 | | Journal (issue) | | Color? Practice? Commercial? T op-Commercial? Top Crystal Gemstone Grades or animal bones opa lized BUY...Mitchell OUR COVER Activities and happenings in the rock hobby 16 VUG COLLECTING 51 THE AMERICAN FEDERATION...1nlorma11on dOCI requests 10 ine Ameucan Federation CALIFORNIA FEDERATION OF MINERALOGICAL SOCIETIES Otlicus...LAPIDARY EQUIPMENT P()\\ ERGLID E CO:\TROL PA:\EL ..--- I 16''-18'' ā¢ 20'' -24 '' ā¢ 36'' Slab Saws...secretary-treasurer of the those with common interests. California Federation). A major portion of the clubs in |  | | Journal (issue) | | Reveals Largest Violet Diamond Recovered from Argyle Mine Gemology 32 18 21 26 Harvard Mineral Heritage...provenance of colored gemstones all the way to the mine that produce the stone. The vertically integrated...price. Confidence is increasingly InColor Bureau USA Claudiu Margarit claudiu@gemstone.org [1] (212) 620-0900...possible tied to transparency and provenance. from mine to market is being developed strongly. As a result...branding strategies are increasingly being related to mine sites, local towns or geographical areas. There |  | | Journal (issue) | | a little htl'r rha11 we imended, but w1tl1 three Rock Ā·NĀ· Ge111s shows in a shore spact! of rime Wt! fdl...the show at Kempton Park Ract:coursl' in AĀµnl). ROCK 'N' GEM MAGAZINE Compikd by Tony Rance & Hdcn Carver... The MagiC'"'Of Getnstones In rl11 edirion of 1he Rock & Gem Mag.1zi11e we conrinuc lisnng rhe mosr popular...Helps to remember and understand your dreams. JADE Rock 'n' Gem ā¢ 11cn:.1ses lo11gevny :111d frrultry...rul perululwns. 'Wufe range of silverjeweffery, crystal carvings, minerals, gems, moufavites a.rul polisfwf |  | | Book | | Photos, 21 ; Ken Lucas/Visuals Unlimited, 23 (left); BBC Microimaging/Visuals Unlimited, 25; Doug Sokell/...different speckle is a mineral. Even in a s1nooth, black rock there are microscopic pieces of different minerals...organized into crystals. WHAT IS A MINERAL CRYSTAL? A crystal is a three-di111ensional structure. Salt...~~~F~ 'W CHLORINE ' ~"J SODIUM Ato1ns in a crystal are organized into a pattern that repeats itself...crystals. I -- C H A P T E R T W 0 AN EL E MEN T is a substance made up of only one kind of |  | | Journal (issue) | | Norman sluicing stream sediment in the Mountains of County Mourne Mountains (Photo: Richard Warner) Down....The thick Triassic halite (salt) off the shore of County Antrim is an obvious target for consideration....(TCD), Best Poster Prize 7 Ocean Floor Lavas in County Waterford Catherine Breheny and Kathryn Moore (NUI...located in the Copper Coast European Geopark in County Waterford. Inland exposures of the formation are...interaction of lava with seawater: Hyaloclastite (a rock of glassy shards) forms by non-explosive granulation |  | | Journal (issue) | | VOLUME 22 NUMBER SIX APRIL 1991 Cover Picture A crystal of emerald on calcite from Muzo, Colombia, from...Dr Campbell Smith on curatorial duties with the rock collections and continued his studies of Scottish...discovery of another new mineral, painite, found as a crystal by A.CD. Pain at Mogok in Burma and named in his...Stevenson. This was a veritable mine of of inif one can have a mine for pearls. When formation - if I...Wednesday, 3 May 1989, at 11.00 hours, Long Wave, the BBC broadcast an excellent programme on Radio 4. It was |  | | Journal (issue) | | Netherlands, was cut from a 70+ ct octahedral crystal that was reportedly mined in southern Borneo. The... Madagascar | Sphalerite from Balmat, New York, USA | Tourmaline from Calabar, Nigeria | Sapphire Coloured...Alonso-Perez Harvard University, Cambridge, Massachusetts, USA Alan D. Hart Gem-A, London Karl Schmetzer Petershausen...Edward Boehm RareSource, Chattanooga, Tennessee, USA Brian Jackson National Museums Scotland, Edinburgh...Johnson Mary Johnson Consulting, San Diego, California, USA Alan T. Collins Kingās College London Stefanos |  | | Journal (issue) | | Krieg ROCKWATCH THE MARATHON ALPHABET PRIZE QUIZ ROCK 'N' GEM SHOWS REVIEW by He/en Carver BURHOUSE LETTERS... FIELD TRIPS MEETINGS CLASSIFIED ADVERTISEMENTS ROCK 'N' GEM MAGAZINE Compiled by Tony Rance & Helen...term dichroism if this is new to you. Any gem crystal that is dichroic has a structure which absorbs...tend to darker rather .than lighter shades. A crystal may be uniformly coloured or may show a range of...typical crystal. Its long axis, or c-axis is usually easy to discover as the outer faces of a crystal often |  | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...after paralstonite, a new pseudomorph from Cave-in-Rock, I llin o is .................................443.............. 505 by T. Moore COVER: SPODUMENE crystal, 11.8 cm, with albite, from Nuristan, Afghanistan...common throughout the district. The Minerva No. 1 mine near Cave-inRock has been the premier specimen producer...calcite specimens from a new pocket in the Minerva mine. Associated with the calcites are 1 to 2-mm white |  | | Journal (issue) | | CARLSBAD STORE: 2961 STATE STREET, CARLSBAD, CALIFORNIA July 1973 - No. 430 OFFICIAL MAGAZINI AMERICAN...MANAGING EDITOR ART/ ADVERTISING DIRECTOR - CALIFORNIA FEDERATION ASSOCIATE EDITOR - OF CIRCULATION...Corraapondenca and requests for Information to the California Federation ahould be addre11ed to: Mra. Juanita...OF MINERALOGICAL SOClmES CONTENTS: FEATURES California Camper Ownerā¢ Beware ..........................Convention and Show. " Garnel Star of Idaho." Nez Perce County Fairgrounds, Lewiston, Idaho. Host. Helli Canyon |  | | | | breast. Below: a golden sunset over Laguna Beach, California. āAbove: the ancient Egyptian hieroglyph for...Macedonian work of the third century BC. river-bed or rock face that lured the prospectors in their thousands...natural state. It was mined in the Great Boulder Mine, at Kalgoorlie, and was analysed as 999 parts common...water and weather over countless eons wore away the rock matrix, leaving the gold particles free to settle...gravels were often submerged by layers of lighter rock and soil debris or āeluviumā. Thus āeluvialā placer |  | | Book | | and of eternal life, upon over Laguna Beach, California. Detail from a tomb- c. 2000 BC. The tomb...Macedonian work of the third century BC. river-bed or rock face that lured the prospectors in their thousands...natural state. It was mined in the Great Boulder Mine, at Kalgoorlie, and was analysed as 999 parts fine...and weather over countless eons wore away the rock matrix, leaving the gold particles free to settle...gravels were often submerged by layers of lighter rock and soil debris or āeluviumā. Thus āeluvialā placer |  | | Book | | BROADCASTING CORPORATION . This book accompanies the BBC Further Education Television programmes On the Rocks...of programmes prepared in consultation with the BBC Further Education Advisory Council This book is...use all over the world, have come from an English county (Devon) and two ancient Welsh tribes (the Silures...palaeo-magnetism coupled with improved techniques of rock dating. Now a great deal of classical geological...accessible, that this book has been written and the BBC Television series of the same name, (for which it |  | | Journal (issue) | | increasing the knowledge and experience of its members in rock, mineral, gemstone and fossil collecting and their...(idiochromatic) or it may be an impurity (allochromatic) ā¢ Crystal lattice defect/colour centre ā¢ Interference - due...the same (or similar) crystal system. Members share the same (or similar) crystal structure Members share...minerals and additionally kyanite is in a different crystal system (triclinic) to the other two (orthorhombic)...as gems, all the others with the same structure/crystal system and general chemical formula, are really |  | | Book (edition) | | Wu!fenite. Red Cloud mine, Si/County, Arizona. Smithsonian Institution...District, Cochise County 64 The Tombstone District, Cochise County 70 The Mammoth-St. Anthony Mine, Tiger, Pinal...Pinal County 78 Uranium and Vanadium Deposits 80 Monument Valley 81 - ā¢ Vll The Cameron Area 85 Breccia...Breccia Pipes 87 Pegmatites 88 "Mine Fire" Minerals, United Verde Mine, Jerome Arizona Meteorites PART... Apache County 435 Cochise County 436 Coconino County 437,438 Gila County 439 Graham County 440 Greenlee | | | Book (edition) | | Wulfenite. Red Cloud mine, Silver district, Trigo Mountains, La Paz County, Arizona. Smithsonian Institution...District, Cochise County 64 70 The Tombstone District, Cochise County The Mammoth-St. Anthony Mine, Tiger, Pinal...Pinal County Uranium and Vanadium Deposits 80 Monument Valley 81 63 78 il S: The Cameron Area 85...Breccia Pipes 87 Pegmatites 88 āMine Fireā Minerals, United Verde Mine, Jerome Arizona Meteorites 93 PART...Apache County ā 435 Cochise County 436 Coconino County 437, 438 Gila County 439 Graham County Greenlee |  | | Journal (issue) | | moonstone from Malawi|News from the Oceanview mine, Pala, California|Scheelite from Inner Mongolia|Aging silver-treated...Discoverer of TsavoriteāCampbell Bridgesāand His Scorpion Mine By Bruce Bridges and Jim Walker Gemmological Briefs...Chattanooga, Tennessee, USA; Alan T. Collins, Kingās College London; John L. Emmett, Crystal Chemistry, Brush...Brush Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France; Rui Galopim de Carvalho,... Gemological Institute of America, Carlsbad, California; Jack M. Ogden, Striptwist Ltd., London; Federico |  | | Journal (issue) | | 16 .18 .23 .24 .26 .28 .32 .33 .34 .36 .37 .38 ROCK 'N' GEM MAGAZINE Compiled by Tony Rance & Helen...those of R ock '11 ' Gc111 111a.