Norsethite Mineral Data

Norsethite Mineral Data
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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

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Norsethite

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 - TrapezohedralH-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),
Click Here for Large Norsethite Structure Window Crystal Structure:

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Lippmann F , Naturwissenschaften , 54 (1967) p.514-514, Die kristallstruktur des norsethit, BaMg(CO3)2,, im vergleich zum dolomit, CaMg(CO3)2

 

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: 14.02.02.01 (14)Anhydrous Carbonates
  (14.02)with Compound Formula A+ B++ (CO3)2
  (14.02.02)Norsethite Group
 
14.02.02.01 Norsethite BaMg(CO3)2 R 32 3 2
 
14.02.02.02 Paralstonite BaCa(CO3)2 P 321 3 2
 
14.02.02.03 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 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Norsethite

BaMg(CO3)2
Dana No: 14.02.02.01 Strunz No: 05.AB.30
Locality:

 

Notes: