Mineralogy Database

Hydrodresserite Mineral Data

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General Hydrodresserite Information

Help on Chemical  Formula: Chemical Formula: BaAl2(CO3)2(OH)4•3(H2O)
Help on Composition: Composition: Molecular Weight = 433.38 gm
   Barium    31.69 %  Ba   35.38 % BaO
   Aluminum  12.45 %  Al   23.53 % Al2O3
   Hydrogen   2.33 %  H    20.78 % H2O
   Carbon     5.54 %  C    20.31 % CO2
   Oxygen    47.99 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaAl2(CO3)2(OH)4•3(H2O)
Help on Environment: Environment: Vugs in metamorphosed limestone, near the contact zone of a dawsonite-rich silicocarbonatite sill.
Help on IMA Status: IMA Status: Approved IMA 1977
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 essential water and characteristic dehydration to dresserite under low humidity conditions.
Help on Name Pronunciation: Name Pronunciation: Hydrodresserite + Pronunciation Say HYDRODRESSERITE
Help on Synonym: Synonym: ICSD 201349
  PDF 29-145

Hydrodresserite Image

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  Hydrodresserite   Weloganite

Comments: White spherical aggregates of hydrodresserite with radiating structure with columnar weloganite.
Location: Francon Quarry, Montreal, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hydrodresserite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9373:1:0.5411
Help on Cell Dimensions: Cell Dimensions: a = 9.755, b = 10.407, c = 5.632, Z = 2; alpha = 95.695°, beta = 92.273°, gamma = 115.643° V = 512.50 Den(Calc)= 2.81
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.52(1), 3.42(0.7), 3.1(0.6),

Physical Properties of Hydrodresserite

Help on Cleavage: Cleavage: {010} Perfect, {210} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.8
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Hydrodresserite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.037 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1998,KPDmeas= 0.2012,KC= 0.2075
Ncalc = 1.58 - 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.501, b=1.594, g=1.595, bire=0.0940, 2V(Calc)=10, 2V(Meas)=17.

Calculated Properties of Hydrodresserite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.69 gm/cc
note: Specific Gravity of Hydrodresserite =2.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEHydrodresserite = 132.85 barns/electron
U=PEHydrodresserite x rElectron Density= 357.05 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrodresserite is Not Radioactive

Hydrodresserite Classification

Help on  Dana Class: Dana Class: 16b.02.02.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.02)where (A)m (B)n (XO3)p Zq � x(H2O), with (m+n):p=3:2
  (16b.02.02)Dana Group
16b.02.02.01 Hydrodresserite BaAl2(CO3)2(OH)4•3(H2O) P1 1
Help on  Strunz Class: Strunz Class: 05.DB.15 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DB -With large and medium-sized cations
05.DB.15 Hydrodresserite BaAl2(CO3)2(OH)4•3(H2O) P1 1

Other Hydrodresserite 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 Hydrodresserite :
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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Dana No: 16b.02.02.01 Strunz No: 05.DB.15





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