Barysilite Mineral Data

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


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 Barysilite Information

Help on Chemical Formula: Chemical Formula: Pb8Mn(Si2O7)3
Help on Composition: Composition: Molecular Weight = 2,217.04 gm
   Manganese   2.48 %  Mn    3.20 % MnO
   Silicon     7.60 %  Si   16.26 % SiO2
   Lead       74.77 %  Pb   80.54 % PbO
   Oxygen     15.15 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb8Mn2+3(Si2O7)
Help on Environment: Environment: As thin fllms and veinlets in a metamorphosed zinc orebody.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1888
Help on Locality: Locality: Franklin, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for heavy and for SILicon in its composition.
Help on Name Pronunciation: Name Pronunciation: Barysilite + Pronunciation Say BARYSILITE
Help on Synonym: Synonym: ICSD 14370
  PDF 23-404
 

Barysilite Image

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

Barysilite

Comments: Clear, round plates of barysilite on a manganiferous matrix.
Location: Langban, Varmland, Sweden. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Barysilite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:3.9002
Help on Cell Dimensions: Cell Dimensions: a = 9.82, c = 38.3, Z = 6; V = 3,198.55 Den(Calc)= 6.91
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.198(1), 2.96(0.8), 3.307(0.8),
Click Here for Large Barysilite 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


Lajzerowicz J , Acta Crystallographica , 20 (1965) p.357-363, Etude par diffraction des rayons X et absorption infra-rouge, de la barysilite, MnPb8.3Si2O7, et de composes isomorphes

 

Physical Properties of Barysilite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: White, Gray.
Help on Density: Density: 6.11 - 6.72, Average = 6.41
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Massive - Lamellar - Distinctly foliated fine-grained forms.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Barysilite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.084 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1482,KPDmeas= 0.1596,KC= 0.1472
Ncalc = 1.9 - 2.02
Help on Optical Data: Optical Data: Uniaxial (-), e=2.015, w=2.033, bire=0.0180.
 

Calculated Properties of Barysilite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.82 gm/cc
note: Specific Gravity of Barysilite =6.91 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.16
Boson Index = 0.84
Help on Photoelectric: Photoelectric: PEBarysilite =1,364.72 barns/electron
U=PEBarysilite x rElectron Density=7,937.06 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Barysilite is Not Radioactive
 

Barysilite Classification
Help on Dana Class: Dana Class: 55.02.03.01 (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.02)with cations in [6] coordination
  (55.02.03)Dana Group
 
55.02.03.01 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m
Help on Strunz Class: Strunz Class: 09.BC.20 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BC -Si2O7 groups, without non-tetrahedral anions;
 
09.BC.20 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m
 

Other Barysilite Information
Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana)
Help on See Also: See Also: Links to other databases for Barysilite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - Franklin Minerals(Palache)
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - MinMax(Deutsch)
13 - MinMax(English)
14 - Mineralienatlas (Deutsch)
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

Search for Barysilite using:

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

Visit our Advertisers for Barysilite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Barysilite Mineral Data :

Ask about Barysilite 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 Barysilite Specimen Label here :

Barysilite

Pb8Mn(Si2O7)3
Dana No: 55.02.03.01 Strunz No: 09.BC.20
Locality:

 

Notes: