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Kernite
Current inventory:  0 gems
 

Kernite

Chemistry:  Na2B4O6(OH)33(H2O)

Discovered in 1927;   IMA status: Valid (pre-IMA; Grandfathered).
Kernite is named for Kern County, California where it was discovered at Rich Station, Boron, Kramer District, Kern County, California, USA.

 

Classification

   

   

Mineral Classification:

Borates

Strunz 8th Ed. ID:

5/J.05-10

Nickel-Strunz 10th Ed. ID:

6.DB.05

 

6 : BORATES
D : Tetraborates
B : Ino-tetraborates

Related to:

Kernite Series

 

 

Crystal Data

   

   

Crystallography:

Monoclinic - Prismatic

Crystal Habit:

Crystals commonly nearly equant, with over 30 forms noted; typically as cleavable masses, to 3.5 m, bent or warped; massive.

Twinning:

On [011]

 

 

Physical Properties

   

 

Cleavage:

[100] Perfect, [001] Perfect, [201] Fair

Fracture:

Splintery

Tenacity:

Brittle; flexible and elastic in cleavage fragments

Hardness (Mohs):

2.5

Density:

1.906 (g/cm3)

Luminescence:

None

Radioactivity:

Not Radioacitve

Other:

Slowly soluble in cold water, readily so in hot water.

 

 

Optical Properties

   

   

Color:

Colorless, White

Transparency:

Transparent to Translucent

Luster:

Vitreous, Satiny on fibrous cleavages

Refractive Index:

1.454 - 1.488  Biaxial ( - )

Birefringence:

0.0340

Dispersion:

Distinct; r > v

Pleochroism:

X = colorless, Y = colorless, Z = colorless

 

 

Occurances

   

   

Geological Setting:

An important ore mineral of borax in sedimentary borate deposits, deposited under warm conditions or formed by metamorphism.

Common Associations:

Borax, Colemanite, Inyoite, Ulexite

Type Locality:

Rich Station, Boron, Kramer District, Kern County, California, USA

Year Discovered:

1927

View mineral photos:

Kernite Mineral Photos and Locations

 

 

More Information

   

   

 

Mindat.org
Webmineral.com

 

 


Kernite is a very rare borate mineral and rarely faceted. Kernite could be considered a metamorphic mineral since it is thought to form from the recrystalization of the mineral borax as a result of mild heat and pressure. Borax is an evaporate mineral deposited in arid regions from runoff waters rich in the element Boron.

There are only a couple sources for Kernite but the main source for facetable crystals is from the Kramer borate deposite, Boron, Kern County, California, USA which is also the Type Locality.
 

  
Kernite gems for sale:

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