Mineralogy Database

Dundasite Mineral Data

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General Dundasite Information

Help on Chemical  Formula: Chemical Formula: PbAl2(CO3)2(OH)4•(H2O)
Help on Composition: Composition: Molecular Weight = 467.23 gm
   Aluminum  11.55 %  Al   21.82 % Al2O3
   Hydrogen   1.29 %  H    11.57 % H2O
   Lead      44.35 %  Pb   47.77 % PbO
   Carbon     5.14 %  C    18.84 % CO2
   Oxygen    37.67 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbAl2(CO3)2(OH)4•(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1893
Help on Locality: Locality: Dundas and Mt. Read, Tasmania. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Dundasite + Pronunciation Say DUNDASITE
Help on Synonym: Synonym: ICSD 9348
  PDF 21-936
 

Dundasite Image

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  Dundasite

Comments: Bluish crystalline spray of Dundasite on azurite.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Dundasite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5535:1:0.3431
Help on Cell Dimensions: Cell Dimensions: a = 9.05, b = 16.35, c = 5.61, Z = 4; V = 830.10 Den(Calc)= 3.74
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.91(1), 3.6(0.8), 3.09(0.6),
 

Physical Properties of Dundasite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Sky blue, White, Light green.
Help on Density: Density: 3.41 - 3.55, Average = 3.48
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Dundasite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.055 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1843,KPDmeas= 0.1981,KC= 0.1878
Ncalc = 1.64 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.602, b=1.716, g=1.75, bire=0.1480, 2V(Calc)=54, 2V(Meas)=30-40.
 

Calculated Properties of Dundasite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.43 gm/cc
note: Specific Gravity of Dundasite =3.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEDundasite = 743.64 barns/electron
U=PEDundasite x rElectron Density=2,547.72 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dundasite is Not Radioactive
 

Dundasite Classification

Help on  Dana Class: Dana Class: 16b.02.01.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.02)where (A)m (B)n (XO3)p Zq � x(H2O), with (m+n):p=3:2
  (16b.02.01)Dundasite Group
 
16b.02.01.01 Dundasite PbAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.02 Dresserite BaAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.03 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
16b.02.01.04 Petterdite! PbCr2(CO3)2(OH)4•H2O Pbnm 2/m 2/m 2/m
 
16b.02.01.05 Kochsandorite! CaAl2(CO3)2(OH)4•H2O P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 05.DB.10 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DB -With large and medium-sized cations
 
05.DB.10 Dresserite BaAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Dundasite PbAl2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Kochsandorite! CaAl2(CO3)2(OH)4•H2O P nma 2/m 2/m 2/m
 
05.DB.10 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4•(H2O) Pbmm 2/m 2/m 2/m
 
05.DB.10 Petterdite! PbCr2(CO3)2(OH)4•H2O Pbnm 2/m 2/m 2/m
 

Other Dundasite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Dundasite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Dundasite

PbAl2(CO3)2(OH)4•(H2O)
Dana No: 16b.02.01.01 Strunz No: 05.DB.10
Locality:

 

Notes:

 

 
   
 


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