Mineralogy Database

Joesmithite Mineral Data

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General Joesmithite Information

Help on Chemical  Formula: Chemical Formula: PbCa2(Mg,Fe++,Fe+++)5Si6Be2O22(OH)2
Help on Composition: Composition: Molecular Weight = 1,043.42 gm
   Calcium     7.30 %  Ca   10.21 % CaO
   Magnesium   5.82 %  Mg    9.66 % MgO
   Manganese   1.58 %  Mn    2.04 % MnO
   Beryllium   1.55 %  Be    4.31 % BeO
   Iron       10.70 %  Fe    2.75 % FeO / 12.24 % Fe2O3
   Silicon    16.15 %  Si   34.55 % SiO2
   Hydrogen    0.17 %  H     1.55 % H2O
   Lead       19.86 %  Pb   20.62 % Pb2O
   Oxygen     36.49 %  O
   Fluorine    0.36 %  F     0.36 % F
                -   %   F    -0.15 % -O=F2    
             ______        ______ 
             100.00 %       98.16 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbCa1.9Mg2.5Fe3+1.6Fe2+0.4Mn2+0.3Si6Be1.8O22(OH)1.8F0.2
Help on Environment: Environment: Metamorphosed manganese ores.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: At Lanban, Varmalnd, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Prof. Joseph Victor Smith (1928-), English-American mineralogist and petrologist of the University of Chicago, Chicago, Illinois, USA.
Help on Name Pronunciation: Name Pronunciation: Joesmithite + Pronunciation Say JOESMITHITE
Help on Synonym: Synonym: ICSD 74285
  PDF 22-531
 

Joesmithite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5528:1:0.2925
Help on Cell Dimensions: Cell Dimensions: a = 9.88, b = 17.87, c = 5.227, Z = 2; beta = 105.67° V = 888.56 Den(Calc)= 3.90
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.33(1), 2.53(0.6), 2.564(0.6),
 

Physical Properties of Joesmithite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Black.
Help on Density: Density: 3.83
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Subadamantine
Help on Streak: Streak: light brown
 

Optical Properties of Joesmithite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.132 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.112 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1959,KPDmeas= 0.1995,KC= 0.1762
Ncalc = 1.67 - 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.747, b=1.765, g=1.78, bire=0.0330, 2V(Calc)=84, 2V(Meas)=60-70.
Help on Pleochroism (x): Pleochroism (x): Olive.
Help on Pleochroism (y): Pleochroism (y): olive brown.
Help on Pleochroism (z): Pleochroism (z): Olive.
 

Calculated Properties of Joesmithite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.70 gm/cc
note: Specific Gravity of Joesmithite =3.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEJoesmithite = 326.93 barns/electron
U=PEJoesmithite x rElectron Density=1,209.00 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Joesmithite is Not Radioactive
 

Joesmithite Classification

Help on  Dana Class: Dana Class: 66.01.04.01 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.04)Dana Group
 
66.01.04.01 Joesmithite PbCa2(Mg,Fe,Fe)5Si6Be2O22(OH)2 P 2/a 2/m
Help on  Strunz Class: Strunz Class: 09.DE.10 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.10 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.10 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m
 
09.DE.10 Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m
 
09.DE.10 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.10 Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m
 
09.DE.10 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m
 
09.DE.10 Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m
 
09.DE.10 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m
 
09.DE.10 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.10 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m
 
09.DE.10 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.10 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.10 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
09.DE.10 Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m
 
09.DE.10 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
09.DE.10 Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m
 
09.DE.10 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.10 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m
 
09.DE.10 Joesmithite PbCa2(Mg,Fe,Fe)5Si6Be2O22(OH)2 P 2/a 2/m
 
09.DE.10 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m
 
09.DE.10 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
09.DE.10 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.10 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m
 
09.DE.10 Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono
 
09.DE.10 Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m
 
09.DE.10 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
09.DE.10 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m
 
09.DE.10 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m
 
09.DE.10 Fluoro-magnesiohastingsite! (Na,K)Ca2(Mg,Fe,Ti)5(Si,Al)8O22F2 C 2/m 2/m
 
09.DE.10 Parvo-manganotremolite! [](CaMn)2Mg5(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.10 Fluoropargasite! NaCa2(Mg3FeAl)5(Si6Al2O22)F2 C 2/m 2/m
 
09.DE.10 Parvo-mangano-edenite! Na(CaMn)2Mg5(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.10 Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m
 
09.DE.10 Fluoro-potassichastingsite! KCa2(Fe2,Mg2,Fe)S5(Si6Al2)8O22F2 C 2/m 2/m
 
09.DE.10 Chloro-potassichastingsite! KCa2(Fe3MgFe)(Si6Al2)S8O22Cl2 C 2/m 2/m
 
09.DE.10 Potassic-magnesiohastingsite! (K,Na)Ca2(Mg,Fe,Fe,Al)5(Si,Al)8O22(OH,Cl)2 C 2/m 2/m
 
09.DE.10 Potassic-ferropargasite KCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m
 

Other Joesmithite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Joesmithite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Joesmithite

PbCa2(Mg,Fe++,Fe+++)5Si6Be2O22(OH)2
Dana No: 66.01.04.01 Strunz No: 09.DE.10
Locality:

 

Notes:

 

 
   
 


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