Loweite Mineral Data

Loweite Mineral Data +

[Express Minerals] [Minerals for Sale] [About Us] [En EspaÃƒï¿½Ã‚Â±ol] [Mineral Gallery]
Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996

General Loweite Information

Chemical Formula:

Na12Mg7(SO4)13·15(H2O)

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

Empirical Formula:

Na₁₂Mg₇(SO₄)₁₃·15(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1847

Locality:

Link to MinDat.org Location Data.

Synonym:

Loeweite

Loweite Image

Images:

Loweite

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

Loweite Crystallography

Axial Ratios:

a:c = 1:0.71207

Cell Dimensions:

a = 18.866, c = 13.434, Z = 3; V = 4,140.91 Den(Calc)= 2.36

Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.17(1), 4.04(0.95), 4.29(0.95),

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

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

Color:

Colorless, Gray, Pale yellow, Reddish yellow.

Density:

2.36 - 2.38, Average = 2.37

Diaphaniety:

Transparent

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Vitreous (Glassy)

Optical Properties of Loweite

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

Optical Data:

Uniaxial (-), e=1.471, w=1.49, bire=0.0190.

Calculated Properties of Loweite

Electron Density:

r_electron=2.38 gm/cc
note: r_Loweite=2.36 gm/cc.

Fermion Index

Fermion Index = 0.01051
Boson Index = 0.98949

Photoelectric:

PE_Loweite= 1.73 barns/electron
U=PE_Loweite x r_electron= 4.11 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Loweite is Not Radioactive

Loweite Classification

Dana Class:

29.4.3.1 (29)Hydrated Acid and Sulfates

(29.4)where (A+)2 Bn (XO4)p · x(H2O)

(29.4.3)Dana Group

29.4.3.1 Loweite Na12Mg7(SO4)13·15(H2O) R 3 3

Strunz Class:

VI/C.17-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium and very big size

VI/C.17 - Löweite series

VI/C.17-10 Loweite Na12Mg7(SO4)13·15(H2O) R 3 3

Other Loweite Information

References:

NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Loweite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Loweite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Loweite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Loweite Mineral Data :

Ask about Loweite 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 Español

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

Loweite

Na12Mg7(SO4)13·15(H2O)
Dana No: 29.4.3.1 Strunz No: VI/C.17-10
Locality:

Notes: