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334 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Heulandite. 
Hortonolite. 
Howlite. 
Hydromagnesite. 
Hydrotalcite. 
Hypersthenite. 
Idocrase. 
Ilmenite. 
Todyrite. 
Tolite. 
Tridosmine. 
Iron (meteoric). 
Jamesonite. 
Jeffersite. 
Kermesite. 
Labradorite. 
Lanarkite. 
Lapis lazuli. 
Laumontite. 
Lazulite. 
Leonhardite. 
Lepidolite. 
Leucite. 
Liebethenite. 
Limonite car. 
Linneite. 
Liroconite. 
Magnesite. 
Magnetite. 
Magnolite. 
Malachite. 
Manganite. 
Marcasite. 
Margarite. 
-Meerschaum. 
Meionite. 
Melaconite. 
Melanosiderite. 
Mesolite. 
Metacinnabarite. 
Millerite. 
Mimetite. 
Mineral coal var. 
Molybdenite. 
Molybdite. 
Muscovite. 
Garnet inclusions. 
Hematite inclusions. 
Magnetite inclusions. 
Tourmaline inclusions. 
Natrolite. 
Nephelite. 
Nitre. 
Oligoclase. 
Aventurine oligoclase. 
Olivenite. 
Opal. 
Fire opal. 
Milky opal. 
Precious opal. 
Semi-opal. 
Wax opal. 
Wood opal. 
Orpiment. 
Orthoclase. 
Adularia. 
Amazonstone. 
Chesterlite. 
Moonstone. 
Ossidian. 
Pumice. 
Sunstone. 
Ozocerite. 
Pectolite. 
Peridot. 
Petzite. 
Pharmacosiderite. 
Phlogopite. 
Pickeringite. 
Picrophyllite. 
Pitchblende. 
Pitticite. 
Polybasite. 
Polyhalite. 
Polymyguite. 
Prehnite. 
Psilomelanite. 
Pyrargyrite. 
Pyrite. 
Pyrolusite. 
Pyromorphite. 
Pyrosclerite. 
Pyroxenite. 
Angite. 
Coccolite. 
Hedenbergite. 
Jeffersonite. 
Malacolite. 
Sahlite. 
Uralite. 
Pyrrhotite. 
Quartz. 
Agate. 
Amethyst. 
Aventurine. 
Basanite. 
Chalcedony. 
Carnelian. 
Chrysoprase. 
Crystal. 
Flint. 
Heliotrope. 
Quartz—Continued. 
Hornstone. 
Jasper. 
Noraculite. 
Onyx. 
Prase. 
Rosy. 
Sandstone flexible, 
Sardonyx. 
Siliceous sinter. 
Silicified wood. 
Smoky. 
Quicksilver, 
Realgarite. 
Retinite. 
Rhodonite. 
Ripidolite. 
Rutile. 
Samarskite. 
Sassolite. 
Scapolite. 
Scheeletinite. 
Scheelite. 
Schirmerite. 
Schreibersite. 
Scorodite. 
Serpentine var. 
Chrysotilite. 
Ophite. 
Precious. 
Siderite. 
Sillimanite. 
Smectite. 
Smithsonite. 
Sphalerite. 
Spinel. 
Spodumen. 
Stannite. 
Staurolite. 
Stephanite. 
Stercorite. 
Stibnite. 
Stilbite. 
Strontianite. 
Struvite. 
Sulphur. 
Sussexite. 
Sylvanite. 
Sylvite. 
Tachydrite. 
Tale, 
Tellurite. 
Tellurium. 
Tennantite. 
Teschemacherite. 
Tetrahedrite. 
