Dashkovaite Mineral Data

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


Crystalarium.com
[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page]
Shop early for Holiday Season and get the best stuff.
You can put it on layaway for up to six weeks!


General Dashkovaite Information

Help on Chemical Formula: Chemical Formula: Mg(HCOO)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 172.49 gm
   Magnesium  14.09 %  Mg
   Hydrogen    3.33 %  H
   Carbon     27.85 %  C
   Oxygen     54.73 %  O
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: MgH5.72(C2)O5.9
Help on Environment: Environment: Found in dolomite marble core. Second natural formate.
Help on IMA Status: IMA Status: Approved IMA 2000 (Dana # Added)
Help on Locality: Locality: Korshunovskoye boron deposit in the Irkutsk district, Siberia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for E. R. Dashkova (1744-1796), former director of the Saint Petersburg Academy of Sciences.
Help on Synonym: Synonym: IMA2000-006
 

Dashkovaite Image

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

Dashkovaite

Comments: White fibrous dashkovaite.
Location: Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: Picture size 2.3 mm.
© Thomas Witzke / Abraxas-Verlag

Dashkovaite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.2083:1:1.3118
Help on Cell Dimensions: Cell Dimensions: a = 8.64, b = 7.15, c = 9.38, Z = 4; beta = 98° V = 573.82 Den(Calc)= 2.00
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.4(1)(112), 4.9(0.9)(111), 3.68(0.8)(210),4.3(0.7)(200), 4.64(0.7)(002), 2.87(0.4), 3.05(0.4),
Click Here for Large Dashkovaite 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


Osaki K , Nakai Y , Watanabe T , Journal of the Physical Society of Japan , 19 (1964) p.717-723, The crystal structure of magnesium formate dihydrate and manganous formate, dihydrate, Locality: synthetic

 

Physical Properties of Dashkovaite

Help on Color: Color: White.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Dashkovaite

Help on Optical Data: Optical Data: Biaxial (+), a=1.465, b=1.486, g=1.516, bire=0.0510
 

Calculated Properties of Dashkovaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.06 gm/cc
note: Specific Gravity of Dashkovaite =2.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEDashkovaite = 0.54 barns/electron
U=PEDashkovaite x rElectron Density= 1.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dashkovaite is Not Radioactive
 

Dashkovaite Classification
Help on Dana Class: Dana Class: 50.02.06.02 (50)Salts of Organic Acids
  (50.02)(Mellitates, Citrates, Cyanates, and Acetates)
  (50.02.06)Formicaite Series
 
50.02.06.01 Formicaite! Ca(HCOO)2 P 41212 4 2 2
 
50.02.06.02 Dashkovaite! Mg(HCOO)2•2(H2O) P 21/c 2/m
Help on Strunz Class: Strunz Class: 10.AA.10 10 - ORGANIC COMPOUNDS
  10.A - Salts of Organic Acids
  10.AA -Formates, Acetates, etc.
 
10.AA.10 Dashkovaite! Mg(HCOO)2•2(H2O) P 21/c 2/m
 

Other Dashkovaite Information
Help on References: References: NAME( AmMin, Vol 86, p 1534) PHYS. PROP.(AmMin, Vol 86, p 1534) OPTIC PROP.(AmMin, Vol 86, p 1534)
Help on See Also: See Also: Links to other databases for Dashkovaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (MinSocAm)
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Dashkovaite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Dashkovaite :

AA Mineral Specimens

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Dashkovaite Mineral Data :

Ask about Dashkovaite 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 Dashkovaite Specimen Label here :

Dashkovaite

Mg(HCOO)2•2(H2O)
Dana No: 50.02.06.02 Strunz No: 10.AA.10
Locality:

 

Notes: