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Kernite

Pictures (8 Images total)

Kernit-Spaltstück
Views (File:
1270998068
): 2697
Kernit-Spaltstück
Größe: 47x15 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine/U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine)
Mineral: Kernite
Image: 1270998068
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Kernit-Spaltstück

Größe: 47x15 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA

Copyright: John Sobolewski
Contribution: slugslayer 2010-04-11
Locality: U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine) / U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Kernit
Views (File:
1270998094
): 2489
Kernit
Größe: 55x27 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine/U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine)
Mineral: Kernite
Image: 1270998094
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Kernit

Größe: 55x27 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA

Copyright: John Sobolewski
Contribution: slugslayer 2010-04-11
Locality: U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine) / U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Kernit
Views (File:
1113840481
): 3509
Kernit
Aggregat perfekter tafelig-prismatischer Kristalle bis 3,5 cm Größe; Stufengröße: 4 x 4 x 2,5 cm; Fundort: U.S. Borax Mine, Boron, Kern County, Kalifornien, USA
Copyright: Peter Haas; Contribution: Mineralienatlas
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine
Mineral: Kernite
Image: 1113840481
License: Usage for Mineralienatlas project only
Kernit

Aggregat perfekter tafelig-prismatischer Kristalle bis 3,5 cm Größe; Stufengröße: 4 x 4 x 2,5 cm; Fundort: U.S. Borax Mine, Boron, Kern County, Kalifornien, USA

Copyright: Peter Haas
Contribution: Mineralienatlas 2005-04-18
Locality: U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Kernit
Views (File:
1113840493
): 2731
Kernit
Aggregat perfekter tafelig-prismatischer Kristalle bis 3,5 cm Größe; Stufengröße: 4 x 4 x 2,5 cm; Fundort: U.S. Borax Mine, Boron, Kern County, Kalifornien, USA
Copyright: Peter Haas; Contribution: Mineralienatlas
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine
Mineral: Kernite
Image: 1113840493
License: Usage for Mineralienatlas project only
Kernit

Aggregat perfekter tafelig-prismatischer Kristalle bis 3,5 cm Größe; Stufengröße: 4 x 4 x 2,5 cm; Fundort: U.S. Borax Mine, Boron, Kern County, Kalifornien, USA

Copyright: Peter Haas
Contribution: Mineralienatlas 2005-04-18
Locality: U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Kernit
Views (File:
1110613153
): 1905
Kernit
Farbloses Kernit-Bruchstück von 6 cm Länge; Fundort: Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: McSchuerf; Contribution: Mineralienatlas
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine/U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine)
Mineral: Kernite
Image: 1110613153
License: Usage for Mineralienatlas project only
Kernit

Farbloses Kernit-Bruchstück von 6 cm Länge; Fundort: Borax Open Pit, Boron, Kern Co., Kalifornien, USA

Copyright: McSchuerf
Contribution: Mineralienatlas 2005-03-12
Locality: U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine) / U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Kernit (Spaltstück) mit Tinkalkonit-Überzug
Views (File:
1564325210
): 601
Kernit (Spaltstück) mit Tinkalkonit-Überzug
U.S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA. L:12cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine/U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine)
Mineral: Kernite, Tincalconite
Image: 1564325210
License: Usage for Mineralienatlas project only
Kernit (Spaltstück) mit Tinkalkonit-Überzug

U.S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA. L:12cm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2019-07-28
Locality: U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine) / U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA

Collectors Summary

Hardness (Mohs) 2.5
Solubility +++ H2O, Aufbewahren in einem versiegelten Behälter, verliert H2Oan trockener Atmosphäre
Crystal System monoklin, P21/c

Chemism

Chemical formula

Na2B4O6(OH)2·3H2O

Chemical composition

Natrium, Bor, Sauerstoff, Wasserstoff

Unit weight: 273.2836464 u; Number of atoms in the formula: 25

Info

Empirical formula:

Na2B4O6(OH)2·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.95

8

32.00

1.0079470

8.0635760

Boron

B

15.82

4

16.00

10.8117000

43.2468000

Oxygen

O

64.40

11

44.00

15.9994300

175.9937300

Sodium

Na

16.82

2

8.00

22.9897702

45.9795404

Analysis wt%

Na2O : 23.10, B2O3 : 51.00, H2O : 26.10 (Ref: American Mineralogist 73)

Strunz 9th edition incl. updates

6.DB.05

6: Borate
D: Tetraborate
B: Ketten- und Band(Ino)-Tetraborate
05:Kernit-Gruppe

Lapis Classification

V/J.04-010

V: NITRATE, CARBONATE UND BORATE
J: Kettenborate [B2O4] 2- bis [B6O10] 2-

Classification by Hölzel

6.DB.100

6: Borates
D: Tetraborates
B: Inotetraborates
1: Kernite-Group - 4(2P+2T)

Dana 8th edition

26.04.05.01

26: Hydrated Borates Containing Hydroxyl or Halogen
04: Hydrated Borates Containing Hydroxyl or Halogen

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.034

Birefringence chart\! Kernite title=Birefringence chart Kernite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.454

RI value β

1.472

RI value γ / ε

1.488

Ri mean

1.471

2V angle

Biaxial (-) 80°

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

7.016

Cell parameters b (Å)

9.152

Cell parameters c (Å)

15.678

Cell parameters a/b or c/a

0.767

Cell parameters c/b

1.713

Cell parameters α

90°

Cell parameters β

108.88

Cell parameters γ

90°

Z

4

Volumne (ų)

952.53

X-Ray Powder Diffraction

7.40(100),
6.64(80),
3.895(20),
3.705(20),
3.253(30),
3.132(30),
2.882(30),
2.472(30)

XRD chart Kernite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.908 (gemessen)

1.906 ( ρ calc. Mineralienatlas )

Instability

+++ H2O, Aufbewahren in einem versiegelten Behälter, verliert H2Oan trockener Atmosphäre

Preface

Author (Name, Year)

Schaller, 1927

Additional Information

Wichtiges Borerz für verschiedene Industriezweige, z.B. Glaserzeugung, Grundstoffindustrie und Waschmittelerzeugung (Perborate)

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H360Fd: Kann die Fruchtbarkeit beeinträchtigen. Kann vermutlich das Kind im Mutterleib schädigen., P201: Vor Gebrauch besondere Anweisungen einholen., P308+P313: Bei Exposition oder falls betroffen: Ärztlichen Rat einholen / ärztliche Hilfe hinzuziehen.

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 352.

G. Diego Gatta; Alessandro Guastoni; Paolo Lotti; Giorgio Guastella; Oscar Fabelo; Maria Teresa Fernandez-Diaz: A multi-methodological study of kernite, a mineral commodity of boron. American Mineralogist Vol.105, Nr. 9 (2020) S. 1424-1431.

Other languages

German

Kernit

Spanish

Kernita

French

Kernite

English

Kernite

Russian

Кернит

Simplified Chinese

斜方硼砂

Alternative Name

Rasorite

CNMNC symbol

Symbol

Ker

Locations with GPS information