Magnesiostaurolite Mineral Data

Dan Weinrich Fine Minerals
[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions]
Dan Weinrich Fine Minerals
Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows

General Magnesiostaurolite Information

Help on Chemical  Formula: Chemical Formula: [ ]4Mg4Al16(Al,[ ])2Si8O40[O6,(OH)2]
Help on Composition: Composition: Molecular Weight = 1,562.60 gm
   Lithium     0.42 %  Li    0.90 % Li2O
   Magnesium   4.70 %  Mg    7.79 % MgO
   Titanium    0.12 %  Ti    0.20 % TiO2
   Aluminum   30.36 %  Al   57.36 % Al2O3
   Zinc        0.08 %  Zn    0.10 % ZnO
   Iron        0.57 %  Fe    0.74 % FeO
   Silicon    14.31 %  Si   30.61 % SiO2
   Hydrogen    0.26 %  H     2.29 % H2O
   Oxygen     49.19 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg0.72Fe2+0.16Mg1.85Li0.94Zn0.02Al15.96Ti0.04Al1.58Mg0.45Si7.96Al0.04O40.04(OH)3.98O4.02
Help on Environment: Environment: Anhedral inclusions up to 250 micro-m in pyrope megablasts. Ultra-high pressure mineral.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana #Added)
Help on Locality: Locality: Coesite-bearing Dora-Maira massif, Italian Western Alps. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the magnesium-dominant analog of staurolite.
Help on Synonym: Synonym: IMA1992-035
 

Search for Magnesiostaurolite Images

Click Here To Search 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.

  

Magnesiostaurolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4758:1:0.3405
Help on Cell Dimensions: Cell Dimensions: a = 7.8706, b = 16.5411, c = 5.6323, Z = 1; beta = 90.007° V = 733.26 Den(Calc)= 3.54
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.968(1)(062), 1.39(0.82)(462), 2.39(0.5)(132),2.678(0.38)(151), 2.37(0.33)(330),
Click Here for Large Magnesiostaurolite Structure Window 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


Chopin C , Goffe B , Ungaretti L , Oberti R , European Journal of Mineralogy , 15 (2003) p.167-176, Magnesiostaurolite and zincostaurolite: mineral description with a petrogenetic, and crystal-chemical update

 

Physical Properties of Magnesiostaurolite

Help on Color: Color: Colorless.
Help on Diaphaniety: Diaphaniety: Transparent
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 7-7.5 - Quartz-Garnet
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: white
 

Optical Properties of Magnesiostaurolite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2003,KC= 0.2109
Help on Optical Data: Optical Data: Biaxial (?), b=1.709
 

Calculated Properties of Magnesiostaurolite

Help on Electron Density: Electron Density:

relectron=3.50 gm/cc
note: rMagnesiostaurolite =3.54 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01224
Boson Index = 0.98776
Help on Photoelectric: Photoelectric:

PEMagnesiostaurolite = 1.78 barns/electron
U=PEMagnesiostaurolite x relectron= 6.22 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Magnesiostaurolite is Not Radioactive

 

Magnesiostaurolite Classification

Help on  Dana Class: Dana Class: 52.2.3.2 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.2)with cations in [4] and >[4] coordination
  (52.2.3)Dana Group
 
52.2.3.1 Staurolite (Fe,Mg)2Al9(Si,Al)4O20(O,OH)4 C 2/m 2/m
 
52.2.3.2 Magnesiostaurolite ! []4Mg4Al16(Al,[])2Si8O40[O6,(OH)2] C 2/m 2/m
 
52.2.3.3 Zincostaurolite! []4Zn4Al16(Al,[])2Si8O40[O6,(OH)2] C 2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/B.03-03 VIII - Silicates
  VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]
  VIII/B.03 - Staurolite - Gerstmannite series
 
VIII/B.03-03 Magnesiostaurolite []4Mg4Al16(Al,[])2Si8O40[O6,(OH)2] C 2/m 2/m
 
VIII/B.03-05 Zincostaurolite! []4Zn4Al16(Al,[])2Si8O40[O6,(OH)2] C 2/m 2/m
 
VIII/B.03-10 Staurolite (Fe,Mg)2Al9(Si,Al)4O20(O,OH)4 C 2/m 2/m
 
VIII/B.03-20 Gerstmannite (Mg,Mn)2ZnSiO4(OH)2 Bbam 2/m 2/m 2/m
 

Other Magnesiostaurolite Information

Help on References: References: NAME( AmMin, 88,:1626) PHYS. PROP.(AmMin, 88,:1626) OPTIC PROP.(AmMin, 88,:1626)
Help on See Also: See Also: Links to other databases for Magnesiostaurolite :
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

Search for Magnesiostaurolite using:

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

Visit our Advertisers for Magnesiostaurolite :
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 Magnesiostaurolite Mineral Data :

Ask about Magnesiostaurolite 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 Espaņol

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

Magnesiostaurolite

[ ]4Mg4Al16(Al,[ ])2Si8O40[O6,(OH)2]
Dana No: 52.2.3.2 Strunz No: VIII/B.03-03
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links