 | | Report (issue) | | I s { IOWA ft 7 ■■• A * i . ;» \ P* A 7-. ■«*"V ' r * < •+ ' 1 ’ T, / • k’-/ 5...i S' s I . " * • * «r- ‘ ; ' Geologist, Iowa Geological Survey ' .*4** =»*' I Paul*J. Horick...Jithill * v'v* l* Iowa Geolo^ica^Survey Educational Series 2 V . - -■' ( J Iowa Geological Survey...Educational Series 2 THE MINERALS OF IOWA by Paul J. Horick Geologist Iowa Geological Survey edited by Otto...STATE OF IOWA 1974 Library of Congress Catalog Card Number: 74-620075 Available from the Iowa Geological |  | | Journal (issue) | | and Fossils o n Stamps Robert G. Myers 208 Smoky Quartz in the Libert y Hill Pegmatite Dick Dayvault...CZECHOSLOVAKlA July 1, 1974 1 c amethyst 2 c agate 3 c quartz 4 c niccolite 5 c moss agate 7 c agate 10 c stilbite...diamonds 25 c chrysotile 35 c jasper 50 c moss quartz 1 r citrine 2 r chalcopyrite August 8, 1968 30...erythrite JO pf fluorite 15 pf galena 20 pf smoky quartz 25 pf calcite 50 pf silver February 22, 1972...Decen1ber 17, 1974 10 pf banded jasper 15 pf smoky quartz 20 pf topaz 25 pf amethyst 35 pf aquamarine |  | | Journal (issue) | | and Fossils o n Stamps Robert G. Myers 208 Smoky Quartz in the Libert y Hill Pegmatite Dick Dayvault...CZECHOSLOVAKlA July 1, 1974 1 c amethyst 2 c agate 3 c quartz 4 c niccolite 5 c moss agate 7 c agate 10 c stilbite...diamonds 25 c chrysotile 35 c jasper 50 c moss quartz 1 r citrine 2 r chalcopyrite August 8, 1968 30...erythrite JO pf fluorite 15 pf galena 20 pf smoky quartz 25 pf calcite 50 pf silver February 22, 1972...Decen1ber 17, 1974 10 pf banded jasper 15 pf smoky quartz 20 pf topaz 25 pf amethyst 35 pf aquamarine |  | | Book | | ADULARIA Adu Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187...--and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE MYERS --and...Allgood, J. Pradenas: Gold occurrences in Tuolumne County, California 18:41-45, 18:62-64 --with W. H. Wilkinson |  | | Book | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...AFRICA widely in Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...collected sharp, black, flattened hexagonal ilmenite crystals to 7 .5 cm in matrix of massive quartz from these |  | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles , CA Joseph A. Mandarino...suit (not to mention the Wright Brothers' Kitty Hawk flyer) . It's the artifacts, stupid. Bill Smith...diamond, corundum) 2. Quartz-hard, can be filed with difficulty (Examples: garnet, quartz) 3. Feldspar-hard...scratch quartz (Examples: diamond, corundum) 2. Substances that scratch glass (Examples: quartz, peridot... Calcite 4. Fluorite 5. Apatite 6. Feldspar 7. Quartz 8. Topaz 9. Corundum 10. Diamond Table 1. Collation |  | | Journal (issue) | | Conklin Famous mineral localities: the Gillette quarry, Had dam Neck, Connecticut . . . . . . . . . ....Tuolumne County; 3.18 cm (36) Tuolumne County; 2.54 cm, 1.9 cm (39) Seaton mine, Amador County; 12.07 cm...Dorado County; 1.5 cm (55) Grit mine, El Dorado County; 8.26 cm (60) Grit mine, El Dorado County; 4.76...Dorado County; 4.29 cm (62) Grit mine, El Dorado County; 2.22 cm (63) Grit mine, El Dorado County; 2.54...WEW Figure 3. Gold from the Grit mine, El Dorado County, California: shown on the facing page as no. 60 |  | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...Pierre-Nicolas Schwab Orleans , France The Trimouns Quarry, Luzenac, Ariege, France ........................IIMORIITE-(Y) crystal, 2 mm-All from the Trimouns talc quarry near Luzenac, France (see the article beginning...INTRODUCTION The Riddarhyttan ore field is situated in the county of Vastmanland, south-central Sweden, about 70...rich zone 187 Figure 1. Location map showing the county of Vastmanland and the Riddarhyttan ore field. |  | | Journal (issue) | | Cuts FORMS and SHAPES In any slabbed stone - jade, quartz, agate. glass. etc. Faster and easier than grinding...remains . .. $2.00 lb. GREEN QUARTZ WITH PYRITE - This is a very deep green quartz with some pyrite inclusions...golden chatoyant tigereye and the chocolate brown or black hematite Is really striking. Some pieces also have...nice lime green, but all of it contains white or black Inclusions within. It cuts an Interesting stone...only . • . $2.00 per lb. PEACOCK OBSIDIAN - This black material contains green or purple color when cut |  | | Journal (issue) | | Anhaeusser Minerals of the Linwood mine, Scott County, Iowa ............. 231 by P. L. Garvin & D. M. Crawford... . . . . . . . . . . . 282 COVER: FLUORITE on quartz, 14 x 18 cm, from Mont Blanc, Chamonix, France...plastic boxes came in and showed them an opaque black, 1.25-inch cubical plastic box. This box was eventually...Africa today. Frontier wars with southward-migrating black tribes occurred sporadically but, nonetheless ,..."Eersteling" farm, showed some gold-bearing vein quartz to Button, who then arranged to prospect the farm |
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