 | | Journal (issue) | | ............................... (0PPER•STAINED QUARTZ FROM ARIZONA ....................................cutting rate about four times. It is also used on diamond saws. It will certainly be ...ASSOCIATION lock Vol. 20, No. 6 ardally AMETHYST - SMOKY QUARTZ ritaIn Northern New Hampshire •eek IJU• ,ubBuPril...10; i8- It TOPAZ By HAROLD J. VERROW Hartford, Connecticut 00 in.as itor Whole No. 167 Introduction...localities where a large quantity of amethyst and smoky quartz, and a smaller amount of topaz have been found |  | | Book (edition) | | describes sites under of the nearest town and county. and the many maps included book contain such...*D * D } '<&*=> 4B^ Diamond M Tourmaline ^P Ruby. Sapphire O Quartz crystal ^J^ Garnet __...symmetry of crystals, the spectacular glitter of diamond have evoked admiring gasps of soft pleasure....known Mohs' scale. (See Table from equal; the diamond, as this scale are far Mohs' Hardness Scale...with respect to one another. gem minerals The quartz gems, such as amethyst, form crystal prisms with |  | | Report (volume) | | the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best...stone has only one or two of these qualities. The diamond, emerald, ruby, and sapphire are considered precious...blue, rose, green, and true canary yellow in the diamond; pigeon-blood red in the ruby; cornflower blue...establishing the price of a gem stone. Such gems as the diamond and ruby are rare, in addition to being beautiful...Apatite . 6. 7. 8. 9. 10. Orthoclase Quartz Topaz Corundum Diamond The numbers preceding each mineral |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...DEMCO 38-297 KEY 4& Diamond M Tourmaline fQl Ruby, O Sapphire Quartz crystal 'y^ Garnet —...and California; emerald in North Carolina, a big diamond or two in Arkansas, opal in Idaho, and so on. Old...from Derbyshire or, perhaps, a pyramid of smoky quartz from Cumberland. The next it may be rock crystal...The steps on this scale are far from equal; the diamond, for example, is rated on the scale as 10, but |  | | Journal (article/letter/editorial) | | arch of the Palermo mine, North Groton, Grafton County. Rob Lawrence photo, courtesy Bob Whitmore. 242...2015 LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz (crystals), sillimanite...(lodestone), nepheline, quartz (amethyst). Laconia area: psilomelane, quartz (crystals), sphalerite,...occurrence is particularly noteworthy for Carroll County Albany, Blackberry Crossing (includes the Moose...(microcrystals), genthelvite* (microcrystals), microcline, quartz* (smoky, crystals), siderite, siderophyllite, zinnwaldite |  | | Book | | Catalog Card Number: 74-1276 The pictures of gold-in-quartz, smithsonite, stilbite, and wulfenite on the front...learn that gravel beds are rich in such minerals as quartz, feldspar, mica, garnet, tourmaline, magnetite...Schists often contain feldspar, garnet, mica and quartz. With sapphires are often found associated an abundance...oxide. Chalcedony, one of the common varieties of quartz, was formed in the same way. Pegmatites and Hematites...contains as its principal com¬ ponents feldspar, quartz and mica it is known as pegmatite. Most of our |  | | Book | | HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...may be able to buy specimens. map of Keweenaw County. Mich- Part of the U.S. Geological Survey topographic...grained granite rugated cardboard where of the quartz t it hits your ribs; then layer of newspaper... with geodes lined with glittering calcite or quartz Often these can be California, in in Southwestern |  | | Book (volume) | | north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare alluvial Diamond. THEBES: c area...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...Amethysts, or Quartz crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T...S, R. 10 E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare alluvial Diamond. THEBES: c area...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...Amethysts, or Quartz crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T...S, R. 10 E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | variety and wealth of locality information concerning quartz gemstones are recognized in a separate chapter...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken... Special Optical Effects. PRINCIPAL GEMSTONES Diamond, Corundum (Ruby and Sapphire), Beryl, Topaz, Opal...Rhodonite, Idocrase (Vesuvianite), The Garnet Group. Quartz FAMILY GEMSTONES RarRE AND UnusuaL GEMSTONES Chrysoberyl | | | Book | | topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque...frlled with geodes lined with glittering calcite or quartz. Otten these can be found where they have been...known as pegmat1te Prospectors look for pieces of quartz and mica then try to trace the long narrow pegmat1te...looking for stains or changes In the pattern of the quartz and feldspar mass that would lead to a pocket of...South Dakota are also regions attractive for rose quartz and other minerals found 1n pegmatites Such prospecting |  | Pollet-Villard, Marion, Daval, Damien, Fritz, Bertrand, Knauss, Kevin G., Schäfer, Gerhard, Ackerer, Philippe (2016) Influence of etch pit development on the surface area and dissolution kinetics of the orthoclase (001) surface. Chemical Geology, 447. 79-92 doi:10.1016/j.chemgeo.2016.09.038 | Journal (article/letter/editorial) | | 94720, MA 2 NU CNRS, 67084, Strasbourg, France USA * Correspondence: Marion Pollet-Villard (polletvillard@unistra...the formation of diamond walls are parallel to (6 5 6), (6 NU shape etch pits. Diamond pit diagonals...For example, Gautier et al. (2001) observed that quartz dissolution rate reached a steady-state value in...area would provide a better estimate CE P of quartz dissolution rate. Similarly, Godinho et al. (2012)...polished through a multi-step abrasive sequence using diamond suspensions of T decreasing grain sizes and soft |  | | Journal (issue) | | ........187 by P. B. Moore The origin of faden quartz .................................................wide range of interests, from pyroluminescence in quartz to extensive studies on contact metamorphism in...Schacht (who was bom Horace Greele} Schacht in the USA), President of the German Reichsbank. In du< course...INTRODUCTION The defining characteristic of faden quartz crystals is the presence of a white thread-like...“ fah-den” ), which means “ thread.” 1 Fa den quartz crystals are usually tabular due to uneven development |  | | Book | | of quartz and its a great gems other than and varieties, with favorite location of quartz agate...beautiful in BOX 244 3BURY, VT 0581Q «r and Other Quartz Gems by ! the field and useful gems or novelties... THE HOOF. OF AGATES And Other Quartz Gems And Other Quartz Genis liy Lelande (Juich CHILTON...author believes that this is a needed book on the quartz gem minerals. Needed by whom? Needed by the more...cut into cabochons or faceted stones are in the quartz family, a book is needed that gives complete details |  | | Book (volume) | | chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and pits along the Platte...townagate, chalcedony, jasper, petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka, in the Snyderville...chalcedony, jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara R. and Minnechaduza...gem qualityagatized and opalized wood. DAWES COUNTY CHADRON, in N part of Co. and as far W as Crawford...landsvertebrate fossil remains; Pine Ridge, areaQuartz concretions, agates, petrified wood, fossils, etc | | | Book | | AGATES SBURY. vr 06819 - ---- ·--· and Other Quartz Gems by LELANDE QUICK co-author of G emcraft The...of agate collecting, the varie ties and forms of quartz gems other than agate, opal and its varieties,...great favorite with collectors. The location of quartz gems throughout the world is discussed, followed...org/details/bookofagatesot00lela THE BOOK OF AGATES And Otl1er Quartz Gems By Lela11de Oi,ich CHILTON BOOI'i COMPANY.... . . . . . 25 Glossary of Agate a11cl Otl1er Quartz Gen1 Tern1s. . . . . . . . . . . . 30 Cl1a1)ter |  | | Book (volume) | | book by K. V. Zinserling, Artificial Twinning of Quartz, published by the Academy of Sciences of the USSR...Historically, interest in the descriptive morphology of quartz, although long continued, was predominant in the...structural and crystallochemical properties of quartz and of the other polymorphs of silica are now the...the selection of colorless, limpid crystals of quartz and of other minerals as standards for the measurement...variations apparently always present in natural quartz. After a century of extremely precise and laborious |
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Diamond Ledges, Granby, Hartford County, Connecticut, USA