Ferrogedrite  Mineral Data

Ferrogedrite Mineral Data

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

Advertisment
For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an
A Bijoux.com is an online store specialized in the sale on the internet of precious stones , gems , minerals and jewels for individuals and professionals
Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.
Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.

General Ferrogedrite Information

Help on Chemical  Formula: Chemical Formula: [ ]Fe++5Al2Si6Al2O22(OH)2
Help on Composition: Composition: Molecular Weight = 941.68 gm
   Aluminum  11.46 %  Al   21.66 % Al2O3
   Iron      29.65 %  Fe   38.15 % FeO
   Silicon   17.90 %  Si   38.28 % SiO2
   Hydrogen   0.21 %  H     1.91 % H2O
   Oxygen    40.78 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+5Al4Si6O22(OH)2
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and the original gederite location at Heas, Gedres, France.
Help on Name Pronunciation: Name Pronunciation: Ferrogedrite + Pronunciation Say FERROGEDRITE
 

Ferrogedrite Image

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

Ferrogedrite

Comments: Dark bluish green ferrogedrite grains, with minor matrix..
Location: Kawai mine, Ena City, Gifu Prefecture, Chubu Region, Honshu Island, Japan. Scale: Specimen Size 1.5 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrogedrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0317:1:0.2962
Help on Cell Dimensions: Cell Dimensions: a = 18.51, b = 17.94, c = 5.315, Z = 4; V = 1,764.95 Den(Calc)= 3.54
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.23(1), 3.04(0.7), 3.22(0.2),2.51(0.1), 2.58(0.1), 2.68(0.1), 4.63(0.1), 8.95(0.1),
 

Physical Properties of Ferrogedrite

Help on Cleavage: Cleavage: {110} Perfect, {010} Indistinct, {100} Indistinct
Help on Color: Color: Green, Brownish green, Brown, Greenish blue.
Help on Density: Density: 3.57
Help on Diaphaneity: Diaphaneity: Transparent to Subopaque
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: gray white
 

Optical Properties of Ferrogedrite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.061 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.192,KPDmeas= 0.1904,KC= 0.2027
Ncalc = 1.72
Help on Optical Data: Optical Data: Biaxial (-), a=1.642-1.694, b=1.649-1.71, g=1.661-1.722, bire=0.0190-0.0280, 2V(Calc)=76-80, 2V(Meas)=82.
 

Calculated Properties of Ferrogedrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.46 gm/cc
note: Specific Gravity of Ferrogedrite =3.54 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFerrogedrite = 9.86 barns/electron
U=PEFerrogedrite x rElectron Density= 34.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferrogedrite is Not Radioactive
 

Ferrogedrite Classification

Help on  Dana Class: Dana Class: 66.01.02.07 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.02)Dana Group
 
66.01.02.01 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.02 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.02a Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.03 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.03a Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.03b Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
66.01.02.04 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.04a Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.05 Magnesiogedrite? (Mg,Fe)5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.06 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.07 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.07a Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.08 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.09 Magnesioholmquistite Li2(Mg,Fe)3Al2Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.10 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
66.01.02.11 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family
 
09.DE.05 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m
 
09.DE.05 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m
 
09.DE.05 Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m
 
09.DE.05 Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m
 
09.DE.05 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m
 
09.DE.05 Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m
 
09.DE.05 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m
 
09.DE.05 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m
 

Other Ferrogedrite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Ferrogedrite :
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

Search for Ferrogedrite using:

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

Visit our Advertisers for Ferrogedrite :

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

Ask about Ferrogedrite 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 Ferrogedrite Specimen Label here :

Ferrogedrite

[ ]Fe++5Al2Si6Al2O22(OH)2
Dana No: 66.01.02.07 Strunz No: 09.DE.05
Locality:

 

Notes: