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Gem, Mineral, Fossil & Jewelry Dealers Gem, Mineral, Jewelry, & Fossil Vendors Accent on Nature Columbus, OH Amber America Bath, PA Cincinnati Arrowwood Minerals Lexington, VA Aurora Mineral Corp. (wholesale) Freeport, NY Bernie’s Gems Seneca, SC © Butterflies by God Maryland Heights, MO GeoFair 2019 Carved Opal and Obsidian Austin, TX Cecilia Gems with a Smile Columbus, OH 54th Annual Chuck Warren Fossils Hillsdale, MI The Crystal Circle Morrow, OH Gem, Mineral, Fossil & Jewelry Designs Mining & Lapidary Belle Haven, VA Show of Greater Cincinnati Dwarven Stonecraft & Lapidary Nashville, TN Exotic Minerals of Russia Princeton Junction, NJ www.geofair.com Galaxy Marketing Douglasville, GA Gem Miracles Maineville, OH Gems by Celestial Dancer Carmel, IN May 4 Gems of the Ozarks Walnut Ridge, AR Saturday GeoRarities.com Cincinnati, OH 10 am to 6 pm Heads Up Trading Co. Cincinnati, OH Heart Vision Canton, MI May 5 Hollow Mountain Industries Louisville, KY Sunday Howard Schlansker (wholesale) Marshfield, MA 11 am to 5 pm Import Specialist West Chester, OH Ken and Pam Samulski South Bend, IN Kentucky Rock Shop Crittenden, KY Larimar International Amboy, IL 70 Displays featuring Mannings Rock Shop Troy, OH Mearth Star Sunman, IN Colorful Crystals & Midwest Minerals (wholesale) Tucson, AZ Fascinating Fossils Minerals Plus Dowagiac, MI Mountain Minerals International Louisville, CO Natural Selection Crystals Milwaukee, WI Illustrated Earth Science Programs North Lake Trading Avon Lake, OH Saturday, May 4 One of a Kind Jewelry Designer Cabs Branson, MO The Causes of Color in Crystals PhatRocks Knoxville, TN Pheasant Run East Troy, WI The Architecture of Echinoderms The Prospector’s Shop Ligonier, PA Sunday, May 5 Quest Crystals Warren, OH A Rainbow of Gems & Minerals R&D Xtals Cleveland, OH Riverview Gems and Gifts Bandon, OR Building a Dinosaur Rock Candy Minerals Springfield, IL 9743 Roy Hurlburt Minerals St. Louis, MO - Saga Minerals Mahomet, IL Savage Creations Indianapolis, IN Sharonville Sharks Underground Louisville, KY Convention Center The Silverlady II Cincinnati, OH Sunshine’s Creative Designs Trumansburg, NY 11355 Chester Road Terrestrial Treasures Grand Junction, CO Sharonville, Ohio 45246 Top Gem Minerals (wholesale) Tucson, AZ www.geofair.com for directions Unique Gems & Lapidary Lakemont, GA Unique Russian Mineral Fort Lee, NJ Universal Fossils Mechanicsville, VA 5562 Liberty Woods Drive Liberty Twp, Ohio 45011 Velma’s Crafts Gate City, VA Cincinnati Mineral Society FREE PARKING Weinrich Minerals Grover, MO FREE IDENTIFICATION “Ask the Expert” DISPLAYS: Gems, Minerals, Fossils & Jewelry Fossils, Minerals, Rocks & Meteorites: from over 70 public and private collections Cincinnati Saturday and Sunday 11 to 3 Featuring Colorful Crystals and Gemstones and Jewelry Fascinating Fossils © Saturday and Sunday 1 to 3 Museums: A.E. Seaman Mineral Museum GeoFair 2019 ILLUSTRATED EARTH SCIENCE PROGRAMS Ben E. Clement Mineral Museum SATURDAY, MAY 4 Cincinnati Museum Center 1 - 2 pm – The Causes of Color in Crystals Cranbrook Institute of Science Sharonville Convention Center Dr. Carl Francis, Maine Mineral & Gem Museum Indiana State Museum 11355 Chester Road Limper Geology Museum, Miami University 3 - 4 pm – The Architecture of Echinoderms Maine Mineral and Gem Museum Sharonville, Ohio 45246 Dr. Colin Sumrall, University of Tennessee Wayne State University Geology Museum DIRECTIONS FROM I-75 Wittenberg University Geology Department Northbound traffic take Exit #15 (Sharon Road); turn 4:30 pm - Friends of Mineralogy Midwest Chapter Organizations: left on Sharon Road, passing under I-75. Southbound traffic Dayton Gem and Mineral Society take Exit #15 and turn right on Sharon Road. SUNDAY, MAY 5 Greater Cincinnati Lapidary & Faceting Society All traffic go one block West to Chester Road and turn right. 1 - 2 pm – A Rainbow of Gems & Minerals Ohio Geological Survey The Convention Center is located ½ mile on the left. Jeff Scovil, Professional Photographer, Phoenix, AZ Private Collections & Show Vendors DIRECTIONS FROM I-71 Northbound traffic from Kentucky take I-75 North and 3 - 4 pm – Building a Dinosaur HOBBY MAGAZINES follow the above directions from I-75. Ohio traffic go West on I-275 and follow the directions below. Dan Cooper, Professional Fossil Collector, Ohio Mineralogical Almanac Moscow, Russia DIRECTIONS FROM I-275 Rocks & Minerals Philadelphia, PA East- and Westbound traffic follow I-275 around the north SWAP for MINERALS, FOSSILS & ROCKS The Australian Journal of Mineralogy Australia side of the outer belt and take Exit I-75 South. Go The swap is open from 10 to 6 on Saturday and one exit south to Sharon Road (Exit #15). Turn right on from 11 to 4 on Sunday. Material must be swapped HEADQUARTERS HOTEL Sharon Road and go one block to Chester Road, then turn or purchased with “swap dollars” available at the Fairfield by Marriott, 11440 Chester Road, right. The Convention Center is located ½ mile on the left. swap registration desk. Sharonville, Ohio 45246 (across the street and FREE PARKING north of GeoFair). To reserve call 513 / 842-9112 Admission GEOLOGY EDUCATION CENTER and ask for the special GeoFair rate (after April 20 Adults........$9 Two-day pass........$12 Learn more about minerals, rocks and fossils, or receive the same rate if space available) Children....$3 Uniformed Scouts free Scout Merit Badge assistance at the . Scout leaders pay adult rates Education Center operated by GeoFair and geology GEOFAIR SPONSORS www.geofair.com Teachers free with ID and paid adult companion students and educators from the University of GeoFair 2019 is co-produced by two Cincinnati Cincinnati and Miami University, Middletown. geoscience organizations that welcome new $2 OFF ONE ADULT ADMISSION members. Visit the websites for more information FREE MINERAL COLLECTION FOR KIDS or stop by the GeoFair Information Booth. © GeoFair 2019 Everyone under age 12 can select mineral specimens May 4 & May 5 and begin their own collection. Mineral specimens Dry Dredgers – an organization of amateur Sharonville Convention Center are compliments of www.geofair.com. paleontologists & fossil collectors. 11355 Chester Road www.drydredgers.org Sharonville, Ohio 45246 GEODE CRACKING Cincinnati Mineral Society – an organization Visit the geode cracking booth and decide if you of amateur mineralogists & mineral collectors. FREE PARKING 2019.3 want to open a quartz crystal-lined geode. www.mineralsociety.org .
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  • Download PDF About Minerals Sorted by Mineral Name
    MINERALS SORTED BY NAME Here is an alphabetical list of minerals discussed on this site. More information on and photographs of these minerals in Kentucky is available in the book “Rocks and Minerals of Kentucky” (Anderson, 1994). APATITE Crystal system: hexagonal. Fracture: conchoidal. Color: red, brown, white. Hardness: 5.0. Luster: opaque or semitransparent. Specific gravity: 3.1. Apatite, also called cellophane, occurs in peridotites in eastern and western Kentucky. A microcrystalline variety of collophane found in northern Woodford County is dark reddish brown, porous, and occurs in phosphatic beds, lenses, and nodules in the Tanglewood Member of the Lexington Limestone. Some fossils in the Tanglewood Member are coated with phosphate. Beds are generally very thin, but occasionally several feet thick. The Woodford County phosphate beds were mined during the early 1900s near Wallace, Ky. BARITE Crystal system: orthorhombic. Cleavage: often in groups of platy or tabular crystals. Color: usually white, but may be light shades of blue, brown, yellow, or red. Hardness: 3.0 to 3.5. Streak: white. Luster: vitreous to pearly. Specific gravity: 4.5. Tenacity: brittle. Uses: in heavy muds in oil-well drilling, to increase brilliance in the glass-making industry, as filler for paper, cosmetics, textiles, linoleum, rubber goods, paints. Barite generally occurs in a white massive variety (often appearing earthy when weathered), although some clear to bluish, bladed barite crystals have been observed in several vein deposits in central Kentucky, and commonly occurs as a solid solution series with celestite where barium and strontium can substitute for each other. Various nodular zones have been observed in Silurian–Devonian rocks in east-central Kentucky.
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    Illinois State Museum Geology Online – http://geologyonline.museum.state.il.us Project Geode Grade Level: 7-8 Purpose: To predict the appearance of a geode’s internal structure based on its physical characteristics, such as mass and density. Suggested Goals: Students will collect accurate data about the physical characteristics of a geode and determine a method for predicting the internal structure. Objectives: As a result of this lesson, students will be able to: 1. Use scientific equipment to collect data related to mass, volume, and density. 2. Form a hypothesis about a geode’s interior structures based on collected data. 3. Identify the common minerals found in Illinois geodes. Time Required: 1 - 2 class periods Group Size: Individually or by working in teams of 2-3 students Background: Geodes are spherical bodies that may be filled with layers of minerals and/or lined with crystals, such as quartz, calcite, pyrite, and dolomite. Geodes form as mineral-rich water is trapped inside an outer core of solid rock, including a layer of chalcedony. As the temperature and pressure changes, the mineral matter inside the geode precipitates to form a crystal lining. Some geodes are filled completely, while others are hollow with a beautiful display of crystals. Does the geode provide clues as to its internal structure? For this experiment, challenge your students to document the physical characteristics of a geode and make a prediction as to the internal appearance of a geode. Materials/Preparation: Set of geodes for display (already cracked open to show crystal structures) 8-10 unbroken geodes* (Labeled using 1,2,3, etc.) Triple-beam balances or electronic scales Overflow cans and graduated cylinders (or other method to measure volume) Measuring tapes Safety goggles Hammer & Chisel Optional: Classroom display with minerals that are often found inside geodes, such as quartz, dolomite, calcite, etc.
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  • Geodes: a Look at Iowa's State Rock
    Iowa Science Teachers Journal Volume 26 Number 1 Article 6 1989 Geodes: A Look at Iowa's State Rock Brian J. Witzke Follow this and additional works at: https://scholarworks.uni.edu/istj Part of the Science and Mathematics Education Commons Let us know how access to this document benefits ouy Copyright © Copyright 1989 by the Iowa Academy of Science Recommended Citation Witzke, Brian J. (1989) "Geodes: A Look at Iowa's State Rock," Iowa Science Teachers Journal: Vol. 26 : No. 1 , Article 6. Available at: https://scholarworks.uni.edu/istj/vol26/iss1/6 This Article is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Iowa Science Teachers Journal by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. GEODES: A LOOK AT IOWA'S STATE ROCK Brian J. Witzke Research Geologist 123 North Capitol Street Iowa City, Iowa 52242 Iowa geodes have long been objects of curiosity, their sparkling interiors containing some of the most beautiful crystals to be found anywhere in the Midwest. Although geodes are known from many localities around the world, one of the most productive and famous collecting regions is encompassed within a 35-mile radius of Keokuk, Iowa. Rock collectors commonly refer to geodes from this region as "Keokuk geodes." In keeping with the world-renowned status of the Iowa geodes, the Iowa General Assembly declared the geode as the official "State Rock" in 1967. The word "geode" is derived from the Latin meaning "earthlike," a reference to their rounded shape.
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  • Discovery of Agate Geode and Nodules at Mount Conner, Semporna, Sabah Elvaene James1,2,*, Hennie Fitria W
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