 | | | | images Front cover top Agate from Germany; bottom Agate from Scotland. Back cover Agate from Germany. Title...Title page Agate from Russian Arctic coast. Distribution NBN International Estover Road Devon PL6 7PY ... Contents Introduction Names of agates What is an agate? Properties of agates Sources of agates Europe...USA Canada Mexico South America Africa Asia Australia 108 111 122 131 138 144 Lapidary 150 Uses...different geological environments. Since the mid-1900s, agate collecting has become very popular in Europe, North |  | | Journal (issue) | | 9 EFMLS: Wildacres in autumn .......... p. 15 Agate classifications: Part 2 ............ p. 16 Auction...or check. ing,” the fine art of walking about Australia and collecting rocks for recreation. In addition...presentation by club member Steve Hill. Steve lived in Australia for several years and was actively involved in... and gemstones, Northern Territory and Queensland, Australia Kathy Hrechka: Recently taken microphotographs...spoke about his adventures while fossicking in Australia. Photos: Sheryl Sims. New Business The president |  | | Book | | fruit of that experience. A previous guide to the agate collection, published in 1899, was not illustrated...and inside of halved agate (sec also fig 92) Front cover: detail of sagcnitic agate from Dun bog (sec also...cover: Blue Hole agate (sec also fig 5 I) Inside frolll and back covers: detail of vein agate from Burn Anne...part, a tantalizing mystery. The popularity of agate has given rise since World War II to an absorbing...the British Isles, and presents a novel theory of agate formation based on old and new information. The |  | | Book | | Images Front cover top Agate from Germany: bottom Agate from Scotland. Back cover Agate from Germany. Title...Title page Agate from Russian Arctic coast. Distribution NBN International Estover Road Devon PL6 ?PY UK...Introduction 4 Names of agates 6 What is an agate? 10 Properties of agates 44 Sources of agates... South America 122 Africa 131 Asia 138 Australia 144 Lapidary 150 Uses of agates through the...geological environments. Si nce the mid-1900s, agate collecting has become very popular in Europe, North |  | | Journal (article/letter/editorial) | | Eur. J. Mineral. 2002, 14, 1109–1118 Agate: a study of ageing TERRY MOXON 55 Common Lane, Auckley, Doncaster...measured using X-ray powder diffraction. A plot of agate crystallite size vs log age of host rock shows a...increase in density. A high correlation between agate crystallite size and age of host rock shows that...determination of crystallite size in wall-lining agate allows either an estimation of the approximate age...rock or an identification of a known agate region. Key-words: agate, dating, silica, X-ray, genesis, density |  | | Journal (issue) | | February Meeting Program: “Fossicking” in Australia In this issue … Mineral of the month: Vanadinite...EFMLS: Safety matters—Tough guy ......... p. 15 Agate classifications: Part 1 ...................... p...sapphires from Sapphire, Queensland; opals from Mintabie and Coober Pedy, South Australia; Ordovician fossils...safety rules. Fortification agates. Top: Laguna agate nodules (Mexico); bottom: Piranha agate (Brazil). ...by Ron Gibbs The bulk material that cements the agate is a silica called chalcedony. Pure chalcedony can |  | | Journal (article/letter/editorial) | | banded agate from around Clinton (Clinton Co.) was also received. This is a finely banded agate (fortification...Whitsett, Texas. The unknown black specimen is a moss agate ; so heavily disseminated is the black "moss" in...label. ette Co., W . Va. (p. 23) which refers AUSTRALIA—The following letter, to a clipping from the CHARLESTON...from a subNEWS by Bob Jarrell. scriber in Queensland, Australia, who "In 1907 I finished five years as as-...going Co.), W.Va., on the New River. on in Queensland, Australia. There is a "At that time there were several |  | | Book | | lapidary field. Beginning with a description of agate, he proceeds to an interesting account of the history...ever been written before. Tracing the history of agate from prehistoric days through events of the Bible...the details of agate collecting, the varie ties and forms of quartz gems other than agate, opal and its...infor1nation on tl1c rockl1ouncl's favorite gem-tl1e agate. THIS IS LELAND£ QUICK La Jolla ( ,5an l)irgo)........................... . 4 Cl1a1)ter .3. Agate Collecti11g . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | Number 08 August 2015 FeAtUreS This fine Fairburn agate (1.7 inches by 1.5 inches) with Skittles® colors...SPECIAL: ROUGH OPAL PARCEL FROM LIGHTNING RIDGE AUSTRALIA. LR15B-3oz: Three ounce rough opal lots from Grawin/Mulga...Lightning Ridge Opalfields in New South Wales Australia. This is a potch and color grade of rough opal...trip report of my 2014 buying trip adventure to Australia. Attached photo is of a close-up of a 1.5 kilo...VIA WIKIMEDIA COMMONS My Favorite Minerals Fortification agates are the best-known type, and Minas Gerais | | | Book | | lapidary field. Beginning with a description of agate, he proceeds to an interesting account of the history...ever been written before. Tracing the history of agate from prehistoric days through events of the Bible...growing hobby. Chapters are devoted to the details of agate collecting, the varieties and forms of quartz and...varieties, with favorite location of quartz agate, opal wood — collectors. The petrified gems throughout...information on the rockhound’s favorite gem — the agate. Lelande Quick La Jolla (San Diego), California |  | | Book | | into new rocks. pyramidal , crystal mica schist agate lining garnet crystal Garnet in schist This almandine...deposits of diamonds have been # discovered in Australia. This mine at: Argyleis huge open-cast operation...Staining or dyeing is very widespread. Slices of agate are routinely dyed with vivid colors such as blue...the Indus Valley Civilization, this necklace of agate, chalcedony, and jasper beads is probably from Mohenjodaro...3000sce, “magical” amulets were being cut from agate, carnelian, turquoise, and lapis lazuli in Egypt |  | | Journal (issue) | | coloration. Smoky Quartz Mooralla, Victoria, Australia James Tzaferis Specimen and Photo smoky quartz...2007 Rutilated Quartz The Tingha Sands, NSW, Australia Quartz with included rutile is known locally as...Fluorite coated Quartz Emerald Mine, Emmaville, NSW, Australia James Tzaferis Specimen and Photo "Herkimer Diamonds"...Collection Reverse Smoky Scepter Mooralla, Victoria, Australia Denise Bicknell Collection On Left: Scepter (Goldschmidt)...Rockhound Area Safford, Graham County, Arizona, USA Agate is a term used to describe chalcedony with concentric |  | | Journal (issue) | | and SHAPES in any slabbed stone - jade. quartz, agate, glass, etc. Fas1er and easier than grinding. HI-Strength....65 How to Prepare Cabinet Specimens of Fortification Agate R. Ed Romack. Treasurer 705 John Adams Pkwy...BOTSWANA AGATE - Hard agate nodules of beautiful fine white banding on translucent grey or purple agate. They...outside, but the inside is attractive agate similar to Lake Superior agate which sells for much more. It comes...lined with quartz crystals or solid agate with nice patterns of blue agate. Priced at $1.25 per lb. or 10 |  | | Catalog/List | | Choice, xled, 1:1 x 3 x :!", $2.00. South Australia. Exceptionally choice xled s1>ccl mcns, 3 x 3... 2 x 2", $3.00; abou t 1 x 1�", $1.50. South Australia. Fine quality xlcd i;roups of large xis, H x 1�"...4o x 7 x 2�". $5.00. MANGANOCOLUMBITE Western Australia. XI In feldspar, 2 x 2� x l", $2.00. FINE MINERAL...$G.00; tufts on rock, 2 x 3 x 1", $3.00. South Australia. Botryoidal specimens with natural polish, H x...plentiful color flash1:s, 3¼ X 7 X 1,", $37.50. Queensland. A Jaye1· o( beautiful precious opal on Ironstone |  | | Book | | Canada 80 7 Occurrence: Rest of the world 81 Australia 81 India 84 Burma 84 Libya 84 8 Testing the quartz...all rock types and in most countries. CHALCEDONY Agate (light to dark colours in concentric bands, translucent)...translucent), fire agate (dark agate with play of colour similar to that in opal, opaque), moss agate (pale yellow...the categories Silex or Kieselstein (including agate, flint opal), Petrosilex or Halleflinta (for jasper...a species of cherry with a reddish fruit. Moss agate is characterized by dendritic growths resembling |  | | Book | | first obtain beds and opals is parts of Australia, as long as you a permit from the authorities...India, Uruguay, .Madagascar, the US.\, Germany, .Australia, Namibia, and Zambia. • Remark Poor quality material...Africa O Madagascar ex- traction economical. Australia f RiJBiKS IN Myanmar mineral deposits of Mogok...Fairly soft, goodfire Chatoyant Quartz 86 Moss Agate 89 Fibrous structure mosslike pattern Translucent...luster 1 15 Sometimes Green MiCROCLiNE 123 Agate 88 Distinctive blue- Translucent, green color |  | | Book | | Plasma . . . . . Chalcedony Agates Onyx or Agate Onyx . . . . . Carnelian Jasper False Lapis...in Sumatra, Borneo, the Ural Mountains, and Australia. Crystals have also been found in the United...Siam, Ceylon, Bur- Hindustan, Borneo, Sumatra, Australia, France, Where in and Germany. rubies and... Ceylon, North America, Sweden, Bohemia, and Australia. The red spinel, and especially those tints...Europe ; Salzburg, Austria Remarkable, South Australia America. Some ; Mt. ; and North of the finest |  | | Journal (issue) | | Affiliated Associations: GeDlDlological Association of Australia Canadian GeDlDlological Association Rhodesian...poor-ish, highly coloured illustration of fortification-agate (also 1959). There are two illustrations...beryllium mineral from the granulites of central Australia. Min. Mag., 1967, 36, 279, p . 