Hydrodresserite Mineral Data

Hydrodresserite Mineral Data +

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General Hydrodresserite Information

Chemical Formula:

BaAl2(CO3)2(OH)4·3(H2O)

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

Empirical Formula:

BaAl₂(CO₃)₂(OH)₄·3(H₂O)

IMA Status:

Approved IMA 1977

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 201349

IMA1976-036

PDF 29-145

Hydrodresserite Image

Images:

Click Here for Larger Hydrodresserite Image

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

Axial Ratios:

a:b:c =0.9373:1:0.5411

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

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 8.52(1), 3.42(0.7), 3.1(0.6),

Crystal Structure:

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Szymanski J T , The Canadian Mineralogist , 20 (1982) p.253-262, The crystal structure of hydrodresserite BaAl2(CO3)2(OH)4.3H2O

Physical Properties of Hydrodresserite

Cleavage:

[010] Perfect, [210] Perfect

Color:

Colorless, White.

Density:

2.8

Diaphaniety:

Transparent

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Hydrodresserite

Gladstone-Dale:

CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2005,KPDmeas= 0.2012,KC= 0.2075

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

Electron Density:

r_electron=2.69 gm/cc
note: r_{Hydrodresserite}=2.80 gm/cc.

Fermion Index

Fermion Index = 0.05731
Boson Index = 0.94269

Photoelectric:

PE_{Hydrodresserite}= 132.85 barns/electron
U=PE_{Hydrodresserite} x r_electron= 357.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydrodresserite is Not Radioactive

Hydrodresserite Classification

Dana Class:

16b.2.2.1 (16b)Carbonates - Hydroxyl or Halogen

(16b.2)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=3:2

(16b.2.2)Dana Group

16b.2.2.1 Hydrodresserite BaAl2(CO3)2(OH)4·3(H2O) P1 1

Strunz Class:

V/E.08-70 V - Nitrates, Carbonates and Borates

V/E - Water-bearing carbonates with unfamiliar anions

V/E.08 - Strontiodresserite - Dundasite series

V/E.08-05 Thomasclarkite-(Y)! (Na,Ce)(Y,REE)(HCO3)(OH)3·4(H2O) P 2 2

V/E.08-10 Kamphaugite-(Y) Ca(Y,REE)(CO3)2(OH)2·3(H2O) P 4₁2₁2 4 2 2

V/E.08-20 Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) P mmm 2/m 2/m 2/m

V/E.08-25 Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) Pm m

V/E.08-28 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-30 Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-40 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m

V/E.08-50 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-60 Dresserite BaAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-70 Hydrodresserite BaAl2(CO3)2(OH)4·3(H2O) P1 1

V/E.08-80 Montroyalite Sr4Al8(CO3)3(OH,F)26·10-11(H2O) Unk. Tri

V/E.08-90 Dundasite PbAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m

V/E.08-95 Petterdite! PbCr2(CO3)2(OH)4·H2O Pbnm 2/m 2/m 2/m

V/E.08-100 Barstowite Pb4(CO3)Cl6·(H2O) P 2₁/m 2/m

Other Hydrodresserite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hydrodresserite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Hydrodresserite

BaAl2(CO3)2(OH)4·3(H2O)
Dana No: 16b.2.2.1 Strunz No: V/E.08-70
Locality:

Notes: