It occurs as replacement of cassiterite in hydrothermal deposits.

Fluorite is a colorful mineral associated with hydrothermal deposits.

It is usually found in low to moderate temperature hydrothermal deposits.

Paramelaconite forms as a secondary mineral in hydrothermal deposits of copper.

It is formed in hydrothermal deposits from locally metamorphosed dolomite.

The higher temperature pegmatites most likely preceded the hydrothermal deposits.

Deposits created by means of these hot solutions are called hydrothermal deposits.

However, it has also been found in hydrothermal deposits where a biological source appears improbable.

It occurs in high temperature hydrothermal deposits with pyrrhotite and chalcopyrite.

The primary lead-zinc-silver association indicates hydrothermal deposits of a medium temperature range (300 to 150 C).