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Dresserite Mineral Data

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General Dresserite Information

Help on Chemical  Formula: Chemical Formula: BaAl2(CO3)2(OH)4•(H2O)
Help on Composition: Composition: Molecular Weight = 397.35 gm
   Barium    34.56 %  Ba   38.59 % BaO
   Aluminum  13.58 %  Al   25.66 % Al2O3
   Hydrogen   1.52 %  H    13.60 % H2O
   Carbon     6.05 %  C    22.15 % CO2
   Oxygen    44.29 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaAl2(CO3)2(OH)4•(H2O)
Help on Environment: Environment: Vugs in an alkalic sill in limestone.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Francon quarry, Montreal Island, Montreal, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Alexander Dresser (1866-1954), Canadian geologist who contributed to knowledge of the Monteregian Hills.
Help on Name Pronunciation: Name Pronunciation: Dresserite + Pronunciation Say DRESSERITE
Help on Synonym: Synonym: IMA1968-027
 

Dresserite Image

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  Dresserite

Comments: Radiating spheres of dresserite on matrix.
Location: Francon Quarry, Montreal, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Dresserite

Comments: White divergent sprays of fibrous crystals dresserite crystals.
Location: Francon quarry, Montréal, Jacques Cartier Co., Québec, Canada. Scale: Crystal size 5mm.
© Tom Loomis / Dakota Matrix

Dresserite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5508:1:0.3345
Help on Cell Dimensions: Cell Dimensions: a = 9.27, b = 16.83, c = 5.63, Z = 4; V = 878.36 Den(Calc)= 3.00
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): 8.09(1), 6.23(0.6), 3.66(0.5),
 

Physical Properties of Dresserite

Help on Color: Color: White.
Help on Density: Density: 2.96
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Dresserite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1865,KPDmeas= 0.189,KC= 0.1955
Ncalc = 1.58 - 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.518, g=1.601, bire=0.0830, 2V(Meas)=30-40.
 

Calculated Properties of Dresserite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Dresserite =2.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEDresserite = 146.94 barns/electron
U=PEDresserite x rElectron Density= 411.57 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dresserite is Not Radioactive
 

Dresserite Classification

Help on  Dana Class: Dana Class: 16b.02.01.02 (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 Dresserite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Dresserite :
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

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Print or Cut-and-Paste your Dresserite Specimen Label here :

Dresserite

BaAl2(CO3)2(OH)4•(H2O)
Dana No: 16b.02.01.02 Strunz No: 05.DB.10
Locality:

 

Notes:

 

 
   
 


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