Davide Fuin Italy’S Brightest, Best, and Last
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GEM FOCUS August 2020
GEM FOCUS August 2020 GOLDSTONE, SUNSTONE, AVENTURESCENCE; A SPARKLING ENIGMA OF CENTURIES... emstones with unusual optical effects are know as sunstone feldspar today. Goldstone is cre - defined as phenomenal gems. Their unusual ated by mixing microscopic copper platelets into Geffect can designate a variety within a molten glass. The sheen and earthy color of this species and add value. i.e., star sapphire. Synthetic material was ideal for Italian mosaics and more counterparts or simulants are often seen, especially affordable jewelry, whereas much larger blocks when the natural counterpart is particularly valuable were used to create ornamental objects such as such as natural alexandrite and color change syn - snuff bottles, small bowls or carved figurines. A thetic sapphire. Aventurescence is a phenomenon common story to its origin purports that the Italian caused by light reflecting micro platelets in a gem glass producers discovered this particular effect by and is easily recognizable from the glittering sheen- accident, but when this was is not clear. Accounts like effect. While green mica crystals in quartz cre - of the first production date vary from one source to ates aventurine quartz, hematite and ilmenite crys - another and are stated as from 11th century to 13th tals create the same effect in sunstone feldspar. century. It is true that this rather attractive Murano glass with reddish brown speckles was a popular Out of all the phenomena seen in gems, aventures - and expensive glass production in Italy for many cence, especially the yellow-brown type, has been centuries but it is hard to believe that sunstone the subject of a long-standing discussion. -
Bullseye Glass Co. / Classes & Special Events
Bullseye Glass Co. | Classes & Special Events May to September 2012 • Emeryville, California From the Director Artist Klaus Moje at Resource Center Portland, 2007. What is Kiln-Glass? In 1974 three self-described “hippie glassblowers” started Bullseye Glass Company, a small factory for making specialty sheet glass in Portland, Oregon. While they initially focused on making colored sheets for use in stained glass, they aspired to do what had never been done before: to produce a palette of colored glasses tested to be compatible for fusing with one another for producing works in the kiln. By 1979 they had succeeded, but immediately ran into a challenge: they had created something remarkable for which almost no demand existed. Ever the innovators, they decided to embark on a long-term program of research projects working directly with artists to help pioneer and expand the technical, aesthetic and conceptual development of the field that is today known as kiln-glass. Kiln-glass is a term that describes an enormous range of techniques and outcomes that are radically more accessible than many other working methods, such as glassblowing, in which one must first develop basic physical skills for years before being able to effectively realize well-executed works. By contrast, many of the skills required for kiln-glass are things that most artists already possess: an understanding of design, composition, color theory, and the ability to conceive of layers of process and material application. And while kiln-glass does require basic knowledge of technical issues and nuances, these are readily obtained in short order through publications and curriculum that have been developed as an outgrowth of Bullseye’s years of collaboration with artists. -
Capturing, Preserving, and Sharing the Sounds of Glassmaking
arts Article Makers Marks: Capturing, Preserving, and Sharing the Sounds of Glassmaking Lisa Naas 1,* and David Faleris 2 1 School of Design, Edinburgh College of Art, University of Edinburgh, Edinburgh EH3 9DF, UK 2 Independent Composer, Glasgow G12 9SW, UK; [email protected] * Correspondence: [email protected] or [email protected] Received: 30 November 2018; Accepted: 24 January 2019; Published: 30 January 2019 Abstract: The Makers Marks Collaborative, an international team of glass artists, visual designers, composers, and engineers, embarked on a project together from 2015–2016 to use the glassmaking studio as a staging ground for interdisciplinary, collaborative making. The team aimed to capture and preserve the sounds of traditional studio glassmaking, and then to share them outside the workshop domain through digital technologies and glass art objects. The goal was also to fulfill a public engagement grant from the Royal Academy of Engineering to highlight the engineering through the art and the engineers’ vision within the art making. The team recorded and isolated the unique sounds of the glassblowing process and its studio environment, and then used the resulting digital sound collection as the foundation for developing artistic outputs: a virtual instrument library, a glass object-instrument of performance, a series of glass objects translating selected virtual instruments, and a music composition. They questioned the nature and materiality of glass through dialogue between media and conversation among team members, while exploring the practice-based research question: “How can we embed our recorded sounds of the glassmaking process back into the glass itself?” This paper focuses on the collaborative, interdisciplinary making process of the team, the project outputs, and the metaphorical language that was a key process facilitation tool. -
Got a Pocket Full of Sunstone? Maybe Think Twice
Page 1 of 5 Got a pocket full of Sunstone? Maybe think twice Sunstone falls part of the Feldspar The larger and more abundant the mineral group. It is known for inclusions are, the more exhibiting what is called “Aventurescent” the stone will be “Aventurescence”. and the deeper the golden colour will appear. There are also transparent Sunstones from Oregon in the USA. They are often green and/or red in colour, with small copper inclusions (often in “streams”) creating a Aventurescence is a type of “Schiller” effect. iridescence (a play-of-colour) that is caused by the reflection of small, thin and platy inclusions - copper, goethite and/or hematite in the case of Sunstone - that are spread in a parallel orientation through the gem. This causes interference of light between the layers of platelets which creates the glittery sheen associated with Sunstone (see image on the above right). Kaylan Khourie, FGA All rights reserved. 08/09/2019 Page 2 of 5 Sunstone falls into three species Sunstone can fall into three species of the Feldspar group: Orthoclase, Oligoclase and Labradorite (this is also into where the Oregon material falls). Orthoclase falls under the “Alkali Feldspar” category whereas Oligoclase and Labradorite fall under the “Plagioclase Feldspar” category. Below is a table of each species of Sunstone and some of their properties: Specific Refractive Species Chemical Composition Birefringence Gravity Index Orthoclase KAlSi₃O₈ 2.58 1.518 - 1.526 0.005 -0.008 Solid solution between Oligoclase 2.65 1.539 - 1.547 0.007 - 0.010 NaAlSi₃O₈ and CaAlSi₂O₈ Solid solution between Labradorite 2.70 1.559 - 1.568 0.007 - 0.010 NaAlSi₃O₈ and CaAlSi₂O₈ ↳ Oregon Solid solution between 2.67 - 2.72 1.563 - 1.572 0.009 material NaAlSi₃O₈ and CaAlSi₂O₈ However, the gems being marketed as “Sunstone” are almost always pieces of man-made glass containing an abundance of tiny copper inclusions. -
New Glass Review 10.Pdf
'New Glass Review 10J iGl eview 10 . The Corning Museum of Glass NewG lass Review 10 The Corning Museum of Glass Corning, New York 1989 Objects reproduced in this annual review Objekte, die in dieser jahrlich erscheinenden were chosen with the understanding Zeitschrift veroffentlicht werden, wurden unter that they were designed and made within der Voraussetzung ausgewahlt, dal3 sie the 1988 calendar year. innerhalb des Kalenderjahres 1988 entworfen und gefertigt wurden. For additional copies of New Glass Review, Zusatzliche Exemplare des New Glass Review please contact: konnen angefordert werden bei: The Corning Museum of Glass Sales Department One Museum Way Corning, New York 14830-2253 (607) 937-5371 All rights reserved, 1989 Alle Rechtevorbehalten, 1989 The Corning Museum of Glass The Corning Museum of Glass Corning, New York 14830-2253 Corning, New York 14830-2253 Printed in Dusseldorf FRG Gedruckt in Dusseldorf, Bundesrepublik Deutschland Standard Book Number 0-87290-119-X ISSN: 0275-469X Library of Congress Catalog Card Number Aufgefuhrt im Katalog der KongreB-Bucherei 81-641214 unter der Nummer 81-641214 Table of Contents/lnhalt Page/Seite Jury Statements/Statements der Jury 4 Artists and Objects/Kunstler und Objekte 10 Bibliography/Bibliographie 30 A Selective Index of Proper Names and Places/ Verzeichnis der Eigennamen und Orte 53 er Wunsch zu verallgemeinern scheint fast ebenso stark ausgepragt Jury Statements Dzu sein wie der Wunsch sich fortzupflanzen. Jeder mochte wissen, welchen Weg zeitgenossisches Glas geht, wie es in der Kunstwelt bewer- tet wird und welche Stile, Techniken und Lander maBgeblich oder im Ruckgang begriffen sind. Jedesmal, wenn ich mich hinsetze und einen Jurybericht fur New Glass Review schreibe (dies ist mein 13.), winden he desire to generalize must be almost as strong as the desire to und krummen sich meine Gedanken, um aus den tausend und mehr Dias, Tprocreate. -
Lemhi County, Idaho
DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY GEORGE OTIS SMITH, DIRECTOR BUIJLETIN 528 GEOLOGY AND ORE DEPOSITS 1 OF LEMHI COUNTY, IDAHO BY JOSEPH B. UMPLEBY WASHINGTON GOVERNMENT PRINTING OFFICE 1913 CONTENTS. Page. Outline of report.......................................................... 11 Introduction.............................................................. 15 Scope of report......................................................... 15 Field work and acknowledgments...................................... 15 Early work............................................................ 16 Geography. .........> ....................................................... 17 Situation and access.........................--.-----------.-..--...-.. 17 Climate, vegetation, and animal life....................----.-----.....- 19 Mining................................................................ 20 General conditions.......... 1..................................... 20 History..............................-..............-..........:... 20 Production.................................,.........'.............. 21 Physiography.............................................................. 22 Existing topography.................................................... 22 Physiographic development............................................. 23 General features...............................................'.... 23 Erosion surface.................................................... 25 Correlation............. 1.......................................... -
COBALT GLASS AS a LAPIS LAZULI IMITATION by George Bosshart
COBALT GLASS AS A LAPIS LAZULI IMITATION By George Bosshart A ~lecl<laceof round beads offered as "blue quartz from India" was analyzed by gemological and addition~~l advanced techniques. The violet-blue ornamental material, which resembled fine-q~ralitylapis lazuli, turned OLJ~LO be a nontransparent cobalt glass, unlil<e any glass observed before as a gem substit~zte.The characteristic color irregularities of lapis (whjtein blue) had been imjtated by white crystdlites of low- crjstobalite .ir~cludeclin the deep blue glass. The gemological world is accustomed to seeing gemstones from new localities, as well as new or improved synthetic crystals. With this in mind, it is not surprising that novel gem imitations are also encountered. One recent example is 'lopalitellla 400 500 600 700 convincing yet inexpensive plastic imitation of Wavelength A (nm) white opal manufactured in Japan. This article de- scribes another gem substitute that recently ap- Figure 1. Absorptio~ispectrum of a cobalt glass peared in the inarlzetplace. imitating lapis lazuli recorded ~hrougha chjp of Hearing of an "intense blue quartz from India1' approximately 2.44 inm thickness in the range of was intriguing enough to arouse the author's sus- 820 nm 10 300 nm, ot room temperature (Pye picion when a neclzlace of spherical opaque Ui7jcam SP8-100 Spectrophotometer). violet-blue 8-mm beads was submitted to the SSEF laboratory for identification. Because blue quartz in nature is normally gray-blue as a result of the refractive index of the tested material (1.508)does presence of Ti02(Deer et al.! 1975! p. 2071 or tour- not differ marlzedly from that of lapis (approxi- maline fibers (Stalder) 1967)! this particular iden- mately 1.50)/ its specific gravity of 2.453 is tification could be immediately rejected. -
Download New Glass Review 11
The Corning Museum of Glass NewGlass Review 11 The Corning Museum of Glass Corning, New York 1990 Objects reproduced in this annual review Objekte, die in dieser jahrlich erscheinenden were chosen with the understanding Zeitschrift veroffentlicht werden, wurden unter that they were designed and made within derVoraussetzung ausgewahlt, da(3 sie the 1989 calendar year. innerhalb des Kalenderjahres 1989 entworfen und gefertigt wurden. For additional copies of New Glass Review, Zusatzliche Exemplare des New Glass Review please contact: konnen angefordert werden bei: The Corning Museum of Glass Sales Department One Museum Way Corning, New York 14830-2253 (607) 937-5371 All rights reserved, 1990 Alle Rechte vorbehalten, 1990 The Corning Museum of Glass The Corning Museum of Glass Corning, New York 14830-2253 Corning, New York 14830-2253 Printed in Dusseldorf FRG Gedruckt in Dusseldorf, Bundesrepublik Deutschland Standard Book Number 0-87290-122-X ISSN: 0275-469X Library of Congress Catalog Number Aufgefuhrt im Katalog der KongreB-Bucherei 81-641214 unter der Nummer 81-641214 Table of Contents/lnhalt Page/Seite Jury Statements/Statements der Jury 4 Artists and Objects/Kunstler und Objekte 9 Bibliography/Bibliographie 30 A Selective Index of Proper Names and Places/ Verzeichnis der Eigennamen und Orte 53 Is das Jury-Mitglied, das seit dem Beginn der New Glass Review Jury Statements A1976 kein Jahr verpaBt hat, fuhle ich mich immer dazu verpflichtet, neueTrends und Richtungen zu suchen und daruber zu berichten, wel- chen Weg Glas meiner Meinung nach einschlagt. Es scheint mir zum Beispiele, daB es immer mehr Frauen in der Review gibt und daB ihre Arbeiten zu den Besten gehoren. -
Glass Shards • Page 2
GlassNEWSLETTER OF THE NATIONAL Shards AMERICAN GLASS CLUB www.glassclub.org Founded 1933 A Non-Profit Organization Autumn 2019 New Bedford Museum of Glass on the Move! After 3 months of heroic effort last Mt. Washington Glass Company, will relocation possible: Aaron Barr, Mary spring by a team of dedicated volun provide a perfect home for the muse Jo Baryza, Jeff Costa, David DeMello, teers, the New Bedford Museum of um, and we expect to open our new Brian Gunnison, Peggy Hooper, Maria Glass is happy to report that it has fully glass galleries there later this year. Martell, Luis Marquez, Charlie Moss, vacated its former premises and is now Heart-felt thanks to the following Andrea Natsios, Betsy Nelson, Eric making steady progress toward set volunteers (many NAGC members Nelson, