Chiavennite Mineral Data

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


General Chiavennite Information

Help on Chemical Formula: Chemical Formula: CaMnBe2Si5O13(OH)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 531.51 gm
   Calcium     7.54 %  Ca   10.55 % CaO
   Manganese  10.34 %  Mn   13.35 % MnO
   Beryllium   3.39 %  Be    9.41 % BeO
   Silicon    26.42 %  Si   56.52 % SiO2
   Hydrogen    1.14 %  H    10.17 % H2O
   Oxygen     51.17 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMn2+Be2Si5O13(OH)2•2(H2O)
Help on Environment: Environment: Coating beryl in late-stage pegmatites (Tanno, Italy); in vugs in syenite pegmatites (Norway).
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: From Tanno, Chiavenna, Lombardy, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: ICSD 80917
  PDF 35-602
 

Chiavennite Image

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

Chiavennite

Comments: Prismatic micro crystals of chiavennite less than 1mm.
Location: Ute, Sweden. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Chiavennite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.2786:1:0.1565
Help on Cell Dimensions: Cell Dimensions: a = 8.729, b = 31.326, c = 4.903, Z = 4; V = 1,340.70 Den(Calc)= 2.63
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnab
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.903(1), 15.7(1), 3.28(0.75),
Click Here for Large Chiavennite 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


Tazzoli V , Domeneghetti M C , Mazzi F , Cannillo E , European Journal of Mineralogy , 7 (1995) p.1339-1334, The crystal structure of chiavennite

 

Physical Properties of Chiavennite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Yellow, Orange, Red orange.
Help on Density: Density: 2.64
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Chiavennite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2299,KPDmeas= 0.229,KC= 0.2232
Ncalc = 1.59
Help on Optical Data: Optical Data: Biaxial (+), a=1.596, b=1.6, g=1.618, bire=0.0220, 2V(Calc)=52, 2V(Meas)=50.
 

Calculated Properties of Chiavennite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.63 gm/cc
note: Specific Gravity of Chiavennite =2.64 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEChiavennite = 4.57 barns/electron
U=PEChiavennite x rElectron Density= 12.02 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chiavennite is Not Radioactive
 

Chiavennite Classification
Help on Dana Class: Dana Class: 70.05.01.01 (70)Inosilicate Column or Tube Structures
  (70.05)with chains linked by Be
  (70.05.01)Dana Group
 
70.05.01.01 Chiavennite CaMnBe2Si5O13(OH)2•2(H2O) Pnab 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 09.GF.25 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GF -Other Rare Zeolites
 
09.GF.25 Chiavennite CaMnBe2Si5O13(OH)2•2(H2O) Pnab 2/m 2/m 2/m
 

Other Chiavennite Information
Help on References: References: NAME( AntBidBlaNic2) 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 Chiavennite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
16 - Zeolite Database by Bruno Herreros

Search for Chiavennite using:

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

Visit our Advertisers for Chiavennite :

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

Ask about Chiavennite 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 Chiavennite Specimen Label here :

Chiavennite

CaMnBe2Si5O13(OH)2•2(H2O)
Dana No: 70.05.01.01 Strunz No: 09.GF.25
Locality:

 

Notes: