 | | Journal (issue) | | and a History of Emerald Mining in Habachtal, Austria Duncan Pay FEATURE ARTICLES p. 300 292 Blue...of Emerald Mining in the Habachtal Deposit of Austria, Part I p. 347 Karl Schmetzer Contributes to...pearl • Windmill zoning in tourmaline • Quarterly Crystal: Rutile on hematite 390 Colored Stones Unearthed...peridot crystal and cut gem on the cover are from the Bernard-Myo area of Mogok. The crystal measures...and a History of Emerald Mining in Habachtal, Austria Welcome to the Winter 2021 issue of Gems & Gemology |  | | Book | | information b Book review c Crystal morphology information d Crystal drawing ff Continues on following...D. Richerson, A. J. Regis: New minerals from Mont St. Hilaire, Quebec 2: 141-142 AJO Famous mineral localities:...the Alpine ar,d Subalpine region [Switzerland,Austria and Iti:Jy](by C. M. Gramaccioli) 8:287-293 Minerals...Alps of Austria (by K. Kotal) 13:171-173 ALSTONITE An occurrence of alstonite at Cave-in-Rock, Illinois...Curious World of Crystals; Crystallography and Crystal Chemistry (book reviews) 2:87-88 The Record bookshelf-Crystals |  | | Journal (issue) | | Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher photo. Fluorapatite, 3.3-cm crystal, from...own favorite experiences is gazing raptly into a crystal pocket just after it has been opened, and all the...classic locality for spectacularly large apophyllite crystal clusters, which still rank as some of the largest...cleaned off the thaumasite to expose the entire crystal. It is free of damage thanks to the protective... Eureka Supplement 5 THE THRILL Wulfenite crystal cluster, 30 cm across, collected in the Glove mine |  | | Book | | essentials of crystallography, chemistry, and crystal structure. These provide a firm basis for discussion...crystallography at the beginning of the text, crystal systems and associated conventions and terminology...minerals in order to avoid those lamentable errors in crystal forms and colors which are instantly apparent to...slightly reduced, and a few enlarged, as the diamond crystal of Plate 1, depicted in both natural and greatly...this is not simple and straightforward. 'Mineral', 'rock', and 'stone' are used indiscriminately as e9ujvalents |  | | Journal (issue) | | A. Wilson Selected Minerals from the Volcanic District of Laacher See, Germany.........................8 O xfo rd St., L eice ster L E 1 5X W South Africa: H o rst W indisch, 3 0 van W ou w St., G ro en klo...Lapidary (Y oungstown, Oh.) Alta Crystal Gallery (Denver, Colo.) Rex Bannister (St. Louis, M o.) Carlos Barbosa...olorado Springs, Colo.) Crystal Cavern Minerals (Livermore, Calif.) Crystal Showcase (R ochester, N....Minerals (Saugus, Calif.) 264 Hansen Minerals (St. Louis, M o.) Richard Hauck (Bloomfield, N. J.) Minerals |  | | Catalog/List | | t::_: •.·'':{}j;,·}~t' MM - T 'N Fl. P. R. - crystal crystalled crystalline crystallized micromount...opalescence ................... PERICLINE Italy, Austria 1 SWitzerland Aleine areas Fine large white twin...Mountains, Marysvale ----i'>ink crystalline mass, some crystal vugs ALTAITE Lead telluride Colorado Saguache County... Norway Kragerp Pure dark green cleavages and crystal sections .. Norway Kragerp ~JJ laq? lustrous dark...Island of Linosa --Lustrous black rectangular crystal sections : 'I to ~II $, 25, 5/ $1. 00, • • • • |  | | Book (volume) | | stinguished chemist has proposed several judicious im¬ provements in the prevailing mineralogical systems...biinde, 8vo. -Annalen der Berg und Hiittenkunde, Salzburg, 1801—1805, 3 Bde 8vo. -Ephemeriden der Berget...Thick Fibrous Ame¬ thyst, - 148 - 151 2. Rock-crystal, 3. Rose or Milk Quartz, l60 4. Common Quartz... Columnar Talc, 5. Nacrite, y 6. Asbestus. 