Ice Crystals Over Water

I hiked along the St Croix River today in spite of the bitter cold that has engulfed the U.S. This morning it was thirteen degrees below. The river is frozen over but there are a number of springs at the base of the cliffs along the river. The spring water is warm enough to not freeze. The water from the springs forms little streams that run into the river and almost immediately disappear under the ice of the river.

My blip is along the edge where the water from one of the springs runs into the river. I think the crystal-like snow is formed when steam rising from the open water freezes in the frigid air. That's just my guess.