September 3, 2018

Monday Geology Picture: Heavy Mineral Lag

Posted by Evelyn Mervine

A pretty, garnet-rich heavy mineral lag on a New Hampshire beach.

Life has been busy, so once again I’ve been negligent with blogging. Let’s see if I can do better for the rest of the year.

To start, here’s a beautiful picture of a heavy mineral lag on a beach in New Hampshire. The red garnets show up particularly well. The heavier minerals, including garnets, have concentrated behind a log on a lakeside beach. Wave action has winnowed the lighter minerals away, leaving the heavier ones behind. I took this picture about a week ago when I was on holiday.

Enjoy this week’s picture! Does anyone else have pretty pictures of heavy mineral lags?