Table of Contents
Acknowledgments vii
Introduction 1
Rockhounding Basics 4
Geology of Wisconsin 12
Natural Resources 17
How to Use This Guide 23
Map Legend 26
Eastern Ridges and Lowlands
1 Carol Beach Rocks 28
2 Southport Park Beach Concrete 31
3 Racine Quarry Silurian Fossils 33
4 Wind Point Beach Silurian Fossils 37
5 Estabrook Park Devonian Fossils 39
6 Grafton Quarry Silurian Fossils 43
7 Oakfield Ledge Quarry Crystal Vugs 46
8 Wequiock Falls Ordovician Fossils 50
9 Sturgeon Bay Silurian Coral Fossils 53
10 Sturgeon Bay Quarry Park Silurian Fossils 56
11 Kangaroo Lake Wayside Park Silurian Fossils 59
Western Upland
12 Janesville Ordovician Fossils 62
13 Albany Glauconitic Sandstone 65
14 Monticello Sandstone 67
15 New Glarus Fossils 69
16 Mount Horeb Fossils 71
17 Mineral Point White Sandstone 74
18 Linden Lead Mine Calcite and Sphalerite 77
19 Linden Pyrite and Chalcopyrite 80
20 Mifflin Ordovician Fossils 82
21 Shullsburg Chert 84
22 New Diggings Calcite 89
23 Hazel Green Pyrite and Sphalerite 92
24 Platteville Fossils 95
25 Dickeyville Ordovician White Sandstone 99
26 Dickeyville Ordovician Fossils 102
27 Fennimore Ordovician Fossils 104
28 Millville Ordovician Fossils 107
29 Plum Creek Chert 109
30 Walker Hollow Road Chert 112
31 Boscobel Dolostone-Sandstone Quarry 114
32 Reads Creek Chert 116
33 Ableman's Gorge Quartz Crystals 119
34 Arcadia Sandstone Concretions 123
35 Hanley Road Vuggy Dolostone 127
36 Little Falls Dam Cambrian Fossils 130
Central Plain
37 Redgranite Granite Quarry 134
38 Necedah Bluff Cambrian Sandstone and Quartz Crystals 138
39 Mauston Cambrian Sandstone Pseudo Fossils 141
40 Elroy Banded Cambrian Sandstones 144
41 Tunnel City Sandstone 147
42 Saddle Mound Trace Fossils and Sandstone 149
43 Black River Falls Iron Mine 152
44 Black River Falls Precambrian Granite 155
45 Wildcat Mound Giraffe Rock 157
46 Big Falls Hornblende Gneiss 161
Northern Highland
47 Quiver Falls Precambrian Metabasalt 166
48 Pemebonwon River Precambrian Metabasalt 169
49 Long Slide Falls Precambrian Greenschist 171
50 Pembine Tonalite 174
51 Niagara Railroad Cut Precambrian Granite 176
52 Bradley Iron Mine Hematite and Iron Formation 179
53 Pine River Power Plant Slate 181
54 LaSalle Falls Black Tourmaline 185
55 Pine River Red Tourmaline 188
56 Florence Iron Mine 192
57 Mountain Precambrian Feldspar 196
58 Quartz Hill Precambrian Quartz Crystals 200
59 Irma Hill Cambrian Sandstone 203
60 Little Chicago Precambrian Metabasalt 207
61 Stettin Precambrian Moonstone 210
62 Stettin Precambrian Feldspar 214
63 Wausau Precambrian Gneisses and Granites 216
64 Rib Mountain Precambrian Quartzite 219
65 Rib Mountain Rotten Granite 222
66 Marathon Big Rib River Park Granite 224
67 Jim Falls Gneiss and Granite 226
68 Powell Precambrian Kyanite 230
69 Montreal Mine Hematite and Magnetite 233
70 Plummer Mine Magnetite and Hematite 237
71 Saxon Falls Zeolites in Precambrian Basalt 240
72 Mellen Rainbow Slaty Turbidites 243
73 Ballou Creek Iron Formation 247
74 Berkshire Iron Mine Hematite and Ruins 250
75 Mellen Spotted Cow Rock 253
76 Mellen Iron Formation 255
77 Kornstead Road Precambrian Gabbro Quarries 257
78 Mineral Lake Tower Iron Formation 260
79 Grandview Marble Quarry 263
80 Highway 27 Precambrian Basalt 266
81 South Range Precambrian Basalt 269
Lake Superior Lowland
82 Amnicon River Beach 274
83 Saxon Harbor Beach 277
84 Little Girls Point Beach 281
References Cited 283
Site Index 287
About the Author 288