305. A green mineral...mineral found in the Musgrave Ranges in central Australia during 1966 was found to be a 9-layer rhomohedral...article under the same title published in the Queensland Government Mining J o u r n a l . A similar article |  | | Catalog/List | | 26 X 2", $26.65; 3:l X4 Xi", $33.36. Western Australia. Masses, rich in rock, 2 X 3", $15.00; 2 X 2¼"...glomerate, 3 x 6", $2.65; 3 x 611", $3.35. South Australia. Yellow coating on ilme nite, 1 x 2" to 2x 2"...35•. Utah. Massive with ferriomoly)>dite on •Queensland. Precious Gpal with bluish quartz, 2 x 2", $... QUARTZ. • Agate. Brazil. Polished slabs of gray, brown and white banded fortification agates, 2:l x...disulfide. Lake Superior. Beautiful polished band ed agate, red, about 1 x H", $1.00 and Colorado. Xled. Nice |  | | Book (edition) | | rock-crystal, cairngorm, amethyst, chalcedony, and agate, whilst it is of course present as an essential...Brazil, and South Africa; Borneo, British Guiana, Australia, the United States, British Columbia, and one...diamond in nature remains quite uncertain. tliis Australia is unimportant as a source of diamonds but a few...rounded pieces of quartz with jasper, chalcedony, agate and garnet. The yield for 1910 was 813,323 carats...comes from Brazil, where it occurs associated with agate in the amygdaloidal cavities of a decomposed lava |  | | Catalog/List | | crystals or radiations on shale Mt Cobalt. Queensland. Australia Sharp.clear. terminated crystal with one...sharp micro crystals on Jarosite Moculta South Australia 1cm £3 -~-I P0/4 _ - - - ·-- · __ mosll~Apatite...-·-White chalky veins in matrix Clinton, South Australia 1/, x ½ £ 1.20 One of the few rare, Scandium minerals...Micali ·-- -·- --- quite_rich ____ _ _ __ _ __ Australia - ·- ---- - --- - - - - ··· - - ·· 216 LEVYNE...2x2 £ I0 -·-· • . •·- _ __ • Rockwell. N.S.W. Australia _______ ___ _ Euboea Greece _ __ _ ·.. . Altermark |  | | Journal (issue) | | brilliant-cut, both from the Argyle mine in western Australia. They represent typical examples of Hrich diamonds...hydrogen-rich diamonds from Argyle in western Australia exhibit a violetish-grey to greyish-violet colour...known to come from the Argyle mine in north-west Australia. This mine became fully operational only in 1985...It was first discovered in the Musgrave Range, Australia (Hudson et al, 1967) and it was considered to...mineral from from the polytype of central central Australia. Mineral.Mag., Mineral.Mag., 36, 305-10. granulites |  | | Book (edition) | | from India, ground for use as Agate. achates. Ancient name for agate. Free achromatic from color;...green tourmaline. See African emerald. Moss agate. agate (ageg’-it). One of the many varieties of chalcedony...translucent form with dendritic inclusions (moss agate). It is found in virtually all colors, usually of...translucent to semitransparent. Most gray-banded agate is African emerald. Emerald from the Transvaal...Trade dyed to onyx, moss agate and improve its color. See agate. jasper. Mixture of jasper chalcedony |  | | Book (edition) | | Properties of Gemstones Cutting and Polishing Agate 60 Hardness 19 Cutting and Polishing Colored Stones...Chrysoprase 128 Heliotrope 128 Dendritic Agate 130 Moss Agate 130 Agate 132 Jasper 146 Fossilized Wood 148...term colored stones all precious stones except agate and diamond. Colored Precious Stone (also for ...for its green color), their place of discovery ("agate" for a river in Sicily), or mysterious powers ("amethyst"...Staurolite Kornerupine Titanite Pyrope Senarmontite Agate Amethyst Lithiophilite Tremolite Manganotanitalite |  | | Book | | QUARTZ FAMILY MINERALS Section of polished agate, showing natural color at the lower end, and on...Chapter uartz xiii . . . 13o Contents Agate —Chalcedony Chapter X 157 Chapter XI Geodes...Illustrations Section of Polished Agate (Frontispiece) iv Axhead Fashioned from Agate 14 Representative Minerals...Crystals Arrowheads of Common 119 Opal and Agate Display of Quartz Minerals Jasper Jasper 130... l6l Nodular Growth 164 Banded Agate 166 Fortification Agate 170 Cabochon-style Cut Agates 175 |
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