How are mineral deposits formed around edges of hot springs?

Question

How are mineral deposits formed around edges of hot springs?

Answer 1

Evaporation of the water leaving the minerals.

Answer 2

primarily through cooling leading to supersaturation rather than through evaporation, although both processes have the same effect.

Basically, water can only hold elements at a certain maximum concentration, and for most elements this maximum concentration decreases as temperature decreases.  Fluids that discharge at hot springs are normally at or higher than the boiling point of water when in the earth, and are fully loaded, more or less, with all that they can carry of many elements.  these elements drop out as minerals when the water temperature decrease.  

Chemical changes such as pH increase or decrease, loss of volatiles (primarily CO2) and other factors also cause minerals to precipitate.

Answer 3

think of it like a tomato seed, u eat a tomato, seed is pooe'd out and finally rests at the edge of the sewage works and turns into a beautiful tom plant kinda similar analogy, lol like the play on words  im sooo witty