55 A Acasta Gneiss 38 Agate Slab 21 Albite 30 Algal Structures OilBearing 40 Amazonite 30 Amethyst 24 Geode 17 Analcime Crystals 20 Asbestos 25 46 Azurite 27 B Baltimore Gneiss 45 Barite 31 BariteCrested Blades 46 Benchmark 11 Beryl Crystal 20 Big Al 15 18 Biotite Syenodiorite Orbicular 15 Bladed Sand Selenite Crystals 49 Blue Celestite Crystals 32 Brachiopod 21 Branches LichenCovered 51 Breccia Impact 47 T ourmalineCemented 21 V olcanic 47 C Calcite Angel Wings 26 Cavern Crystals 46 Cemented Sand Crystals 50 Crystals Sand 27 Crystals Scalenohedral 24 Filled Geode Stibnite and 49 Fluorite and 32 Green Stalactitic 19 Rhombohedron 32 T win Scalenohedral 29 Carved Elephant 26 Cask 26 Casts Dinosaur Footprint 28 Dinosaur Skull 33 Dinosaur T rack 33 Celestite 21 Crystals Blue 32 White Crystals with Native Sulfur 31 Ceremonial Gavel 26 Chalcedony in Petrifed W ood 40 Chalcocite 27 Chalcopyrite and Galena on Dolomite 28 Chert and Dolomite 17 21 Chrysotile Asbestos 25 46 Cinnabar 28 49 Colemanite 24 Colorado Blue Spruce 9 Copper Copper Dragon 23 Malachite on Native 23 Native 23 29 40 Coral Gem Coral 29 Modern Branched Coral 50 Fan Coral 48 Solitary Coral 40 T abular Lobed Coral 50 D Deep Sea Drill Core 25 Dinosaur Footprint 28 47 Footprints 51 Skull 33 T rack Natural Cast of 33 Dolomite Marble Spheres 20 Door Pulls 11 Doris Malkin Curtis Memorial Plaque 9 Drill Core Deep Sea 25 E Elephant 17 26 Epidote 48 F Fluorite 42 and Calcite 32 Linarite on 23 Fossil Ammonite Impression 24 Belemnites 49 Brachiopod 21 Fish 37 39 Graptolites 49 Nautiloid 47 Plants 26 Fossilized Shark Helicoprion T eeth 40 Whale V ertebra 38 Fountain 10 Franklinite 29 Fulgurite 25 G Gabbro 38 Galena 28 48 Crystals 23 GarnetBearing Rock 10 Gavel 26 Gem Coral 29 Giant Selenite Crystal 33 Gneiss Baltimore 45 Cobble 45 Goethite 25 29 30 Granite 11 Boulder 15 Graptolites Fossil 49 Green Stalactitic Calcite 19 I Impact Breccia 47 Indicolite T ourmaline 32 Intertidal Sand Bodies 51 J Jadeite 27 Jasper 26 JJ Y oung Drawings 41 L Leaf Impression 27 LichenCovered Branches 51 Limestone Magnetite in Metamorphosed 31 Limonite 31 Linarite on Fluorite 23 L yons Sandstone 22 M Magnetite in Metamorphosed Limestone 31 Malachite 23 27 31 Mercury Ore 30 49 Migmatite 32 Miserite with W ollastonite 15 Mount Everest 3D Model 45 Aerial Photo 37 Orthophoto Map 45 Mount St Helens 3D V iews 37 38 V olcanic Bomb 37 Muscovite 19 Inde x of Specimens