0LABRADORITE (Calcium Sodium Aluminum Silicate)
0LARDERELLITE (Ammonium Borate Hydroxide)
0LARIMAR (variety of Pectolite)
0LAUEITE (Hydrated Manganese Iron Phosphate Hydroxide)
0LAUMONTITE (Hydrated Calcium Aluminum Silicate)
0LAURIONITE (Lead Chloride Hydroxide)
0LAZULITE (Magnesium Aluminum Phosphate Hydroxide)
0LAZURITE (Sodium Calcium Aluminum Silicate Sulfate)
0LEAD (Pb)
0LEADHILLITE (Lead Sulfate Carbonate Hydroxide)
0LECHATELIERITE (Silicon Dioxide)
0LEGRANDITE (Hydrated Zinc Arsenate Hydroxide)
0LEIFITE (Hydrated Sodium Beryllium Aluminum Silicate Hydroxide Fluoride)
0LEPIDOLITE (Potassium Lithium Aluminum Silicate Hydroxide Fluoride)
0LEUCITE (Potasium Aluminum Silicate)
0LEUCOCHALCITE (variety of Olivenite)
0LEUCOPHANITE (Sodium Calcium Beryllium Silicate Fluoride)
0LIBETHENITE (Copper Phosphate Hydroxide)
0LIMESTONE (a common sedimentary rock)
0LIMONITE (Hydrated Iron Oxide Hydroxide)
0LINARITE (Lead Copper Sulfate hydroxide)
0LINNAEITE (Cobalt Sulfide)
0LIROCONITE (Hydrated Copper Aluminum Arsenate Hydroxide)
0LITHIOPHILITE (Lithium Manganese Iron Phosphate)
0LOLLINGITE (Iron Arsenide)
0LORENZENITE (Sodium Titanium Silicate)
0LARIMAR (variety of Pectolite)
0LUDLAMITE (Hydrated Iron Magnesium Manganese Phosphate)