Chapter 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

P
Pacific 33, 41
Paint ore 58
Paleontology 71
Paris 33
Petrified wood 35, 43, 69
Petroleum 71
Phelps County 26, 27
Phenocrysts 46
Pilot Knob 56
Plagioclase feldspar 44, 49, 74
Plaster of paris 63
Plastic fire clay 26
Polish on marble and granite 16
Pop-corn flint fire clay 26
Porphyry 31, 40, 44, 45, 53, 73
Porphyry, chemical composition 40
Potosi 37
Pyrite 14, 49, 51, 52, 53, 57, 58, 63, 66, 74
Pyroxene 49, 74

Q
Quarry 14
Quartz 30, 38, 39, 40, 41, 45, 49, 54, 65, 68, 74
Quartzite 32, 55, 73

R
Radioactivity 66
Reynolds County 58
Rhyolite, rhyolite porphyry 45, 71, 73
Ripple marks 33
Rock crystal 42
Rock, definition 5, 73
Rock wool 13
Rose quartz 42
Rosin jack zinc ore 60
Rosin spar zinc ore 60
Ruby jack zinc ore 60

S
Sampling rock or ore 15, 59
Sand 14, 30
Sandstone 30, 41, 43, 53, 55, 66, 73
Sandstone, chemical composition 23
Satinspar gypsum 63
Sedimentary rock 72, 73
Selenite gypsum 63
Shale 19, 20, 24, 50, 53, 55, 66, 73, 74
Shale, chemical composition 23
Shannon County 58
Silica 35, 43, 66
Silver 59, 65
Silver Mines 65
Six-sided crystals 16, 41
Slate 21, 50, 55
Soapstone 21
Soil sweetening 13, 14, 20
Sphalerite 60, 74
“Sponge” limestone rock 13
Stalactites 16
Stalagmites 16
State Geologist, Geological Survey 6, 24, 51, 59
St. Francois County 39, 45
St. Louis County 26
St. Peter sandstone formation 41
Ste. Genevieve 65
Streak of mineral 6, 56
Sulphur 51
Sulphuric acid 10, 53, 63

T
Texas County 62
Tiff 16, 61
Travertine 16, 73
Tripoli 37, 43
Tyuyamunite 65, 74

U
University of Missouri Geology Department 6
Uranium Minerals 65, 66