Mineralogy Database

Amakinite Mineral Data

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General Amakinite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mg)(OH)2
Help on Composition: Composition: Molecular Weight = 83.46 gm
   Magnesium   5.82 %  Mg    9.66 % MgO
   Manganese   6.58 %  Mn    8.50 % MnO
   Iron       46.84 %  Fe   60.26 % FeO
   Hydrogen    2.42 %  H    21.58 % H2O
   Oxygen     38.34 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.7Mg0.2Mn2+0.1(OH)2
Help on Environment: Environment: Noted in a drill core as thin veins and pockets in kimberlite.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Lucky Eastern kimberlite pipe, [Udachnaya pipe, Daldyn-Alakit region, Yakutia], Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Amakin Expedition, which prospected the Yakutain diamond deposits.
Help on Name Pronunciation: Name Pronunciation: Amakinite + Pronunciation Say AMAKINITE
 

Amakinite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.09917
Help on Cell Dimensions: Cell Dimensions: a = 6.917, c = 14.52, Z = 12; V = 601.63 Den(Calc)= 2.76
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.3(1), 1.728(0.9), 2.8(0.8),
 

Physical Properties of Amakinite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Yellow green, Light green.
Help on Density: Density: 2.925 - 2.98, Average = 2.95
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Pearly
Help on Magnetism: Magnetism: Weakly magnetic
 

Optical Properties of Amakinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.162 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2589,KPDmeas= 0.242,KC= 0.2227
Ncalc = 1.61 - 1.66
Help on Optical Data: Optical Data: Uniaxial (+), w=1.707, e=1.722, bire=0.0150.
 

Calculated Properties of Amakinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Amakinite =2.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAmakinite = 15.67 barns/electron
U=PEAmakinite x rElectron Density= 45.56 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Amakinite is Not Radioactive
 

Amakinite Classification

Help on  Dana Class: Dana Class: 06.02.01.02 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.02)where X++ (OH)2
  (06.02.01)Brucite group (Rhombohedral: P-3m1)
 
06.02.01.01 Brucite Mg(OH)2 P 3m1 3 2/m
 
06.02.01.02 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m
 
06.02.01.03 Pyrochroite Mn(OH)2 P 3m1 3 2/m
 
06.02.01.04 Portlandite Ca(OH)2 P 3m1 3 2/m
 
06.02.01.05 Theophrastite Ni(OH)2 P 3m1 3 2/m
Help on  Strunz Class: Strunz Class: 04.FE.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
 
04.FE.05 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m
 
04.FE.05 Brucite Mg(OH)2 P 3m1 3 2/m
 
04.FE.05 Portlandite Ca(OH)2 P 3m1 3 2/m
 
04.FE.05 Pyrochroite Mn(OH)2 P 3m1 3 2/m
 
04.FE.05 Theophrastite Ni(OH)2 P 3m1 3 2/m
 
04.FE.05 Fougerite! (Fe,Mg)6Fe2(OH)18•4(H2O) R 3m 3 2/m
 

Other Amakinite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Amakinite :
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
15 - WWW-MINCRYST

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

Amakinite

(Fe++,Mg)(OH)2
Dana No: 06.02.01.02 Strunz No: 04.FE.05
Locality:

 

Notes:

 

 
   
 


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