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Minerals and Gemstones of Nebraska: A Handbook for Students and Collectorsand Colle
digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1001&context=conservationsurvey
TABLE OF CONTENTS
Page Page
Introduction
What Are Minerals? What Are Rocks? What
Are Gemstones?
What is Mineralogy? .
What Can Minerals Tell Us? .
Minerals and Geologic Time
Minerals as Environmental Indicators
Minerals as Resources
Where are Minerals Found?
Collecting Courtesy .
Tools for Collecting Minerals.
Care of Tools.
Tips on Collecting Minerals
Safety Rules
Preparation of Specimens.
Mineral Identification
Physical Properties
Cleavage
Hardness
Luster
Streak.
Specific Gravity
Form
Color
Tenacity
Fluorescence
Chemical Properties
Chemical Composition
Taste
Chemical Tests
Crystallogra ph y
Common Nebraska Minerals
Amphibole
Ankerite
Aragonite
Autunite
Barite
Bauxite
Biotite
Calcite
Carnotite
Celestite.
Chalcedony
Chalcopyrite
Chalk
Chert
Chlorite
Coal
Copper
Dolomite
Epidote
Feldspar.
Fluorite
Geodes
Goethite
Gold
Gypsum
Halite
Halotrichite
Hematite
Jade
Limestone
Limonite
Magnetite
Marcasite
Melanterite
Meteorites
Mica
Muscovite
Opal
Onyx
Orthoclase, Plagioclase
Pyrite
Pyrolusite
Pyroxene
Quartz
Sabugalite
Sand Crystal
Selenite
Septarians
Siderite
Sphalerite
Sulfur .
Turquoise
Uranium Minerals
Vivianite
Gem and Ornamental Stones from Nebraska
Introduction
Type 1. Gem and Ornamental Stones Indigenous
to Nebraska
Type II. Gem and Ornamental Stones Transported
into Nebraska by Streams Originating in Adjacent
vVestern States
Type III. Gem and Ornamental Stones Having
Been Transported into Nebraska from Northern
Sources by Glaciers.
Common Nebraska Gemstones.
Agate, Type II Occurrences.
Fortification or "Fairburn" Agates.
Prairie Agates .
Moss Agates
Agate, Type III Occurrences
Lake Superior Agates
Moss Agates
Chalcedony, Type I Occurrences
Vein Chalcedony and Blue Chalcedony.
Chalcedony, Type II Occurrences.
Lard Agate
TABLE OF CONTENTS-(Continued)
Page
Chert, Type I Occurrences 59
Pennsylvanian, Permian, and Cretaceous Chert 59
Chert, Type III Occurrences . 60
Miscellaneous Chert 60
Coral, Type I Occurrences 60
Horn Coral 60
Coral, Type II Occurrences.. 62
Colonial Coral 62
Coral, Type III Occurrences . 62
Horn and Colonial Coral . 62
Feldspar, Type II Occurrences. 62
Labradorite, Moonstone 62
Garnet, Type II Occurrences. 62
Hematite 62
Ivory 62
Jade, Type II Occurrences. 63
Nephrite 63
Jade, Type III Occurrences . 63
Nephrite 63
Jasper, Type II Occurrences 63
Jasper, Type III Occurrences 64
Page
Onyx, Type I Occurrences.......................... 64
Opal, Type I Occurrences .... 64
Pearl and Mother-of-Pearl 65
Petrified Wood and Plants, Type I Occurrences 65
Black Wood 65
Opalized Wood 66
Petrified Wood and Plants, Type II
Occurrences . .. .. . . 66
Cycadophytes . 70
Tempskya Ferns 70
Petrified Wood and Plants, Type III
Occurrences . 71
Quartz, Type II Occurrences 71
Quartz, Type III Occurrences. 71
Topaz . .. 72
Unakite 72
Miscellaneous Heavy Minerals 72
Selected References . 72
Appendix I 75
Appendix II 78
Glossary 79