Mineralogy Database

Norsethite Mineral Data

Search Webmineral :

General Norsethite Information

Help on Chemical  Formula: Chemical Formula: BaMg(CO3)2
Help on Composition: Composition: Molecular Weight = 281.65 gm
   Barium     48.76 %  Ba   54.44 % BaO
   Magnesium   8.63 %  Mg   14.31 % MgO
   Carbon      8.53 %  C    31.25 % CO2
   Oxygen     34.08 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaMg(CO3)2
Help on Environment: Environment: Authigenic mineral in and underlying the Green River Formation
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Westvaco trona mine, about 30 km west of Green River, Sweetwater Co., Wyoming, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Keith Norseth (1927-1991), American engineering geologist, Westvaco trona mine, Wyoming, USA,
Help on Name Pronunciation: Name Pronunciation: Norsethite + Pronunciation Say NORSETHITE
Help on Synonym: Synonym: ICSD 24435
  PDF 12-530

Norsethite Image

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


Comments: B&W RL image of interlocking norsethite (light-grey, stained) and calcite (dark-grey, etched). Etched with sodium rhodizonate solution. (AmMin, v52:1770).
Location: Discoveredz inc-lead-coppedr eposita t Rosh Pinah, situated about 100 miles south-east of Aus in South West Africa. Scale: Magnification 85 X.
© American Mineralogist

Norsethite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.33665
Help on Cell Dimensions: Cell Dimensions: a = 5.02, c = 16.75, Z = 3; V = 365.56 Den(Calc)= 3.84
Help on Crystal System: Crystal System: Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: R 32
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.015(1), 2.656(0.35), 3.86(0.35),

Physical Properties of Norsethite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.837
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Hackly - Jagged, torn surfaces, (e.g. fractured metals).
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Norsethite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1579,KPDmeas= 0.1581,KC= 0.1642
Ncalc = 1.63
Help on Optical Data: Optical Data: Uniaxial (-), e=1.519, w=1.694, bire=0.1750.

Calculated Properties of Norsethite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Norsethite =3.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PENorsethite = 215.34 barns/electron
U=PENorsethite x rElectron Density= 751.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Norsethite is Not Radioactive

Norsethite Classification

Help on  Dana Class: Dana Class: (14)Anhydrous Carbonates
  (14.02)with Compound Formula A+ B++ (CO3)2
  (14.02.02)Norsethite Group Norsethite BaMg(CO3)2 R 32 3 2 Paralstonite BaCa(CO3)2 P 321 3 2 Olekminskite Sr(Sr,Ca,Ba)(CO3)2 P 321 3 2
Help on  Strunz Class: Strunz Class: 05.AB.30 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AB -Alkali-earth (and other M2+) carbonates
05.AB.30 Norsethite BaMg(CO3)2 R 32 3 2

Other Norsethite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Norsethite :
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 Norsethite using:

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

Visit our Advertisers for Norsethite :

Ask about Norsethite 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 Norsethite Specimen Label here :


Dana No: Strunz No: 05.AB.30





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.