Sohngeite Mineral Data

Sohngeite Mineral Data +

[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974

General Sohngeite Information

Chemical Formula:

Ga(OH)3

Composition:

Molecular Weight = 120.75 gm

Gallium 57.74 % Ga 77.62 % Ga₂O₃

Hydrogen 2.50 % H 22.38 % H₂O

Oxygen 39.75 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ga(OH)₃

IMA Status:

Approved IMA 1965

Locality:

Link to MinDat.org Location Data.

Synonym:

Soehngeite

Sohngeite Image

Images:

Sohngeite

Comments: Minute, pale yellow sohngeite crystals to less than 0.2mm on matrix.
Location: Tsumeb mine, Tsumeb , Namibia. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Sohngeite Crystallography

Cell Dimensions:

a = 7.47, Z = 8; V = 416.83 Den(Calc)= 3.85

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: I m3

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

By Intensity(I/I_o): 3.74(1), 1.669(0.7), 2.63(0.6),

Physical Properties of Sohngeite

Color:

White, Pale yellow, Pale brown, Pale greenish yellow.

Density:

3.84

Diaphaniety:

Transparent to Translucent

Hardness:

4-4.5 - Between Fluorite and Apatite

Optical Properties of Sohngeite

Gladstone-Dale:

CI meas= 0.079 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1912,KPDmeas= 0.1917,KC= 0.208

Optical Data:

Isotropic, n=1.736.

Calculated Properties of Sohngeite

Electron Density:

r_electron=3.69 gm/cc
note: r_Sohngeite=3.84 gm/cc.

Fermion Index

Fermion Index = 0.00019
Boson Index = 0.99981

Photoelectric:

PE_Sohngeite= 31.43 barns/electron
U=PE_Sohngeite x r_electron= 115.94 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sohngeite is Not Radioactive

Sohngeite Classification

Dana Class:

6.3.5.2 (6)Hydroxides and Oxides Containing Hydroxyl

(6.3)with (OH)3 or (OH)6 groups

(6.3.5)Dana Group

6.3.5.1 Dzhalindite In(OH)3 I m3 2/m 3

6.3.5.2 Sohngeite Ga(OH)3 I m3 2/m 3

6.3.5.3 Bernalite Fe(OH)3 I mmm 2/m 2/m 2/m

Strunz Class:

IV/F.15-10 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.15 - Söhngeite - Bernalite series

IV/F.15-10 Sohngeite Ga(OH)3 I m3 2/m 3

IV/F.15-20 Dzhalindite In(OH)3 I m3 2/m 3

IV/F.15-30 Bernalite Fe(OH)3 I mmm 2/m 2/m 2/m

Other Sohngeite Information

References:

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

See Also:

Links to other databases for Sohngeite :
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 -École des Mines de Paris

Search for Sohngeite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Sohngeite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Sohngeite Mineral Data :

Ask about Sohngeite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Sohngeite

Ga(OH)3
Dana No: 6.3.5.2 Strunz No: IV/F.15-10
Locality:

Notes: