leightonite
A monoclinic-prismatic mineral containing calcium, copper, hydrogen, oxygen, potassium, and sulfur.

leisingite
A trigonal-hexagonal scalenohedral mineral containing copper, hydrogen, iron, magnesium, oxygen, tellurium, and zinc.

leiteite
A monoclinic-prismatic mineral containing arsenic, oxygen, and zinc.

lemanskiite
A tetragonal-trapezohedral dark blue mineral containing arsenic, calcium, chlorine, copper, hydrogen, oxygen, and sodium.

lemoynite
A monoclinic-prismatic mineral containing calcium, hydrogen, iron, niobium, oxygen, potassium, silicon, sodium, and zirconium.

lenaite
A tetragonal-ditetragonal pyramidal gray mineral containing iron, silver, and sulfur.

lengenbachite
A triclinic mineral containing arsenic, copper, lead, silver, and sulfur.

leningradite
An orthorhombic-dipyramidal mineral containing chlorine, copper, lead, oxygen, and vanadium.

lennilenapeite
A triclinic mineral containing aluminum, barium, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, sodium, and zinc.

lenoblite
An orthorhombic-disphenoidal mineral containing hydrogen, oxygen, and vanadium.

leogangite
A monoclinic-prismatic mineral containing arsenic, copper, hydrogen, oxygen, silicon, and sulfur.

leonardite
A dark, vitreous mineraloid produced by surface oxidation of lignite

leonardites
plural of leonardite

leptochlorite
A chlorite that contains mostly ferric iron rather than ferrous iron. Leptochlorites are typically richer in trivalent ions relative to silicon and divalent ions.

leptochlorites
plural of leptochlorite

leptynite
granulite

leptynites
plural of leptynite

lermontovite
An orthorhombic-dipyramidal gray green mineral containing hydrogen, oxygen, phosphorus, and uranium.

lesukite
An isometric-hexoctahedral mineral containing aluminum, chlorine, hydrogen, and oxygen.

lettsomite
cyanotrichite.

lettsomites
plural of lettsomite

leuchtenbergite
A variety of clinochlore that contains little or no iron.

leuchtenbergites
plural of leuchtenbergite

leucogabbro
A gabbro that is light in colour due to a high concentration of plagioclase feldspar.

leucogabbros
plural of leucogabbro

leucophoenicite
A monoclinic-prismatic mineral containing hydrogen, manganese, oxygen, and silicon.

leucophosphite
A monoclinic-prismatic mineral containing hydrogen, iron, oxygen, phosphorus, and potassium.

leucopyrite
löllingite.

leucopyrites
plural of leucopyrite

leucosphenite
A monoclinic-prismatic mineral containing barium, boron, oxygen, silicon, sodium, and titanium.

leucotrondhjemite
A leucocratic variety of trondhjemite.

leucoxene
A mineral, mostly composed of rutile, occurring in igneous rocks, often by alteration of ilmenite or other titanium minerals

leucoxenes
plural of leucoxene

levinsonite
A colorless mineral found in Tennessee, USA.

levynite
levyne

liandratite
A trigonal-hexagonal scalenohedral mineral containing niobium, oxygen, tantalum, and uranium.

liberite
A monoclinic-domatic mineral containing beryllium, lithium, oxygen, and silicon.

liddicoatite
A trigonal-ditrigonal pyramidal mineral containing aluminum, boron, calcium, fluorine, hydrogen, lithium, oxygen, silicon, and sodium.

liebauite
A monoclinic-prismatic mineral containing calcium, copper, oxygen, and silicon.

liebenbergite
An orthorhombic-dipyramidal yellow green mineral containing magnesium, nickel, oxygen, and silicon.

liebigite
An orthorhombic-pyramidal mineral containing calcium, carbon, hydrogen, oxygen, and uranium.

lievrite
Synonym of ilvaite.

ligure
A gemstone, supposed to have been a form of agate

ligures
plural of ligure

ligurite
A variety of sphene or titanite.

ligurites
plural of ligurite

likasite
An orthorhombic-pyramidal blue mineral containing copper, hydrogen, nitrogen, and oxygen.

lillehammerite
Alternative form of lillhammerite.

lillhammerite
Synonym of pentlandite.

