Amakinite Mineral Data + Say AMAKINITE


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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.
 

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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 ScalenohedralH-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),
Click Here for Large Amakinite Structure Window Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: cadmium iodide structure

 

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 Diaphaniety: Diaphaniety: 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
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:

relectron=2.91 gm/cc
note: rAmakinite =2.95 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01594
Boson Index = 0.98406
Help on Photoelectric: Photoelectric:

PEAmakinite = 15.67 barns/electron
U=PEAmakinite x relectron= 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: 6.2.1.2 (6)Hydroxides and Oxides Containing Hydroxyl
  (6.2)where X++ (OH)2
  (6.2.1)Brucite group (Rhombohedral: P3¯m1)
 
6.2.1.1 Brucite Mg(OH)2 P 3m1 3 2/m
 
6.2.1.2 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m
 
6.2.1.3 Pyrochroite Mn(OH)2 P 3m1 3 2/m
 
6.2.1.4 Portlandite Ca(OH)2 P 3m1 3 2/m
 
6.2.1.5 Theophrastite Ni(OH)2 P 3m1 3 2/m
Help on  Strunz Class: Strunz Class: IV/F.03-20 IV - Oxides
  IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
  IV/F.03 - Brucite series
 
IV/F.03-10 Brucite Mg(OH)2 P 3m1 3 2/m
 
IV/F.03-20 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m
 
IV/F.03-30 Pyrochroite Mn(OH)2 P 3m1 3 2/m
 
IV/F.03-40 Theophrastite Ni(OH)2 P 3m1 3 2/m
 
IV/F.03-50 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m
 
IV/F.03-60 Sweetite Zn(OH)2 P 41212,P 43212 4 2 2
 
IV/F.03-70 Ashoverite Zn(OH)2 I 41/amd 4/m 2/m 2/m
 
IV/F.03-80 Wulfingite Zn(OH)2 P 212121 2 2 2
 
IV/F.03-90 Spertiniite Cu(OH)2 C mc21 mm2
 
IV/F.03-100 Portlandite Ca(OH)2 P 3m1 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Amakinite

(Fe++,Mg)(OH)2
Dana No: 6.2.1.2 Strunz No: IV/F.03-20
Locality:

 

Notes:

 

 
   
 
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