1. Rock-Cork, Precious b. Conchoidal 4. Talc. 1. Common...Flexible Asbestus, 3. Common Asbestus, 527 532 4. Rock-Wood, or Ligne¬ ous Asbestus, 7. Picrolite, 534 |  | | Book | | 16th century: toothpick (cat.no.188), “Conversion of St Paul’ (cat.no.171), ‘Charity’ (cat.no.149) XB Spanish...Jean, duc de Berry, ¢.1405—10 (cat.no.67) 11-13. St Catherine of Alexander, a wooden sculpture attributed...silver-gilt ewer and basin of printed in Strasburg, 1502 Johann Moritz von Nassau-Siegen, 23,24 Panel often painted...no.D.64~—'85) 69 Portrait of Wolfgang Thenn, of Salzburg, 20 Italian maiolica bottle made for the Duke...pearwood, 1531 (cat.no.257) 70—2 Busts of Margaret of Austria and Philibert of Savoy traditionally attributed |  | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates Growth of Twin Crystals Crystal Faces Pseudomorphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. Perfect models |  | | Book | | Goldwork Introduction by Ulrike Weinhold 250 Rock-Crystal Works Introduction by Jutta Kappel Dresden...of Greeting ae % President = 2k WW: | f a im od 2 2 Hy from 3 ya rN of the Federal Gagee’...an exhibition is entitled “Princely Splendor,” it im- mediately raises high expectations—expectations...rises in silver production. Within the Freiberg district alone, the sovereign’s profits multiplied fivefold...churches, town halls, and bourgeois houses. Another im- portant source of revenue for the electors and |  | | Book (volume) | | ciliated, dentiform ? amorphous, ramose, and crystal¬ lised. The surface of the grains is rough, and...ex¬ tensive washings were carried on in that district, for the purpose of collecting this precious metal;...was found *j\ It occurs in granite at Gastein in Salzburg; at Gardette in France; in gneiss in Upper...mica-slate in Salzburg and the Tyrol; in clay-porphyry in Transylvania; in hornblende rock, along with...Schlangenberg, in veins that tra¬ verse hornblende rock : auriferous pyrites is met with in quartz at Beresof | | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates G rowth of Twin Crystals Crystal Faces Pseudo morphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 Perfect models | | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates Growth of Twin Crystals Crystal Faces Pseudomorphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 a i ■ I II |  | | Book (volume) | | oryctognostic species of Slate-spar, Anthracolite Chalk, Rock milk, and others, have been formed under the same...Hutten-Kunde, vom Jahr 1800 bis mit 1820, von Dr Johann Freyberg, 1822. Carl Freiesleben, Kon. Sachs...formed in part by a decomposition of hexahedral Rock-salt, by carbonate of lime. 3. It occurs in considerable...number of faces, solitary, and limited as in the crystal represented in Fig. 56. The 2. Na chemical...extend in several directions, while the rest of the crystal its original state so that the whole takes the |  | | Book | | Curator, Australian Museum, Sydney, AUSTRALIA x ROCK CURRIER, photographer and collector, Ardsley, New...University Museum, Tokyo, JAPAN ¥& CHARLES KEY, dealer, St. Petersburg, Florida, U.S. A. ¥~ HUGH LEIPER (deceased)...of collectors, dealers, curators, art buffs, and rock hounds who nominated specimens for review or served...curators and collectors, and in contacting recognized crystal photographers. Another quarter of a million miles...and a few were chosen because they are basic or rock-forming minerals of the mountains about us. This |  | | Catalog/List | | Micromount and Fluorescent columns . PETROLOGIC (ROCK) SPECIMENS ....... MINERAL DETERMINATION SUPPLIES...SUPPLIES including Blowpipe Testing.......... . xl - crystal xlled - crystalled xlline - crystalline xllized...County, Arizona. Sharp hexagonal barrel-shaped crystal druse. Many of the crystals exhibit a cavernous·...mina Ojuela. White-to-pale yellow sheave-like crystal FI. 1. 00 groups on limonite ................ Mexico...of Huesca, Estopinian. �ue mass in ancient trap rock, rare ...... AFWILLITE Hydrous calcium hydroxy-silicate |  | | Journal (issue) | | LTD ISSN 09!2-2409 Ryton Typing Service, 29 Ryton St., Worksop, Notts. S80 2A Y Tel. (0909) 476906 4...for3issuesinc. p& p . Cheques should be made payable to Rock Bouom Publications Ltd. ARTICLES TO:Max D.Freier...article on the latter in this issue). This superb crystal, 15mm on edge, sits on a small group of doubly-terminated...dry and desolate Ullswater valley in the Lake District providing superb halite and selenite specimens...2048) make collecting decidedly difficult. Bakewell Rock Swap has become the No 1 show in the world (some |  | | Book | | into the scratch and striking it separates the crystal. a sharp blow, this There are certain FRACTURE... FRACTURE. II planes at right angles where the crystal can be separated this property is called cleavage...to ; produce, while in others such as mica and rock-salt, cleavage is highly perfect the number only...surfaces are the result of the breaking of a crystal otherwise than by cleaving, and in a different...one medium to another, or from the air to a crystal it is bent or refracted this ; single refraction |  | | Book (volume) | | Genus I. Rock-Salt. 1. Hexahedral Rock -Salt. 1st Subsp . Rock - Salt. 1st Kind, Foliated Rock -Salt,... Fibrous Rock -Salt, Lake -Salt, 2 2d 2d Genus II. SAL AMMONIAC. 1. Octahedral Sal Ammoniac, 1st...Epsom - Salt, Genus V. ALUM. 1. Octahedral Alum, • Rock - Butter, 27 30 Genus VI . GLAUBER-SALT. 1. Prismatic...1st Subsp. Fluid, or Semi-fluid Amalgam , 86 2d im Solid Amalgam , 87 Genus V. COPPER . 1. Octahedral...I. Rock - Salt . 1 1. Hexahedral Rock - Salt. 1st Subsp . Rock - Salt. 1st Kind, Foliated Rock - Salt |  | | Book (edition) | | UPHAM SHEPARD, in the Clerk's office, of the District Court of Connecticut. CONTENTS . PART I , Page...sidered as an individual in the mineral kingdom . A crystal of quartz, iron -pyrites, or topaz, is an individual...inorganic kingdom , is called a simple mineral. A crystal of quartz, or a fragment of one, is therefore a...with regard to a crystal of diamond, or it may be composed of several, as in a crystal of beryl . An inorganic... 6 CRYSTAL LOGRAPHY. SECTION I. PROPERTIES OF SIMPLE MINERALS . CRYSTAL . The term crystal is applied |  | | Book (edition) | | particular directions Definition of the term, Primitive crystal . f. 2 3 4 5 6 7 . .... ...'... . 8 The...proofs of the ex;: uv.veness of these catastrophes 90 Rock of Gibraltar encloses bones of the antelope and...Porphyry . . . , Sienite . . . . . Topaz rock . . . . .130 . \ , . . . . ^27 .128..... ...... or shell limestone Third sandstone Rock . ~ , formation Chalk formation . . . ...all technical or scien- terms. The term is Crystal, derived from the Greek Kf t/s-^AAos (Crustallos |  | | Book | | vugs of crystalline talc. Easily the best extant crystal, a doubly terminated floater found in a talc vug...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Shelley Lambert extracted excellent loose ilmenite crystal clusters from a calcite vein-dike digging site...Chamberlain, 1982; Joyce, 2006a). Some of the ilmenite crystal faces are partly overgrown by a brown coating which...and is by far the largest known single ilmenite crystal from any locality worldwide. The crystals are blue-black | | | Book | | Cuwrator, Australian Museum, Sydney, AUSTRALIA & ROCK CURRIER, photographer and collector, Ardsley, New...University Museum, Tokyo, JAPAN Ye CHARLES KEY, dealer, St. Petersburg, Florida, U. 8. A. ¥e HUGH LEIPER (deceased)...of collectors, dealers, curators, art buffs, and rock hounds who nominated specimens for review or...curators and collectors, and in contacting recognized crystal photographers. Another quarter of a million miles...and a few were chosen because they are basic or rock-forming minerals of the mountains about us. This | | | Book | | Cura tor, Australian Museum, Sydney, Australia ^ rock currier, photographer and collector, Ardsley, New...University Museum, Tokyo, JAPAN ^ CHARLES KEY, dealer, St. Petersburg, Florida, u. S. A. ^ HUGH leiper (deceased)...of collectors, dealers, curators, art buffs, and rock hounds who nominated specimens for review or served...curators and collectors, and in contacting recognized crystal photographers. Another quarter of a million miles...and a few were chosen because they are basic or rock-forming minerals of the mountains about us. This |  | | Book (volume) | | as high a the they charm: engraved, rock-crystal, of the angularity also were still and...attempted. had the then were was of ruins rock-crystal but quartz, the began at into the beads... of had but lenticular early Mycenaean rock-crystal, agate, dony, agate a 203 period, Mycenaean...can rosettes. as special Fig. 168. Twinned crystal of Diamond. markings: being and outline,...and parallel only be used mass have class crystal the 457 1 /2 “Excelsior”, (the only are |
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