~a.:::i11c. i11 Rock 'n' Gem One of th e main reaso ns we started this...a flood of m:iil!! We will be off to the spring Rock 'n' Gem shows agam before thc next mag:izine, so...opercula of various species may be used as buttons RG Rock 'n' Gem Otha iute:Ā· ā¢.Ā·ting .facts: Gastropods...of geology helps you to interpret the mosaic of rock types that make th e landscap e so varied, and enhances |  | | Journal (issue) | | ........... RS "Scavenger Hunt" at the Bakewell Rock Exchange .......... .......... Membership changes...building UK - Mexico links .................... Crystal Classics open day ....... .... ... ... .................................... Trial at Brandy Gill Mine ... ..............................................Posnjakite, connellite and other minerals from Crinnis Mine, Cornwall Meeting & Field Trip Reports ...........aside and irrespective of our preferences for the rock hammer or the "silver pick", let's hope 2012 is |  | | Journal (issue) | | Mining Rubies in Greenland ā The Aappaluttoq Ruby Mine Greenland Ruby ā The Gem That Came in from the Cold...Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla, Thailand Board of Directors Gabriel...Michelou, Colombia Ruben Bindra, USA Immediate Past President Benjamin Hackman, USA Executive Director Gary Roskin...31 W. 47th Street, Suite 1103 New York, NY 10036 USA ica@gemstone.org T: 1.212.620.0900 F: 1.212.352.9054...upbeat results in the markets in Japan, Europe, the USA and Hong Kong. And China seems to be back to sourcing |  | | Journal (issue) | | courtesy of The Gem Trader (Cave Creek, Arizona, USA); photo by Brad Payne. 1 Whatās New Inspectrum...Cambridge, Massachusetts, USA Edward Boehm RareSource, Chattanooga, Tennessee, USA Maggie Campbell Pedersen...Ireland Galway John L. Emmett Crystal Chemistry, Brush Prairie, Washington, USA Emmanuel Fritsch University...Johnson Mary Johnson Consulting, San Diego, California, USA Stefanos Karampelas Laboratoire FranƧais de...Shigley Gemological Institute of America, Carlsbad, California Christopher P. Smith American Gemological Laboratories |  | | Journal (issue) | | increasing the knowledge and experience of its members in rock, mineral, gemstone and fossil collecting and their...John Pearce pictured digging for minerals down a mine Pictures: KIR.STY-WIGGLESWORTH . 20453 oc YOU...collected within the last 2 months from Small Cleugh mine at Nenthead, a small lead mining village high up...and after about 400m you reach the dry part of the mine at Wellington Flats. After a rest you proceed through...and obtained work as a sampler at South Crafty Tin Mine. In 1972 he started his own dealing business and |  | | Journal (issue) | | from India ā¢ Emerald mining techniques at the Kagem mine, Zambia ā¢ Yellow grossular from Tanzania ā¢ An unusual...Basel, Switzerland James E. Shigley Carlsbad, California E. Alan Jobbins Caterham, UK Thomas M. Moses...New York, New York Mary L. Johnson San Diego, California Mark Newton Coventry, UK Wuyi Wang New York...Anthony R. Kampf Los Angeles, California George R. Rossman Pasadena, California Christopher M. Welbourn...Gems & Gemology are by Pacific Plus, Carlsbad, California. Printing is by Allen Press, Lawrence, Kansas |  | | Journal (issue) | | Yeong ashlynn.yeong@gemstone.org InColor Bureau USA Claudiu Margarit claudiu@gemstone.org [1] (212) 620-0900...West 47th Street, Suite 201 New York, NY 10036, USA Tel: 1-212-620-0900 Copyright Contents of InColor...nor any gemstone mining industry. The path from mine to market is long and fragmented and involves mining...a Education Partnership for Children in as rock crystal quartz. However, small collaboration between...joint venture partner in the Aappaluttoq mine, is the mine operator, and shipped the process and gemstone |  | | Book | | been rejuvenated with the potential opening of a mine near Tyndrum and the discovery of other gold prospects...claimed to be able to converse with angels through a crystal ball, and is reputed to have owned a powder that...called the Royal Mines Act which stated that any mine producing three halfpennies of silver per pound...OF THE NATIONAL GALLERY OF ART, WASHINGTON DC, USA). rationalisation of medicines in the 17th century...Contact Dermatitis Society. Studies carried out in the USA and Japan also suggest that gold contact dermatitis |
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