Recognized as an element by H. Cavendish at London, UK.
Remarks
Colorless, odorless gas, insoluble in water. Burns in air,
forms explosive mixtures with air. Used for making ammonia, cyclohexane,
methanol, etc. Proposed as a future fuel to replace petroleum. Reactions
between cosmic radiation and gases in the upper atmosphere produce most of
the world's natural tritium (3H) and is not found in any
natural mineral due to the short half-life.
Diagnostic tests:
The presence of hydrogen in minerals is detected by using the closed-tube test and
observing the formation of colorless drops of water (H2O) on
the walls of the tube when the sample is heated.
References
Emsley, J., 1991; THE ELEMENTS : Sec. Ed.,
Clarendon Press, Oxford, 251 p.
(* - Mineral Name Is Not IMA Approved)
(! - New Dana classification added or changed from Danas New Mineralogy)
(? - IMA Discredited Mineral Species Name)
There are 2740 minerals with H in the Mineralogy Database.