A new gem shop has opened in the Crossroads Center Mall, offering a wide variety of shiny crystals and ... for the nonprofit Minnesota Mineral Club, said he hopes the store can help people get more ...

Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to ...

A new gem shop has opened in the Crossroads Center Mall, offering a wide variety of shiny ... Minnesota Mineral Club, said he hopes the store can help people get more interested in rocks and ...