F Feldspar [38], [39], [43], [45], [46], [54], [74] Festus [33] Fire clay [19], [24], [73] Flat River [60] Flint [14], [34] Flint fire clay [26], [73] Fool’s gold [14], [51] Fossils [12], [22], [35], [36], [52], [53], [69] Franklin County [27] Fredericktown [60]
G Gabbro [13], [38], [44], [48], [73] Galena [59], [65], [74] Gasconade County [26], [27] Geiger Counter [66] Geode [42], [67] Geological Survey, Missouri [6] Glacial boulders and deposits [40], [48], [55], [65], [74] Glass “tiff,” barite [61] Gneiss [54], [73] Gold [51], [53], [65] Granite [16], [31], [38], [43], [46], [47], [49], [53], [54], [73] Graniteville [39], [43] Gypsum [19], [49], [61], [62], [63], [74]
H Hardness [6], [19], [65] Heavy spar [61] Hematite [56], [66], [74] Hermann [33] Houston [62] Hydrochloric acid [10]
I Igneous rock [73] Iron band diaspore [58] Iron County [39], [45], [58] Iron Mountain [56] Iron ore [56], [57] Isinglass [44]
J Jack zinc ore [60] Jasper [38] Jefferson County [62] Joplin [60] Joplin dolomite [19]
K “Kaoleen” [37] “Keel” [56] Klondike [33]
L Lafayette County [32] La Grange [37] Lava flow [46], [73] Lead ore [59] Lexington [33] Lime [13] Limestone [10], [22], [53], [55], [59], [62], [66], [73], [74] Limestone, chemical, composition [12], [23] Limonite [53], [56], [57], [66], [74] Lincoln County [27] Loess dolls, -kinder [66]
M Madison County [39], [45], [58] Magnesium carbonate [12] Manganese ore [58] Marble [15], [55], [73] Marcasite [49], [51], [53], [57], [74] Maries County [27] Mark of mineral [6], [56] Metamorphic rock [15], [21], [55], [73] Metatorbernite [65] Meteorites [64] Mica [38], [39], [44], [53], [74] Microcline feldspar [44], [74] Miller County [62] Millerite [68] Mineral, definition [5], [74] Missouri Geological Survey [6], [59] Missouri School of Mines and Metallurgy [6] Moberly [33] Moniteau County [62] Morgan County [62] Muriatic acid [10] Muscovite mica [44]
N Nickel [64] “Niggerheads” [32], [48]
O Ochre [58] Olivine [65] Onyx [16], [42] Oolites [27], [29], [66] Orthoclase feldspar [44], [74] Osage County [26], [27] Ozora marble [15]