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Kernite

earth science Maturity 7-9 Next article →

Kernite is a special mineral. It is a type of hydrated sodium borate hydroxide. This means it contains water. It can look colorless or white. The mineral often grows in long, thin shapes. These are called acicular crystals. Sometimes it looks like small, grainy masses.

This mineral has many interesting ways it works. It is quite soft to the touch. It has a Mohs hardness of 2.5 to 3. It can break very easily. This is called a brittle fracture. Kernite can also dissolve in cold water. If it loses its water, it turns into tincalconite. If you heat it above 100 °C, it becomes metakernite. This change cannot be undone.

People found this mineral in 1926. They found it in eastern Kern County, California. It was found at the US Borax Mine. This mine is in the Mojave Desert. The mineral was named after the county where it was found. For a long time, this was the only known source. Now, it is also mined in Argentina and Turkey.

There are some amazing facts about its size. The largest single crystal was very huge. It measured 2.44 by 0.9 by 0.9 meters. That crystal weighed about 3.8 tons. Samples are kept in special places. You can find them at Harvard University in Massachusetts. They are also at the National Museum of Natural History in Washington, D.C.

We use kernite in our daily lives. It is used to produce borax. Borax is a helpful substance. Many different kinds of soaps use borax. This helps us stay clean every day. It is a small part of a big process. We turn raw minerals into things we use at home.

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