Deerite Mineral Data

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



[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop


General Deerite Information

Help on Chemical Formula: Chemical Formula: (Fe++,Mn)6(Fe+++,Al)3Si6O20(OH)5
Help on Composition: Composition: Molecular Weight = 1,052.69 gm
   Manganese  10.44 %  Mn   13.48 % MnO
   Aluminum    1.92 %  Al    3.63 % Al2O3
   Iron       33.16 %  Fe   27.30 % FeO / 17.07 % Fe2O3
   Silicon    16.01 %  Si   34.25 % SiO2
   Hydrogen    0.48 %  H     4.28 % H2O
   Oxygen     38.00 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+4Mn2+2Fe3+2.25Al0.75Si6O20(OH)5
Help on Environment: Environment: In meta-ironstones and Cu-Fe sulfide deposits, in blueschist facies metasediments formed at high pressure and low temperature.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Laytonville quarry, 5 miles south of Laytonville, Mendocino Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Alexander Deer (1910- ), mineralogist-petrologist, Cambridge University, Cambridge, England.
Help on Name Pronunciation: Name Pronunciation: Deerite Say DEERITE
Help on Synonym: Synonym: ICSD 10421
  PDF 19-421
 

Deerite Image

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

Deerite

Comments: Black bladed deerite crystals embedded in quartz and fibrous riebeckite.
Location: Laytonville quarry, Laytonville, Mendocino County, California, USA. Scale: See Image.
© Rruff Database

Deerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5712:1:0.5065
Help on Cell Dimensions: Cell Dimensions: a = 10.786, b = 18.88, c = 9.564, Z = 4; beta = 107.45° V = 1,857.98 Den(Calc)= 3.76
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.03(1), 3.01(0.7), 2.64(0.55),
Click Here for Large Deerite 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


Fleet M E , American Mineralogist , 62 (1977) p.990-998, The crystal structure of deerite, Note: sample is from a riebeckite-deerite-garnet schist, near Panoche, San Benito County, California, USA

 

Physical Properties of Deerite

Help on Cleavage: Cleavage: {110} Good
Help on Color: Color: Black.
Help on Density: Density: 3.837
Help on Diaphaneity: Diaphaneity: Transparent to Subopaque
Help on Hardness: Hardness: 6 - Orthoclase
Help on Streak: Streak: black gray
 

Optical Properties of Deerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2274,KPDmeas= 0.2228,KC= 0.2249
Ncalc = 1.85 - 1.86
Help on Optical Data: Optical Data: Biaxial (?), a=1.84, g=1.87, bire=0.0300
 

Calculated Properties of Deerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.73 gm/cc
note: Specific Gravity of Deerite =3.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEDeerite = 13.27 barns/electron
U=PEDeerite x rElectron Density= 49.46 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Deerite is Not Radioactive
 

Deerite Classification
Help on Dana Class: Dana Class: 69.02.03.03 (69)Inosilicate Chains with Side Branches or Loops
  (69.02)with P>2
  (69.02.03)Howieite group
 
69.02.03.01 Howieite Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13 P1,P1 Tri
 
69.02.03.02 Taneyamalite (Na,Ca)(Mn,Mg)12[(Si,Al)6O17]2(O,OH)10 P1 1
 
69.02.03.03 Deerite (Fe,Mn)6(Fe,Al)3Si6O20(OH)5 P 21/a 2/m
Help on Strunz Class: Strunz Class: 09.DH.60 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DH -Inosilicates with 4-periodic single chains, Si4O12
 
09.DH.60 Deerite (Fe,Mn)6(Fe,Al)3Si6O20(OH)5 P 21/a 2/m
 

Other Deerite 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 Deerite :
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

Search for Deerite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Deerite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Deerite Mineral Data :

Ask about Deerite 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 Deerite Specimen Label here :

Deerite

(Fe++,Mn)6(Fe+++,Al)3Si6O20(OH)5
Dana No: 69.02.03.03 Strunz No: 09.DH.60
Locality:

 

Notes: