.97° V = 933.92 Den(Calc)= 3.13
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): 3.186(1), 3.301(0.75), 8.56(0.75),
Click Here for Large Richterite Structure Window Crystal Structure:

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Della Ventura G , Robert J-L , Raudsepp M , Hawthorne F C , American Mineralogist , 78 (1993) p.633-640, Site occupancies in monoclinic amphiboles: Rietveld structure refinement of, synthetic magnesium cobalt potassium richterite, Sample: KNi0, Atomic parameters from ICSD

View Additional jPOWD Structure files for Richterite
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [3] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [4] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [5] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [6] [60] [61] [62] [63] [64] [65] [66] [67] [68] [69] [7] [8] [9]
 

Physical Properties of Richterite

Help on Cleavage: Cleavage: [110] Perfect, [100] Perfect
Help on Color: Color: Blue, Brown, Brown red, Gray violet, Yellow.
Help on Density: Density: 3.09
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Richterite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2002,KPDmeas= 0.2028,KC= 0.2052
Help on Optical Data: Optical Data: Biaxial (-), a=1.615, b=1.629, g=1.636, bire=0.0210, 2V(Calc)=70, 2V(Meas)=68.
 

Calculated Properties of Richterite

Help on Electron Density: Electron Density:

relectron=3.06 gm/cc
note: rRichterite =3.09 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02313
Boson Index = 0.97687
Help on Photoelectric: Photoelectric:

PERichterite = 5.54 barns/electron
U=PERichterite x relectron= 16.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Richterite is Not Radioactive
 

Richterite Classification
Help on Dana Class: Dana Class: 66.1.3b.9 (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.09-10 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 Richterite Information
Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Richterite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Dunn) 10 -Google Images 11 -Google Scholar 12 -Handbook of Mineralogy (MinSocAm) 13 -Handbook of Mineralogy (UofA) 14 -MinDAT 15 -MinMax(Deutsch) 16 -MinMax(English) 17 -Mineralienatlas (Deutsch) 18 -QUT Mineral Atlas 19 - Scandinavian mineral gallery 20 - WWW-MINCRYST 21 -École des Mines de Paris

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Richterite

Na(CaNa)(Mg,Fe++)5[Si8O22](OH)2
Dana No: 66.1.3b.9 Strunz No: VIII/F.09-10
Locality:

 

Notes:

 
 
   
 
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