Ankangite Mineral Data

Ankangite 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

[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

Exceptional Minerals

General Ankangite Information

Help on Chemical Formula: Chemical Formula: Ba(Ti,V+++,Cr+++)8O16
Help on Composition: Composition: Molecular Weight = 803.05 gm
   Barium    18.81 %  Ba   21.00 % BaO
   Titanium  32.79 %  Ti   54.71 % TiO2
   Vanadium  15.22 %  V    22.40 % V2O3
   Chromium   1.29 %  Cr    1.89 % Cr2O3
   Oxygen    31.88 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba1.1Ti5.5V3+2.4Cr0.2O16
Help on Environment: Environment: In a quartz vein.
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Shiti Barite deposit, Ankang County, Shaanxi Provice, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Ankangite + Pronunciation Say ANKANGITE
Help on Synonym: Synonym: ICSD 68631
  PDF 41-1427
 

Ankangite Image

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

Ankangite

Comments: Black prismatic ankangite inclusions in quartz.
Location: Curvelo region, Minas Gerais, Brazil. Scale: See Image.
© Rruff Database

Ankangite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.29204
Help on Cell Dimensions: Cell Dimensions: a = 10.139, c = 2.961, Z = 1; V = 304.39 Den(Calc)= 4.38
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.202(1), 1.589(0.7), 2.476(0.7),
Click Here for Large Ankangite 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


Shi-bin X , Hai-fu F , Xiao-jing W , Fang-hua L , Acta Crystallographica, Section A , 46 (1990) p.929-934, Direct methods in superspace. II The first application to an unknown, incommensurate modulated structure, Note: this is the average structure, isomorphous with hollandite, Note: y-coordinate of O2 altered from .248 to make regular TiO6 polyhedra, Locality: Shiti barite deposit, Ankang County, Shaanxi, China

 

Physical Properties of Ankangite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Density: Density: 4.44
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: grayish black
 

Optical Properties of Ankangite

Help on Dichroism (e): Dichroism (e): pinkish gray.
Help on Dichroism (w): Dichroism (w): light pink.
Help on Optical Data: Optical Data: Uniaxial (?).
  NCalc= 2.36 - from Gladstone-Dale relationship (KC = 0.3099) where Ncalc=Dcalc*KC+1
NCalc= 2.38 - from Gladstone-Dale relationship (KC = 0.3099) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Bireflectance: RL Bireflectance: Weak to distinct.
Help on RL Color: RL Color: Light rose-reddish gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Ankangite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 589 nm   12.80   20.10 
   
Calculated Relative Intensity Colors of Ankangite in Air
Relative
Intensity		    0%   70% 100% 140% 210% 280% 350% 420% 490% 560% 630% 690%
R1                        
R2                        
 

Calculated Properties of Ankangite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.04 gm/cc
note: Specific Gravity of Ankangite =4.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEAnkangite = 90.66 barns/electron
U=PEAnkangite x rElectron Density= 366.50 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ankangite is Not Radioactive
 

Ankangite Classification
Help on Dana Class: Dana Class: 07.09.04.02 (07)Multiple Oxides
  (07.09)Dana Type
  (07.09.04)Dana Group
 
07.09.04.01 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m
 
07.09.04.02 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m
Help on Strunz Class: Strunz Class: 04.DK.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DK -With large (± medium-sized) cations; tunnel structures
 
04.DK.05 Akaganeite Fe(O,OH,Cl) I2/m 2/m
 
04.DK.05 Ankangite Ba(Ti,V,Cr)8O16 I 4/m 4/m
 
04.DK.05 Coronadite Pb(Mn,Mn)8O16 I2/m 2/m
 
04.DK.05 Hollandite Ba(Mn,Mn)8O16 I2/m 2/m
 
04.DK.05 Manjiroite (Na,K)(Mn,Mn)8O16•n(H2O) I 4/m 4/m
 
04.DK.05 Mannardite BaTi6V2O16•(H2O) I 41/a 4/m
 
04.DK.05 Redledgeite BaTi6Cr2O16•(H2O) I 41/a 4/m
 
04.DK.05 Priderite (K,Ba)(Ti,Fe)8O16 I 4/m 4/m
 
04.DK.05 Henrymeyerite! BaFeTi7O16 I 4/m 4/m
 

Other Ankangite Information
Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Ankangite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Ankangite using:

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

Visit our Advertisers for Ankangite :

B and L Fine Minerals
Dakota Matrix Minerals
Dan & Diana Weinrich Mineral Auctions
Excalibur Mineral Corp.
Exceptional Minerals
John Betts Fine Minerals
Mineral News
Mineral of the Month Club
NY/NJ Gem & Mineral Show
TIMA Mineral Analyzer
Weinrich Minerals, Inc.
Wright's Rock Shop

Ask about Ankangite 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 Ankangite Specimen Label here :

Ankangite

Ba(Ti,V+++,Cr+++)8O16
Dana No: 07.09.04.02 Strunz No: 04.DK.05
Locality:

 

Notes: