Taenite  Mineral Data

Taenite Mineral Data

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General Taenite Information

Help on Chemical  Formula: Chemical Formula: gamma-(Fe,Ni)
Help on Composition: Composition: Molecular Weight = 56.42 gm
   Iron    79.19 %  Fe
   Nickel  20.81 %  Ni
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: Fe0+0.8Ni0.2
Help on Environment: Environment: Primarily found in meteorites. Resistant to acid etch where it stands out in patterns.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1861
Help on Locality: Locality: Gorge River, South Island, New Zealand Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "band" in allusion to the flattened form.
Help on Name Pronunciation: Name Pronunciation: Taenite Say TAENITE
Help on Synonym: Synonym: Antitaenite
  Plessite - Taenite and Kamacite
 

Taenite Image

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Taenite   Troilite   Cohenite   Kamacite

Comments: Brown masses of troilite, with white cohenite, in kamacite/taenite matrix, in meteorite (polished section).
Location: Meteor Crater, Canyon Diablo, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Taenite   Kamacite   Troilite

Comments: Polished and acid etched slice, with crust, illustrating Widmanstaaten lines, with taenite darker areas between kamacite crystals, with tarnished troilite inclusions, in fine octahedrite meteorite.
Location: Gibeon Meteorite, found 1836, Great Namaqualand, Hardap, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Taenite

Comments: Massive taenite, altering, intermixed with kamacite, in meteorite.
Location: Agtalilik Meteorite, Melville Bay, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taenite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.596, Z = 4; V = 46.50 Den(Calc)= 8.06
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.08(1), 1.08(0.8), 1.8(0.8),1.04(0.5), 1.27(0.5), 0.9(0.3),
 

Physical Properties of Taenite

Help on Cleavage: Cleavage: None
Help on Color: Color: Grayish white, Silver white.
Help on Density: Density: 7.8 - 8.22, Average = 8.01
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Malleable - Deforms rather than breaking apart with a hammer.
Help on Habit: Habit: Exsolution Inclusions - Formed by the exsolution of a separate mineral from the parent mineral caused by a temperature drop.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Magnetic
Help on Streak: Streak: light gray
 

Calculated Properties of Taenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.54 gm/cc
note: Specific Gravity of Taenite =8.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PETaenite = 33.05 barns/electron
U=PETaenite x rElectron Density= 249.29 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Taenite is Not Radioactive
 

Taenite Classification

Help on  Dana Class: Dana Class: 01.01.11.02 (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.11)Iron-Nickel group
 
01.01.11.00 Iron! Fe I m3m 4/m 3 2/m
 
01.01.11.01 Kamacite? alpha-(Fe,Ni) F m3m 4/m 3 2/m
 
01.01.11.02 Taenite gamma-(Fe,Ni) F m3m 4/m 3 2/m
 
01.01.11.03 Tetrataenite FeNi P 4/mmm 4/m 2/m 2/m
 
01.01.11.04 Awaruite Ni2FetoNi3Fe P m3m 4/m 3 2/m
 
01.01.11.05 Nickel Ni F m3m 4/m 3 2/m
 
01.01.11.06 Wairauite CoFe P m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.AE.10 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AE -Iron-chromium family
 
01.AE.10 Antitaenite* gamma-Fe3Ni Unk Cubic
 
01.AE.10 Taenite gamma-(Fe,Ni) F m3m 4/m 3 2/m
 
01.AE.10 Tetrataenite FeNi P 4/mmm 4/m 2/m 2/m
 

Other Taenite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Taenite :
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 - Meteorite Minerals
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Ask about Taenite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Taenite Specimen Label here :

Taenite

gamma-(Fe,Ni)
Dana No: 01.01.11.02 Strunz No: 01.AE.10
Locality:

 

Notes: