Minerals and Rocks of Wyoming: A Guide for Collectors, Prospectors, and Rock HoundsA Guide for Collectors, Prospectors, and Rock Hounds |
Common terms and phrases
agate alteration andalusite appearance associated Basin blue brown calcite Canyon chalcedony chalcopyrite characteristics and crystal chemical cleavage coal collected Color common contain copper corundum Creek crystal habit Crystal System dark deposits diamond distinct district example exhibit faces feldspar field Figure Formation forms fracture garnet Geological Survey gold grains Granite gray green Green River hardness Hausel heft hematite hexagonal Hills identified igneous rock iron jade kimberlite known Komatiite kyanite lamproite Laramie Leucite light limestone limonite Localities Luster malachite masses massive material Medicine Bow Mountains metallic metamorphic rocks mica mineral mining Mountains nephrite occurs olivine oxide pegmatites photograph Physical characteristics placer powder produce pyrite quartz Range rare relatively reported result River Basin sandstone schist sedimentary sericite Sierra Madre similar South Pass specimens Springs streak surface texture transparent typically uranium variety veins Vitreous volcanic Wind River Wyoming yellow