Tag: biotite

Magnificent Minerals – Part 2

“Is this a fossil?  Or petrified wood?”, I was asked during a fossil dig in Kansas last week.  After looking at the item of interest, I explained that the find was not a fossil, but the mineral, gypsum. … Read More

Grand Canyon: Granite Rocks

As a geology student I love to look at, touch, and think about rocks.  However, I am afraid that I do not love all kinds of rocks equally.  My least favorite rocks are the ones that look like… Read More

Radical Radiohalos

The depth and beauty of the granite countertop of the ice cream shop intrigued me as I slowly enjoyed my cone.  There were grey, white, clear, and light pink specks, which I knew to be quartz, peachy colored… Read More