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Neustadtelite Mineral Data

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General Neustadtelite Information

Help on Chemical  Formula: Chemical Formula: Bi2Fe+++(Fe+++,Co)(O,OH)2(OH)2(AsO4)2
Help on Composition: Composition: Molecular Weight = 870.06 gm
   Iron       9.63 %  Fe   13.77 % Fe2O3
   Cobalt     2.71 %  Co    3.81 % Co2O3
   Bismuth   48.04 %  Bi   53.55 % Bi2O3
   Arsenic   17.22 %  As   26.42 % As2O5
   Hydrogen   0.34 %  H     3.00 % H2O
   Oxygen    22.07 %  O
            ______        ______ 
            100.00 %      100.55 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi2Fe3+1.5Co0.4O1.1(OH)2.9(AsO4)2
Help on Environment: Environment: Small vugs in coarse quartz crystals. Fe dominant analog of medenbachite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Mine dumps in the Schneeberg-Neust�dtel area, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Synonym: Synonym: IMA1998-016

Neustadtelite Image

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Comments: Scanning electron microscope micrograph of neustadtelite. (AmMin 87:728).
Location: Mine dumps of the Güldener Falk mine near Schneeberg-Neustädtel, Saxony, Germany. Scale: Scale Bar 15 µm.
© American Mineralogist

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Comments: Small brown crystals of neustadtelite in matrix.
Location: Sauschwart mine, Schneeberg, Erzgebirge, Saxony, Germany. Scale: Picture Size 1.5 mm.
© Thomas Witzke

Neustadtelite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7404:1:1.4646
Help on Cell Dimensions: Cell Dimensions: a = 4.551, b = 6.146, c = 9.002, Z = 1; alpha = 95.41°, beta = 99.28°, gamma = 92.89° V = 247.07 Den(Calc)= 5.85
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.913(1)(102), 3.539(1)(111), 3.767(0.9)(012),3.492(0.87)(111), 8.819(0.67)(001), 2.798(0.48021)(021), 2.574(0.43)(013),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 5 3) ( 1 0 1) ( 0 0 1)

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Physical Properties of Neustadtelite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Brown.
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle 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: Adamantine
Help on Streak: Streak: light brown

Optical Properties of Neustadtelite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.039 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1835,KC= 0.1908
Ncalc = 2.12
Help on Optical Data: Optical Data: Biaxial (-), a=2.02, b=2.08, g=2.12, bire=0.1000

Calculated Properties of Neustadtelite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.12 gm/cc
note: Specific Gravity of Neustadtelite =5.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0021480585
Boson Index = 0.9978519415
Help on Photoelectric: Photoelectric: PENeustadtelite = 900.37 barns/electron
U=PENeustadtelite x rElectron Density=4,609.34 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Neustadtelite is Not Radioactive

Neustadtelite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.04)where (A B)5 (XO4)2 Zq
  (41.04.09)Medenbachite Group Medenbachite! Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2 P1 1 Neustadtelite! Bi2Fe(Fe,Co)(O,OH)2(OH)2(AsO4)2 P1 1 Cobaltneustadtelite! Bi2Fe(Co,Fe)(O,OH)2(OH)2(AsO4)2 P1 1
Help on  Strunz Class: Strunz Class: 08.BK.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BK -With medium-sized and large cations, (OH, etc.)
08.BK.10 Medenbachite! Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2 P1 1
08.BK.10 Cobaltneustadtelite! Bi2Fe(Co,Fe)(O,OH)2(OH)2(AsO4)2 P1 1
08.BK.10 Neustadtelite! Bi2Fe(Fe,Co)(O,OH)2(OH)2(AsO4)2 P1 1

Other Neustadtelite Information

Help on References: References: NAME( AmMin, Vol 87, p 726) PHYS. PROP.(AmMin, Vol 87, p 726) OPTIC PROP.(AmMin, Vol 87, p 726)
Help on See Also: See Also: Links to other databases for Neustadtelite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 08.BK.10





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