Skip to content

Tag Archives: Calcite

Context, Calcite and Vikings

The vikings are in the news again, and not just for their new show on the History Channel. I’ve talked about calcite’s amazing optical properties before, but completely failed to mention* the theory that calcite is potentially the same as a tool called the sunstone, rumored to be used by viking navigators to navigate the […]

Rocks Turn Paperclip Invisible??

Ugh. Monday. But to brighten up your otherwise dreary¬†beginning¬†of the week, here’s a brand new Mineral Monday! Calcite is our Mineral this week. It’s a carbonate mineral, which means it has the carbonate ion CO3^(2-). Calcite is fun in general, because being a carbonate mineral means that it’s mildly reactive. Dropping a weak acid on […]