Mineralogy Database

Gottlobite Mineral Data

Search Webmineral :
  
Advertisment

General Gottlobite Information

Help on Chemical  Formula: Chemical Formula: CaMg(VO4,AsO4)(OH)
Help on Composition: Composition: Molecular Weight = 205.20 gm
   Calcium    19.53 %  Ca   27.33 % CaO
   Magnesium  11.84 %  Mg   19.64 % MgO
   Vanadium   15.64 %  V    27.92 % V2O5
   Arsenic    13.51 %  As   20.72 % As2O5
   Hydrogen    0.49 %  H     4.39 % H2O
   Oxygen     38.98 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMg(VO4)0.63(AsO4)0.37(OH)
Help on Environment: Environment: In dump material of hydrothermal barite veins in Fe-Mn ore. A member of the descloizite group
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Long abandoned Glucksstern Mine at Gottlob hill, Friedrichroda, Thuringia, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Synonym: Synonym: IMA1998-066
 

Gottlobite Image

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

  Gottlobite

Comments: Orange-brownish tabular crystals of gottlobite with black hausmannite and colorless barite.
Location: Gl├╝cksstern Mine, Gottlob Hill, Friedrichroda, Thuringian Forest, Thuringia, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Gottlobite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8325:1:0.6593
Help on Cell Dimensions: Cell Dimensions: a = 7.501, b = 9.01, c = 5.941, Z = 4; V = 401.52 Den(Calc)= 3.39
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.17(1), 4.496(0.72), 1.614(0.41),4.139(0.32), 2.523(0.3), 2.785(0.3), 2.639(0.27), 2.596(0.21), 1.733(0.2),
 

Physical Properties of Gottlobite

Help on Cleavage: Cleavage: None
Help on Color: Color: Orange, Brown orange.
Help on Density: Density: 3.41 - 3.58, Average = 3.49
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Irregular - Irregular fracture producing small, conchoidal fragments.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light brown
 

Optical Properties of Gottlobite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2394,KPDmeas= 0.2322,KC= 0.2401
Ncalc = 1.81 - 1.86
Help on Optical Data: Optical Data: Biaxial (?), a=1.797, b=1.805-1.815, g=1.828, bire=0.0310, 2V(Calc)=62-80, 2V(Meas)=very large. Dispersion r > v medium.
 

Calculated Properties of Gottlobite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.29 gm/cc
note: Specific Gravity of Gottlobite =3.39 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEGottlobite = 14.70 barns/electron
U=PEGottlobite x rElectron Density= 48.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gottlobite is Not Radioactive
 

Gottlobite Classification

Help on  Dana Class: Dana Class: 41.05.01.10 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.05)where (A B)2 (XO4) Zq
  (41.05.01)Adelite Group
 
41.05.01.01 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
41.05.01.03 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
41.05.01.04 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2
 
41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
41.05.01.06 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
41.05.01.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
 
08.BH.35 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
08.BH.35 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
 

Other Gottlobite Information

Help on References: References: NAME( AmMin, vol 86, p 767) PHYS. PROP.(AmMin, vol 86, p 767) OPTIC PROP.(AmMin, vol 86, p 767)
Help on See Also: See Also: Links to other databases for Gottlobite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Gottlobite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Gottlobite :

Ask about Gottlobite 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 Espa˝ol

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

Gottlobite

CaMg(VO4,AsO4)(OH)
Dana No: 41.05.01.10 Strunz No: 08.BH.35
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.