Rossmanite Mineral Data

Rossmanite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Rossmanite Information

Help on Chemical Formula: Chemical Formula: [ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Help on Composition: Composition: Molecular Weight = 923.75 gm
   Lithium    0.75 %  Li    1.62 % Li2O
   Aluminum  23.37 %  Al   44.15 % Al2O3
   Silicon   18.24 %  Si   39.03 % SiO2
   Boron      3.51 %  B    11.30 % B2O3
   Hydrogen   0.44 %  H     3.90 % H2O
   Oxygen    53.69 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: LiAl8Si6O18(BO3)3(OH)4
Help on Environment: Environment: Granitic pegmatite hosted by biotite and hornblende gneiss.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Found in the Hradisko quarry, in the Rozná lepidolite subtype of granitic pegmatite, northeastern part of the Strázek Moldanubicum, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after George R. Rossman (1945-), California Institute of Technology, Pasadena, CA, USA, in recognition for his work on the spectroscopy of the tourmaline minerals.
Help on Name Pronunciation: Name Pronunciation: Rossmanite + Pronunciation Say ROSSMANITE
Help on Synonym: Synonym: ICSD 85557
  IMA1996-018
  PDF (76-1951)
 

Rossmanite Image

Click Here for Larger Rossmanite Image in a New Browser Window Images:
Click Here for Larger Rossmanite Image

Rossmanite

Comments: Pale pink to tan translucent prismatic rossmanite crystals.
Location: Near Rozna, Western Moravia, Jihomoravsky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rossmanite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.44927
Help on Cell Dimensions: Cell Dimensions: a = 15.77, c = 7.085, Z = 3; V = 1,525.93 Den(Calc)= 3.02
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.95(1), 2.552(0.93), 1.898(0.72),
Click Here for Large Rossmanite 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


Selway J B , Novak M , Hawthorne F C , Cerny P , Ottolini L , Kyser T K , American Mineralogist , 83 (1998) p.896-900

View Additional jPOWD Structure files for Rossmanite
[1] [2]
 

Physical Properties of Rossmanite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pink, Pale pink.
Help on Density: Density: 3
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Rossmanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2101,KPDmeas= 0.2115,KC= 0.2151
Ncalc = 1.65
Help on Optical Data: Optical Data: Uniaxial (-), e=1.624, w=1.645, bire=0.0210.
 

Calculated Properties of Rossmanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.97 gm/cc
note: Specific Gravity of Rossmanite =3.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PERossmanite = 1.44 barns/electron
U=PERossmanite x rElectron Density= 4.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rossmanite is Not Radioactive
 

Rossmanite Classification
Help on Dana Class: Dana Class: 61.03a.01.03 (61)Cyclosilicate Six-Membered Rings
  (61.03a)with borate groups (Alkali-Deficient Tourmaline Subgroup)
  (61.03a.01)Foitite Subgroup
 
61.03a.01.01 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m
 
61.03a.01.02 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
61.03a.01.03 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
Help on Strunz Class: Strunz Class: 09.CK.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CK -[Si6O18]12- 6-membered single rings, with insular complex anions
 
09.CK.05 Chromdravite! NaMg3(Cr,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Feruvite! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Dravite NaMg3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m
 
09.CK.05 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m
 
09.CK.05 Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Olenite! NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m
 
09.CK.05 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Schorl NaFe3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Uvite (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m
 
09.CK.05 Vanadiumdravite! NaMg3V6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Hydroxyuvite! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) R 3m 3m
 
09.CK.05 Schorl-(F)! NaFe3Al6Si6O18)(BO3)3(OH)3(F,OH) R 3m 3m
 

Other Rossmanite Information
Help on References: References: NAME( AmMin) PHYS. PROP.(Am.Min.,Vol.83,p896-900,1998) OPTIC PROP.(AmMin)
Help on See Also: See Also: Links to other databases for Rossmanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - CalTech Mineral Spectroscopy
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
12 - WWW-MINCRYST

Search for Rossmanite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Rossmanite :

A Bijoux Google Search for Rossmanite
Adam's Minerals Google Search for Rossmanite
Cape Minerals Google Search for Rossmanite
Dakota Matrix Minerals Google Search for Rossmanite
Excalibur Mineral Corp. Google Search for Rossmanite
Exceptional Minerals Google Search for Rossmanite
John Betts Fine Minerals Search for Rossmanite
McDougall Minerals Google Search for Rossmanite
Mineral News Website Link
Rock and Mineral Shows Google Search for Rossmanite
Weinrich Minerals, Inc. Google Search for Rossmanite

Ask about Rossmanite 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 Espańol

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

Rossmanite

[ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Dana No: 61.03a.01.03 Strunz No: 09.CK.05
Locality:

 

Notes: