Mineral/rock

Derived from or for

Hafnium

Latin Hafnia = ancient name for Copenhagen

Halite

Greek hals = the sea (see salt)

Halloysite

Baron Omalius d'Halloy (1707-1789), Belgian geologist and first observer

Hanksite

Henry Garber Hanks (1826-1907), State Mineralogist of California

Hausmannite

Johann Friedrich Ludwig Hausmann (1782-1859), German mineralogist

Hectorite

locality at Hector, California, USA

Heliodor

Greek helios = sun -- "gift of the sun". 

Helvite

Greek helvus = light yellow alluding to the mineral's color

Hematite

Greek haimatites = bloodlike alluding to its red color

Hessonite

Greek ésson = inferior in reference to its inferior hardness and color

Heulandite

John Henry Heuland (1778-1856), English mineral collector

Hiddenite

A.E. Hidden, mine owner and first observer