Mineral/rock

Derived from or for

Labradorite

the mineral was first brought from the Isle of Paul, Labrador, about 1770

Langbeinite

A. Langbein, German chemist of Leopoldshall

Lanthanum

Greek lanthanein = to be unseen, unnoticed, or concealed 

Lapis lazuli

Latin lapis = a stone and Persian lazhward = blue color

Laumontite (zeolite)

François Pierre Nicolas Giller de Laumont (1747-1834), French discoverer 

Lautarite

locality at Oficina Lautaro, Antofagasta Province, Chile

Lecontite

John Lawrence LeConte (1825-1883), American entomologist of Philadelphia who discovered the mineral

Leonite

Leo Strippelmann, director of the salt work at Westerregeln, Germany

Lepidocrocite

Greek lepis = scale in reference to the scaly or feathery habit, and (Latin) crocinus = saffron, golden, yellow for its color

Lepidolite

Greek lepis = scale and lithos = stone because of its micaceous structure

Leucite

Greek leukos = white reflecting its whire or gray color

Leucoxene

Greek leukos = white and xenos = stranger alluding to its color and secondary nature

Lime

Old English; related to Dutch iljm & Latin limus = mud, linere = to smear

Limonite

Greek leimon = meadow since it often occurs in bogs and swamps

Lithiophilite

Greek lithos = stone and philos = loving alluding to its composition

Lithiophorite

Greek lithos = stone and to bear in reference to its lithium content 

Lithium

Greek lithos = stone

Loeweite

Alexander Loewe (1808-1846), German chemist

Loparite

Russian name for the Lapp inhabitants of the Kola Peninsula

Ludwigite

Ernst Ludwig (1842-1915), Austrian chemist, U of Vienna

Lutetium

Lutetia, the ancient name for Paris