limburgite
A dark volcanic rock resembling basalt and consisting essentially of olivine and augite with a brownish glassy groundmass.

limburgites
plural of limburgite

limeburner
A tradesman who operates a limekiln, burning limestone at high heat to produce quicklime for use as an agricultural manure, in cement, and otherwise.

limeburners
plural of limeburner

limeworking
The processing of limestone.

limeworks
A limestone-processing facility.

limnologies
plural of limnology

limnology
The science concerning the biological, physical and geological properties of fresh water bodies, especially lakes and ponds.

limurite
A kind of augite-axinite rock.

linarite
A monoclinic-prismatic mineral containing copper, hydrogen, lead, oxygen, and sulfur.

lindackerite
A triclinic-pinacoidal mineral containing arsenic, copper, hydrogen, and oxygen.

lindbergite
A monoclinic-prismatic mineral containing aluminum, carbon, hydrogen, manganese, oxygen, and sodium.

lindgrenite
A monoclinic-prismatic mineral containing copper, hydrogen, molybdenum, and oxygen.

lindqvistite
A hexagonal-dihexagonal dipyramidal black mineral containing iron, lead, magnesium, manganese, oxygen, and silicon.

lindsleyite
A trigonal-rhombohedral black mineral containing barium, chromium, iron, magnesium, oxygen, strontium, and titanium.

lintisite
A monoclinic-prismatic mineral containing hydrogen, lithium, oxygen, silicon, sodium, and titanium.

liparite
Rhyolite.

liparites
plural of liparite

lipscombite
A tetragonal-trapezohedral mineral containing hydrogen, iron, manganese, oxygen, and phosphorus.

liptinite
The finely-ground and macerated remains found in coal deposits.

liptodetrinite
A maceral of the liptinite group.

lisetite
An orthorhombic-pyramidal colorless mineral containing aluminum, calcium, oxygen, silicon, and sodium.

lishizhenite
A triclinic-pinacoidal mineral containing hydrogen, iron, oxygen, sulfur, and zinc.

liskeardite
An orthorhombic mineral containing aluminum, arsenic, hydrogen, iron, and oxygen.

litchfieldite
A rare coarse-grained, foliated igneous rock that is a variety of nepheline syenite.

litharenite
A lithic sandstone

litharenites
plural of litharenite

lithiomarsturite
A triclinic-pinacoidal mineral containing calcium, hydrogen, lithium, manganese, oxygen, and silicon.

lithiophosphate
An orthorhombic-pyramidal mineral containing lithium, oxygen, and phosphorus.

lithiotantite
A monoclinic-prismatic mineral containing lithium, niobium, oxygen, and tantalum.

lithiowodginite
A monoclinic-prismatic grayish white mineral containing lithium, oxygen, and tantalum.

lithodome
Any member of several species of bivalves that form and inhabit holes in limestone; especially any of the former genus Lithodomus, roughly corresponding to modern-day Lithophaga

lithodomes
plural of lithodome

lithoglyph
An engraving on a gemstone.

lithoglyphs
plural of lithoglyph

lithokelyphopedia
plural of lithokelyphopedion

lithokelyphopedion
A lithopedion in which both fetus and sac are calcified.

lithomancy
divination with the use of precious or semi-precious stones, gemstones, or normal stones by either interpreting the light they reflect (crystallomancy), or how they fall (sortilege).

lithopaedion
Alternative form of lithopedion.

lithopedia
plural of lithopedion

lithopedian
Misspelling of lithopedion.

lithopedion
A calcium-encased foetus that occurs in ectopic abdominal pregnancies when the foetus dies and is not reabsorbed by the maternal body, whereby the maternal system encases the foreign body (foetus) in calcium to isolate it.

lithopedions
plural of lithopedion

lithophyse
A spherulitic cavity, often with concentric chambers, observed in some volcanic rocks, such as rhyolitic lavas.

lithophyses
plural of lithophyse

lithosite
A monoclinic-sphenoidal colorless mineral containing aluminum, hydrogen, oxygen, potassium, and silicon.

lithozone
A lithostratigraphic unit: an interval of geological strata defined on the basis of its characteristic lithostratigraphy.

lithozones
plural of lithozone