Metahewettite Mineral Data

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


General Metahewettite Information

Help on Chemical Formula: Chemical Formula: CaV6O16•3(H2O)
Help on Composition: Composition: Molecular Weight = 655.76 gm
   Calcium    6.11 %  Ca    8.55 % CaO
   Vanadium  46.61 %  V    83.21 % V2O5
   Hydrogen   0.92 %  H     8.24 % H2O
   Oxygen    46.36 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaV5+6O16•3(H2O)
Help on Environment: Environment: Uranium-Vanadium sandstone deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1914
Help on Locality: Locality: Minasragra, Peru. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its lower hydrate relationship to hewettite.
Help on Name Pronunciation: Name Pronunciation: Metahewettite + Pronunciation Say METAHEWETTITE
 

Metahewettite Image

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

Metahewettite

Comments: Deep red, vibrant, radial micro crystals of metahewettite to 3mm in diameter on matrix.
Location: Cactus Rat mine, Grand County, Utah. Scale: 4 x 4 x 2 cm.
© John Veevaert

Metahewettite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =3.3684:1:5.1122
Help on Cell Dimensions: Cell Dimensions: a = 12.15, b = 3.607, c = 18.44, Z = 2; beta = 118.03° V = 713.34 Den(Calc)= 3.05
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/m
Click Here for Large Metahewettite 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


Bachmann H G , Barnes W H , The Canadian Mineralogist , 7 (1962) p.219-235, The crystal structure of a sodium-calcium variety of metahewettite, Sample: anhydrous

View Additional jPOWD Structure files for Metahewettite
[1]
 

Physical Properties of Metahewettite

Help on Color: Color: Red.
Help on Density: Density: 2.5
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Silky
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: brownish red
 

Optical Properties of Metahewettite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.228 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3311,KPDmeas= 0.404,KC= 0.3289
Ncalc = 1.82 - 2
Help on Optical Data: Optical Data: Biaxial (-), a=1.7, b=2.1, g=2.23, bire=0.5300
 

Calculated Properties of Metahewettite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.94 gm/cc
note: Specific Gravity of Metahewettite =3.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014716431
Boson Index = 0.9985283569
Help on Photoelectric: Photoelectric: PEMetahewettite = 9.69 barns/electron
U=PEMetahewettite x rElectron Density= 28.50 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Metahewettite is Not Radioactive
 

Metahewettite Classification
Help on Dana Class: Dana Class: 47.03.01.02 (47)Vanadium Oxysalts
  (47.03)(Hydrated)
  (47.03.01)Hewettite Group
 
47.03.01.01 Hewettite CaV6O16•9(H2O) P 2/m 2/m
 
47.03.01.02 Metahewettite CaV6O16•3(H2O) A2/m 2/m
 
47.03.01.03 Barnesite Na2V6O16•3(H2O) P 2/m 2/m
 
47.03.01.04 Hendersonite Ca1.3V6O16•6(H2O) Pnam 2/m 2/m 2/m
 
47.03.01.05 Grantsite Na4CaxV2xV12-2xO32•8(H2O) C 2/m 2/m
Help on Strunz Class: Strunz Class: 04.HE.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HE -Phyllovanadates
 
04.HE.15 Hewettite CaV6O16•9(H2O) P 2/m 2/m
 
04.HE.15 Metahewettite CaV6O16•3(H2O) A2/m 2/m
 

Other Metahewettite Information
Help on References: References: 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 Metahewettite :
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 Metahewettite using:

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

Visit our Advertisers for Metahewettite :

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

Ask about Metahewettite 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 Metahewettite Specimen Label here :

Metahewettite

CaV6O16•3(H2O)
Dana No: 47.03.01.02 Strunz No: 04.HE.15
Locality:

 

Notes: