Blodite Mineral Data

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


B and L Minerals
[New Items] [Specials] [Login] [Register] [Auction Items]
B & L Minerals, Fine Mineral specimens for sale for collectors of all levels


General Blodite Information

Help on Chemical Formula: Chemical Formula: Na2Mg(SO4)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 334.47 gm
   Sodium     13.75 %  Na   18.53 % Na2O
   Magnesium   7.27 %  Mg   12.05 % MgO
   Hydrogen    2.41 %  H    21.54 % H2O
   Sulfur     19.17 %  S    47.87 % SO3
   Oxygen     57.40 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Mg(SO4)2•4(H2O)
Help on Environment: Environment: Marine evaporite deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1821
Help on Locality: Locality: Ischel deposit in Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Carl August Bloede (1773-1820), German chemist.
Help on Name Pronunciation: Name Pronunciation: Blodite Say BLODITE
Help on Synonym: Synonym: Bloedite
  Zincblödite - name used for artificial compound.
 

Blodite Image

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

Blodite   Tamarugite

Comments: Clear, yellow blödite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Blodite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.3499:1:0.672
Help on Cell Dimensions: Cell Dimensions: a = 11.126, b = 8.242, c = 5.539, Z = 2; beta = 100.84° V = 498.87 Den(Calc)= 2.23
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.25(1), 3.29(0.95), 4.56(0.95),
Click Here for Large Blodite 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


Hawthorne F C , The Canadian Mineralogist , 23 (1985) p.669-674, Refinement of the crystal structure of bloedite: Structural similarities

 

Physical Properties of Blodite

Help on Color: Color: Colorless, Green, Yellow, Red.
Help on Density: Density: 2.23
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Compact - Occurs as a compact mass.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
 

Optical Properties of Blodite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2176,KPDmeas= 0.2176,KC= 0.2173
Ncalc = 1.48
Help on Optical Data: Optical Data: Biaxial (-), a=1.483, b=1.486, g=1.487, bire=0.0040, 2V(Calc)=58, 2V(Meas)=71. Dispersion relatively strong.
 

Calculated Properties of Blodite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.27 gm/cc
note: Specific Gravity of Blodite =2.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0089838563
Boson Index = 0.9910161437
Help on Photoelectric: Photoelectric: PEBlodite = 1.59 barns/electron
U=PEBlodite x rElectron Density= 3.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Blodite is Not Radioactive
 

Blodite Classification
Help on Dana Class: Dana Class: 29.03.03.01 (29)Hydrated Acid and Sulfates
  (29.03)where (A+)2 B (XO4)2 ˇ x(H2O)
  (29.03.03)Blodite Group
 
29.03.03.01 Blodite Na2Mg(SO4)2•4(H2O) P 21/a 2/m
 
29.03.03.02 Nickelblodite Na2(Ni,Mg)(SO4)2•4(H2O) P 21/a 2/m
 
29.03.03.03 Leonite K2Mg(SO4)2•4(H2O) C 2/m 2/m
 
29.03.03.04 Mereiterite! K2Fe(SO4)2•4(H2O) C 2/m 2/m
 
29.03.03.05 Changoite! Na2Zn(SO4)2•4(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 07.CC.50 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CC -With medium-sized and large cations
 
07.CC.50 Blodite Na2Mg(SO4)2•4(H2O) P 21/a 2/m
 
07.CC.50 Changoite! Na2Zn(SO4)2•4(H2O) P 21/a 2/m
 
07.CC.50 Nickelblodite Na2(Ni,Mg)(SO4)2•4(H2O) P 21/a 2/m
 

Other Blodite Information
Help on References: References: NAME( Dana8) 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 Blodite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

Search for Blodite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Blodite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Blodite Mineral Data :

Ask about Blodite 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 Espańol

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

Blodite

Na2Mg(SO4)2•4(H2O)
Dana No: 29.03.03.01 Strunz No: 07.CC.50
Locality:

 

Notes: