Danburite

    Danburite is a crystalline mineral similar to topaz. Its chemical formula is CaB₂(SiO₄)₂. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. The mineral has an orthorhombic crystal form. It is usually colourless, like quartz, but can be also either pale yellow, yellowish-brown, or pink. It typically occurs in contact metamorphic rocks.

Additional recommended knowledge

What is the Correct Way to Check Repeatability in Balances?

Safe Weighing Range Ensures Accurate Results

Recognize and detect the effects of electrostatic charges on your balance

It is named for Danbury, Connecticut, United States where it was first discovered in 1839 by Charles Upham Shephard.

References

• Mineral galleries
• Webmineral data