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| Lehnerite | Lehuntite | Leisingite |
| Leiteite | Lemmleinite-Ba | Lemmleinite-K |
| Lemoynite | Lenaite | Leningradite |
| Lennilenapeite | Lenoblite | Leonhardite |
| Leonhardtite | Lepersonnite-(Gd) | Lepidocrocite |
| Lepidolite | Lepidomelane | Lepidomorphite |
| Lesleyite | Lesserite | Lesukite |
| Leucaugite | Leucophyllite | Leuzit |
| Leverrierite | Levinsonite-(Y) | Levyine |
| Levyite | Levyne-Ca | Levyne-Na |
| Levynite | Lewistonite | Liandratite |
| Liberite | Liddicoatite | Liebauite |
| Liebenbergite | Lilalite | Lilalith |
| Lime mica | Lime-bronzite | Lime-harmotome |
| Lime-soda mesotype | Lincolnine | Lincolnite |
| Lindackerite | Lindqvistite | Lindsleyite |
| Linosite | Lintisite | Lintonite |
| Liottite | Lisetite | Lishizhenite |
| Lisitsynite | Lithia mica | Lithiomarsturite |
| Lithioneisenglimmer | Lithionglaucophan | Lithionglimmer |
| Lithionit | Lithionite | Lithionitesilicat |
| Lithiotantite | Lithiowodginite | Lithium muscovite |
| Lithium phengite | Lithium-amphibole | Lithosite |
| Litvinskite | Liujinyinite | Lodochnikite |
| Loganite | Lokkaite-(Y) | Lomonite |
| Lomonosovite | Lomonosovite | Londonite |
| Lonecreekite | Lonsdaleite | Loparite |
| Loranskite-(Y) | Lorettoite | Lotalite |
| Lotharmeyerite | Loudounite | Loughlinite |
| Lourenswalsite | Lovdarite | Loveringite |
| Luanheite | Luberoite | Lucasite |
| Luddenite | Ludjibaite | Ludlockite |
| Lueshite | Luetheite | Lukechangite |
| Lukrahnite |
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