How do I identify Weeksite?

Weeksite can be identified by its hardness of 1 - 2 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.

What color is Weeksite?

Weeksite typically appears in Yellow. Color can vary depending on impurities and formation conditions.

How hard is Weeksite?

Weeksite has a hardness of 1 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Weeksite

A variety of Minerals

What is Weeksite?

Weeksite is a naturally occurring uranium silicate mineral with the chemical formula: K2(UO2)2Si6O15•4(H2O), potassium uranyl silicate. Weeksite has a Mohs hardness of 1-2. It was named for USGS mineralogist Alice Mary Dowse Weeks (1909–1988).

Weeksite Market Value Calculator

Estimate the market value of Weeksite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Weeksite Localities Map

See where Weeksite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Key Characteristics

Appearance of Weeksite

Weeksite is visually similar to other uranium minerals such as carnotite and zippeite, both being encrustations that form on other rocks (usually sandstones or limestones).