Mineralogy Database

Kainite Mineral Data

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General Kainite Information

Help on Chemical  Formula: Chemical Formula: MgSO4•KCl•3(H2O)
Help on Composition: Composition: Molecular Weight = 248.97 gm
   Potassium  15.70 %  K    18.92 % K2O
   Magnesium   9.76 %  Mg   16.19 % MgO
   Hydrogen    2.43 %  H    21.71 % H2O
   Sulfur     12.88 %  S    32.16 % SO3
   Chlorine   14.24 %  Cl   14.24 % Cl
                -   %   Cl   -3.21 % -O=Cl2   
   Oxygen     44.98 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(SO4)KCl•3(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1865
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek kainos, meaning "contemporary."
Help on Name Pronunciation: Name Pronunciation: Kainite Say KAINITE
Help on Synonym: Synonym: ICSD 26003
  PDF 25-660

Kainite Image

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  Kainite   Szaibelyite

Comments: pale violet granular kainite intermixed with white ascharite (szaibelyite).
Location: Havesa, Empelde, Hannover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kainite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.215:1:0.5871
Help on Cell Dimensions: Cell Dimensions: a = 19.72, b = 16.23, c = 9.53, Z = 16; beta = 94.92° V = 3,038.89 Den(Calc)= 2.18
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.372(1), 3.08(0.86), 7.771(0.83),
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: ( 0 1 0) ( 4 2 1) ( 4 2 1) ( 1 0 0) ( 0 0 1)

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Physical Properties of Kainite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Blue, Colorless, Violet, Gray, Gray blue.
Help on Density: Density: 2.1
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white

Optical Properties of Kainite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.019 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.055 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2317,KPDmeas= 0.2405,KC= 0.2452
Ncalc = 1.51 - 1.53
Help on Optical Data: Optical Data: Biaxial (-), a=1.494, b=1.505, g=1.516, bire=0.0220, 2V(Calc)=88, 2V(Meas)=90.

Calculated Properties of Kainite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.13 gm/cc
note: Specific Gravity of Kainite =2.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKainite = 3.49 barns/electron
U=PEKainite x relectron= 7.41 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 229.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Kainite per GRapi unit = 0.44 (%)

Estimated Radioactivity from Kainite - barely detectable


Kainite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.07)where (A+ B++)2 (XO4) Zq�x(H2O)
  (31.07.01)Dana Group Kainite MgSO4•KCl•3(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.DF.10 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DF -With large and medium-sized cations
07.DF.10 Kainite MgSO4•KCl•3(H2O) C 2/m 2/m

Other Kainite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Kainite :
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

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Dana No: Strunz No: 07.DF.10





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