Map identifies locations of: gold and silver, acinolite, agate, amazonite, amethyst, apache tears, apatite, aquamarine, aragonite, argenite, azurite, barite, beryl, bornite, calcite, cerussite, chalcedony, chalcopyrite, chlorargyrite, chlorargyrite, chrysocolla, chrysoberyl, corundum, covellite, cuprite, enargite, epidote, feldspar, ferberite, fluorite, fossil, garnet, geodes, hematite, heubnerite, jasper, lepidolite, limonite, magnetite, malachite, marcastite, muscovite, natrolite, opal, orthoclase, petrified wood, phenakite, pyrite, quartz, rhodochrosite, rhodonite, sapphire, scheelite, siderite, smithsonite, sphalerite, spodumene, stephanite, stibnite, sylvanite, thomsonite, topaz, tourmaline, turquoise, and zircon.
The Deluxe Moh's Hardness Pick Set now comes in two case types. The wooden case is small enough to carry and the top screws into the base to make a perfect desk stand. The plastic case is longer but the thinner size makes it easier to carry in your field tool set.Hardness is an important and quantifiable physical characteristic of a mineral and in your effort to identify an unknown mineral, the hardness, if known, combined with other properties, can narrow your search to just a handful of possibilities. Simply scratch a smooth surface of your unknown mineral with the picks of various indicated hardness. As an example, if a No. 5 pick scratches the mineral, but a No. 4 pick does not, then your mineral hardness is 4.5. Then compare this against a table of minerals listing hardness values to aid in identifying the unknown mineral.
You'll spend hours studying this educational chart!! A Correlated History of Earth v8 is a full-color educational wallchart documenting 4.5 billion years of earth's natural history. Each column is a timeline from ancient times to recent. Included are plate tectonic maps, mountain building events (orogenies), major volcanic episodes, glacial epochs, all known craters from asteroid and comet impacts, over 100 classic fossil localities from around the world, fossil Ranges of plants, invertebrates and vertebrate lifeforms, and major extinction events as revealed by the fossil record. Also evident on this chart are the "cambrian" "explosion" of animal phyla and the juxtaposition of reptiles and mammals across the Cretaceous/Tertiary (K/T) boundary. Hundreds of illustrations add a striking visual dimension to the data.
New Version 8, Published 2013. Size 38"x 28"
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