Loweite Mineral Data

Loweite Mineral Data
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General Loweite Information

Help on Chemical Formula: Chemical Formula: Na12Mg7(SO4)13•15(H2O)
Help on Composition: Composition: Molecular Weight = 1,965.07 gm
   Sodium     14.04 %  Na   18.92 % Na2O
   Magnesium   8.66 %  Mg   14.36 % MgO
   Hydrogen    1.54 %  H    13.75 % H2O
   Sulfur     21.21 %  S    52.97 % SO3
   Oxygen     54.55 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na12Mg7(SO4)13•15(H2O)
Help on Environment: Environment: Uncommon mineral in marine salt deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1847
Help on Locality: Locality: Ischl, Hallstatt, and Hall, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Alexander Lowe (1808-1895), Austrian chemist, Chief Assayer at the Mint, Vienna, Austria.
Help on Name Pronunciation: Name Pronunciation: Loweite Say LOWEITE
Help on Synonym: Synonym: Loeweite
 

Loweite Image

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Loweite

Comments: Opaque white crystalline löweite with clear colorless halite.
Location: Wilhelmshall, near Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Loweite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.71207
Help on Cell Dimensions: Cell Dimensions: a = 18.866, c = 13.434, Z = 3; V = 4,140.91 Den(Calc)= 2.36
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.17(1), 4.04(0.95), 4.29(0.95),
Click Here for Large Loweite Structure Window Crystal Structure:

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Fang J H , Robinson P D , American Mineralogist , 55 (1970) p.378-386, Crystal structures and mineral chemistry of double-salt hydrates: II. The, crystal structure of loeweite

 

Physical Properties of Loweite

Help on Color: Color: Colorless, Gray, Pale yellow, Reddish yellow.
Help on Density: Density: 2.36 - 2.38, Average = 2.37
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Loweite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2036,KPDmeas= 0.2027,KC= 0.2052
Ncalc = 1.48 - 1.49
Help on Optical Data: Optical Data: Uniaxial (-), e=1.471, w=1.49, bire=0.0190.
 

Calculated Properties of Loweite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.38 gm/cc
note: Specific Gravity of Loweite =2.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PELoweite = 1.73 barns/electron
U=PELoweite x rElectron Density= 4.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Loweite is Not Radioactive
 

Loweite Classification
Help on Dana Class: Dana Class: 29.04.03.01 (29)Hydrated Acid and Sulfates
  (29.04)where (A+)2 Bn (XO4)p · x(H2O)
  (29.04.03)Dana Group
 
29.04.03.01 Loweite Na12Mg7(SO4)13•15(H2O) R 3 3
Help on Strunz Class: Strunz Class: 07.CC.45 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CC -With medium-sized and large cations
 
07.CC.45 Loweite Na12Mg7(SO4)13•15(H2O) R 3 3
 

Other Loweite Information
Help on References: References: NAME( AntBidBlaNic5) 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 Loweite :
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

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Ask about Loweite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Loweite Specimen Label here :

Loweite

Na12Mg7(SO4)13•15(H2O)
Dana No: 29.04.03.01 Strunz No: 07.CC.45
Locality:

 

Notes: