Wesselsite Mineral Data

Wesselsite Mineral Data +

[Mineral Specimens] [Mineral Locations] [About Us] [Search] [Register]
Greenside Minerals
Newest website on the Internet for top quality, affordable minerals from around the World
We specialize in minerals from the UK and Ireland

General Wesselsite Information

Chemical Formula:

SrCu++Si4O10

Composition:

Molecular Weight = 423.50 gm

Strontium 20.69 % Sr 24.47 % SrO

Copper 15.00 % Cu 18.78 % CuO

Silicon 26.53 % Si 56.75 % SiO₂

Oxygen 37.78 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

SrCuSi₄O₁₀

IMA Status:

Approved IMA 1994 (Dana # Added)

Locality:

Wessels mine, Kalahari Manganese field, Kuruman Hill, Cape Province, South Africa. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

IMA1994-055

Search for Wesselsite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Wesselsite Crystallography

Axial Ratios:

a:c = 1:2.1143

Cell Dimensions:

a = 7.366, c = 15.574, Z = 4; V = 845.01 Den(Calc)= 3.33

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/ncc

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

By Intensity(I/I_o): 3.33(1), 3.12(0.55), 3.03(0.5),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Chakoumakos B C , Fernandez-Baca J A , Boatner L A , Journal of Solid State Chemistry , 103 (1993) p.105-113, Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba), by Rietveld analysis of neutron powder diffraction data, Note: gillespite structure, Locality: synthetic

Physical Properties of Wesselsite

Cleavage:

[001] Perfect

Color:

Blue.

Density:

3.2

Diaphaniety:

Transparent

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous (Glassy)

Streak:

blue white

Optical Properties of Wesselsite

Gladstone-Dale:

CI meas= -0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1832,KPDmeas= 0.1906,KC= 0.1854

Optical Data:

Uniaxial (-), e=1.59, w=1.63, bire=0.0400.

Calculated Properties of Wesselsite

Electron Density:

r_electron=3.19 gm/cc
note: r_Wesselsite=3.33 gm/cc.

Fermion Index

Fermion Index = 0.02705
Boson Index = 0.97295

Photoelectric:

PE_Wesselsite= 30.44 barns/electron
U=PE_Wesselsite x r_electron= 97.18 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wesselsite is Not Radioactive

Wesselsite Classification

Dana Class:

71.2.3.4 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.2)with 2:1 Layers

(71.2.3)Cuprorivaite group

71.2.3.1 Cuprorivaite CaCuSi4O10 P 4/nnc 4/m 2/m 2/m

71.2.3.2 Gillespite BaFeSi4O10 P 4/ncc 4/m 2/m 2/m

71.2.3.3 Effenbergerite BaCuSi4O10 P 4/nnc 4/m 2/m 2/m

71.2.3.4 Wesselsite ! SrCuSi4O10 P 4/ncc 4/m 2/m 2/m

Strunz Class:

VIII/H.02-20 VIII - Silicates

VIII/H - Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others

VIII/H.02 - Davanite - Dalyite series

VIII/H.02-10 Cuprorivaite CaCuSi4O10 P 4/nnc 4/m 2/m 2/m

VIII/H.02-20 Wesselsite SrCuSi4O10 P 4/ncc 4/m 2/m 2/m

VIII/H.02-30 Effenbergerite BaCuSi4O10 P 4/nnc 4/m 2/m 2/m

VIII/H.02-40 Gillespite BaFeSi4O10 P 4/ncc 4/m 2/m 2/m

VIII/H.02-50 Sanbornite BaSi2O5 Pmnb 2/m 2/m 2/m

VIII/H.02-60 Bigcreekite! BaSi2O5·4(H2O) P nma 2/m 2/m 2/m

Other Wesselsite Information

References:

PHYS. PROP.(Min.Mag.,Vol.60,p795,1996) OPTIC PROP.(Min.Mag.,Vol.60,p795,1996)

See Also:

Links to other databases for Wesselsite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas 10 - WWW-MINCRYST

Search for Wesselsite using:

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

Visit our Advertisers for Wesselsite :
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 Wesselsite Mineral Data :

Ask about Wesselsite 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 Wesselsite Specimen Label here :

Wesselsite

SrCu++Si4O10
Dana No: 71.2.3.4 Strunz No: VIII/H.02-20
Locality:

Notes: