LABRADORITE (Calcium Sodium Aluminum Silicate)
LARDERELLITE (Ammonium Borate Hydroxide)
LAUMONTITE (Hydrated Calcium Aluminum Silicate)
LAURIONITE (Lead Chloride Hydroxide)
LAZULITE (Magnesium Aluminum Phosphate Hydroxide)( Information )
LAZURITE (Sodium Calcium Aluminum Silicate Sulfate)
LEAD (Pb)
RED LEAD (Crocoite)(Crocoite Information)
LEADHILLITE (Lead Sulfate Carbonate Hydroxide)
LEGRANDITE (Hydrated Zinc Arsenate Hydroxide)
LEIFITE (Hydrated Sodium Beryllium Aluminum Silicate Hydroxide Fluoride)
LEPIDOCROCITE (Hydrated Iron Oxide)(Information)
LEPIDOLITE (Potassium Lithium Aluminum Silicate Hydroxide Fluoride)(Info)(Mica Group)
Lepedolite and Tourmaline
LEUCITE (Potasium Aluminum Silicate)
LEUCOPHANITE (Sodium Calcium Beryllium Silicate Fluoride)
LIBETHENITE (Copper Phosphate Hydroxide)
LIMONITE (Hydrated Iron Oxide Hydroxide)
LINARITE (Lead Copper Sulfate hydroxide)
LINNAEITE (Cobalt Sulfide)
LITHIOPHYLITE (Lithium Manganese Iron Phosphate)
LODOLITE (Quartz included with Flouride, Iron Oxide and Calcite)(Included Quartz Info.)
LOLLINGITE (Iron Arsenide)
LORENZENITE (Sodium Titanium Silicate)
LORIMAR (variety of Pectolite)
LUDLAMITE (Hydrated Iron Magnesium Manganese Phosphate)