Kernite Mineral Data

Kernite Mineral Data +

[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee

General Kernite Information

Chemical Formula:

Na2B4O6(OH)2·3(H2O)

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

Empirical Formula:

Na₂B₄O₆(OH)₃·3(H₂O)

Environment:

Continental sedimentary basins.

IMA Status:

Valid Species (Pre-IMA) 1927

Locality:

Boron, Kern County, California, the county that contains the fabulous borate deposits at Kramer. Link to MinDat.org Location Data.

Name Origin:

Named after it's locality.

Synonym:

ICSD 10378

PDF 25-1322

Rasorite

Kernite Image

Images:

Kernite

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

Axial Ratios:

a:b:c =0.7666:1:1.713

Cell Dimensions:

a = 7.016, b = 9.152, c = 15.678, Z = 4; beta = 108.88° V = 952.53 Den(Calc)= 2.02

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 7.4(1), 6.64(0.85), 3.25(0.35),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
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]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Cooper W F , Larsen F K , Coppens P , Giese R F , American Mineralogist , 58 (1973) p.21-31, Electron population analysis of accurate diffraction data. V. Structure and, one-center charge refinement of the light-atom mineral kernite,, Na2B4O6(OH)2.3H2O, high order refinement

View Additional jPOWD Structure files for Kernite
[1]

Physical Properties of Kernite

Cleavage:

[100] Perfect, [001] Perfect, [201] Good

Color:

Colorless, White.

Density:

1.9 - 1.92, Average = 1.91

Diaphaniety:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Crystalline - Coarse - Occurs as well-formed coarse sized crystals.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

None.

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Kernite

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

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.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Kernite

Electron Density:

r_electron=2.05 gm/cc
note: r_Kernite=2.02 gm/cc.

Fermion Index

Fermion Index = 0.02996
Boson Index = 0.97004

Photoelectric:

PE_Kernite= 0.51 barns/electron
U=PE_Kernite x r_electron= 1.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kernite is Not Radioactive

Kernite Classification

Dana Class:

26.4.5.1 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.4)Dana Type

(26.4.5)Dana Group

26.4.5.1 Kernite Na2B4O6(OH)2·3(H2O) P 2₁/c 2/m

Strunz Class:

V/J.04-10 V - Nitrates, Carbonates and Borates

V/J - Chain borates with [B2O4]2- to [B6O10]2-

V/J.04 - Kernite series

V/J.04-10 Kernite Na2B4O6(OH)2·3(H2O) P 2₁/c 2/m

Other Kernite Information

References:

NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Sinkankas66)

Search for Kernite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Kernite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Kernite Mineral Data :

Ask about Kernite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Kernite

Na2B4O6(OH)2·3(H2O)
Dana No: 26.4.5.1 Strunz No: V/J.04-10
Locality:

Notes: