Mineralogy Database

Kernite Mineral Data

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General Kernite Information

Help on Chemical  Formula: Chemical Formula: Na2B4O6(OH)2•3(H2O)
Help on Composition: Composition: Molecular Weight = 290.28 gm
   Sodium    15.84 %  Na   21.35 % Na2O
   Boron     14.90 %  B    47.97 % B2O3
   Hydrogen   3.13 %  H    27.93 % H2O
   Oxygen    66.14 %  O
            ______        ______ 
            100.00 %       97.24 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2B4O6(OH)3•3(H2O)
Help on Environment: Environment: Continental sedimentary basins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1927
Help on Locality: Locality: Boron, Kern County, California, the county that contains the fabulous borate deposits at Kramer. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's locality.
Help on Name Pronunciation: Name Pronunciation: Kernite Say KERNITE
Help on Synonym: Synonym: ICSD 10378
  PDF 25-1322

Kernite Image

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Comments: Translucent kernite cleavage prism with white superficial dehydration coating.
Location: Pacific Coast Boron Mine, Boron, Kern County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kernite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7666:1:1.713
Help on Cell Dimensions: Cell Dimensions: a = 7.016, b = 9.152, c = 15.678, Z = 4; beta = 108.88° V = 952.53 Den(Calc)= 2.02
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.4(1), 6.64(0.85), 3.25(0.35),
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 1 0) ( 2 0 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Kernite

Help on Cleavage: Cleavage: {100} Perfect, {001} Perfect, {201} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 1.9 - 1.92, Average = 1.91
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Kernite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2333,KPDmeas= 0.2468,KC= 0.2386
Ncalc = 1.45 - 1.48
Help on Optical Data: Optical Data: Biaxial (-), a=1.454, b=1.472, g=1.488, bire=0.0340, 2V(Calc)=84, 2V(Meas)=80. Dispersion r > v distinct.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Kernite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.05 gm/cc
note: Specific Gravity of Kernite =2.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEKernite = 0.51 barns/electron
U=PEKernite x rElectron Density= 1.05 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kernite is Not Radioactive

Kernite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.04)Dana Type
  (26.04.05)Dana Group Kernite Na2B4O6(OH)2•3(H2O) P 21/c 2/m
Help on  Strunz Class: Strunz Class: 06.DB.05 06 - BORATES
  06.D - Tetraborates
  06.DB -Ino-tetraborates
06.DB.05 Kernite Na2B4O6(OH)2•3(H2O) P 21/c 2/m

Other Kernite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Sinkankas66)
Help on See Also: See Also: Links to other databases for Kernite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineral and Gemstone Kingdom
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 06.DB.05





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