Obradovicite Mineral Data

Obradovicite 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
[Current Minerals] [Order Status] [Policies] [e-Bay Items]
B & L Minerals, Fine Mineral specimens for sale for collectors of all levels


General Obradovicite Information

Help on Chemical Formula: Chemical Formula: H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5•12(H2O)
Help on Composition: Composition: Molecular Weight = 1,257.18 gm
   Potassium    2.18 %  K     2.62 % K2O
   Sodium       0.37 %  Na    0.49 % Na2O
   Iron         0.80 %  Fe    1.14 % Fe2O3
   Copper       5.05 %  Cu    5.69 % Cu2O
   Molybdenum  38.16 %  Mo   57.25 % MoO3
   Arsenic      5.96 %  As    9.14 % As2O5
   Hydrogen     2.18 %  H    19.49 % H2O
   Oxygen      45.31 %  O
              ______        ______ 
              100.00 %       95.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: H4K0.7Na0.2CuFe3+0.18(AsO4)(MoO4)5•11.6(H2O)
Help on Environment: Environment: Secondary mineral in the oxidized zone of a Cu-Mo deposit.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Chuquicamata, Antofagasta, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Martin T. Obradovic, who provided the type material.
Help on Name Pronunciation: Name Pronunciation: Obradovicite + Pronunciation Say OBRADOVICITE
 

Obradovicite Image

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

Obradovicite

Comments: Brownish yellow obradovicite coatings on quartz.
Location: Chuquicamata, Antofagasta, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Obradovicite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0375:1:0.7446
Help on Cell Dimensions: Cell Dimensions: a = 15.406, b = 14.848, c = 11.056, Z = 4; V = 2,529.04 Den(Calc)= 3.30
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.906(1), 7.424(0.8), 10.565(0.8),
 

Physical Properties of Obradovicite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pea green.
Help on Density: Density: 3.55
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Streak: Streak: light green
 

Optical Properties of Obradovicite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.06 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2423,KPDmeas= 0.2253,KC= 0.2397
Ncalc = 1.79 - 1.85
Help on Optical Data: Optical Data: Biaxial (+), a=1.79, b=1.798, g=1.811, bire=0.0210, 2V(Calc)=78, 2V(Meas)=81. Dispersion extreme.
Help on Pleochroism (x): Pleochroism (x): weak yellow.
Help on Pleochroism (y): Pleochroism (y): weaker yellow.
Help on Pleochroism (z): Pleochroism (z): weak yellow.
 

Calculated Properties of Obradovicite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.17 gm/cc
note: Specific Gravity of Obradovicite =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEObradovicite = 67.51 barns/electron
U=PEObradovicite x relectron= 214.14 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 30.21 (Gamma Ray American Petroleum Institute Units)
Concentration of Obradovicite per GRapi unit = 3.31 (%)

Estimated Radioactivity from Obradovicite - barely detectable

 

Obradovicite Classification
Help on Dana Class: Dana Class: 49.04.02.01 (49)Basic and Hydrated Molybdates and Tungstates
  (49.04)(Compound Anions)
  (49.04.02)Dana Group
 
49.04.02.01 Obradovicite H4(K,Na)CuFe2(AsO4)(MoO4)5•12(H2O) Pcnm 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 07.GB.40 07 - SULFATES (SELENATES, TELLURATES)
  07.G - Molybdates, Wolframates and Niobates
  07.GB -With additional anions and/or H2O
 
07.GB.40 Obradovicite H4(K,Na)CuFe2(AsO4)(MoO4)5•12(H2O) Pcnm 2/m 2/m 2/m
 

Other Obradovicite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4)
Help on See Also: See Also: Links to other databases for Obradovicite :
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

Search for Obradovicite using:

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

Visit our Advertisers for Obradovicite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

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 Obradovicite Mineral Data :

Ask about Obradovicite 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 Obradovicite Specimen Label here :

Obradovicite

H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5•12(H2O)
Dana No: 49.04.02.01 Strunz No: 07.GB.40
Locality:

 

Notes: