Roggianite Mineral Data + Say ROGGIANITE

General Roggianite Information

Help on Chemical  Formula: Chemical Formula: Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O)
Help on Composition: Composition: Molecular Weight = 540.72 gm
   Calcium    14.82 %  Ca   20.74 % CaO
   Beryllium   1.67 %  Be    4.63 % BeO
   Aluminum    9.98 %  Al   18.86 % Al2O3
   Silicon    20.78 %  Si   44.45 % SiO2
   Hydrogen    1.27 %  H    11.33 % H2O
   Oxygen     51.49 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Be(OH)2Al2(Si4O13)·2.4(H2O)
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Type locality: in albitite dike at Alpe Rosso in Val Vigezzo about 1.5 km south of Orcesco, Novara Province, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Aldo G. Roggiani, a teacher of natural sciences, who first found the mineral.
Help on Synonym: Synonym: Ginzburgite
  ICSD 71349
  PDF 39-366
 

Roggianite Image

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

Roggianite

Comments: Glassy white fibrous roggianite aggregate.
Location: Murzinka, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roggianite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.49989
Help on Cell Dimensions: Cell Dimensions: a = 18.332, c = 9.164, Z = 8; V = 3,079.67 Den(Calc)= 2.33
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mcm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 13.08(1), 6.13(0.8), 9.27(0.8),
Click Here for Large Roggianite 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


Giuseppetti G , Mazzi F , Tadini C , Galli E , Neues Jahrbuch fur Mineralogie, Monatshefte , 1991 (1991) p.307-314, The revised crystal structure of roggianite: Ca2[Be(OH)2Al2Si4O13]<2.5H2O, Locality: Val Vigezzo, Novara, Italy

 

Physical Properties of Roggianite

Help on Cleavage: Cleavage: [110] Perfect
Help on Color: Color: Yellow, Yellowish white, White.
Help on Density: Density: 2.02
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Roggianite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.17 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2279,KPDmeas= 0.2629,KC= 0.2247
Help on Optical Data: Optical Data: Uniaxial (+), w=1.527, e=1.535, bire=0.0080.
 

Calculated Properties of Roggianite

Help on Electron Density: Electron Density:

relectron=2.34 gm/cc
note: rRoggianite =2.33 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.02681
Boson Index = 0.97319
Help on Photoelectric: Photoelectric:

PERoggianite = 2.94 barns/electron
U=PERoggianite x relectron= 6.88 barns/cc.

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

Roggianite is Not Radioactive

 

Roggianite Classification

Help on  Dana Class: Dana Class: 77.1.7.4 (77)Tectosilicate Zeolite group
  (77.1)true zeolites
  (77.1.7)Brewsterite and related species
 
77.1.7.1 Brewsterite-Sr (Sr,Ba)Al4Si12O32·10(H2O) P 21/m 2/m
 
77.1.7.1a Brewsterite-Ba! (Ba,Sr)Al2Si6O16·5(H2O) P 21/m,P 21 Mono
 
77.1.7.2 Yugawaralite CaAl2Si6O16·4(H2O) Pc m
 
77.1.7.3 Goosecreekite CaAl2Si6O16·5(H2O) P 21 2
 
77.1.7.4 Roggianite Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O) I 4/mcm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/J.19-10 VIII - Silicates
  VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites
  VIII/J.19 - Roggianite series
 
VIII/J.19-10 Roggianite Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O) I 4/mcm 4/m 2/m 2/m
 

Other Roggianite Information

Help on References: References: NAME( CanMin, v 35, p 1589) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Roggianite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Roggianite using:

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

Visit our Advertisers for Roggianite :

AA Mineral Specimens
B & L Fine Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
Heliodor
John Betts Fine Minerals
Mason's Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
The GeoZone
Wrights Rock Shop

Translate Roggianite Mineral Data :

Ask about Roggianite 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 Roggianite Specimen Label here :

Roggianite

Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O)
Dana No: 77.1.7.4 Strunz No: VIII/J.19-10
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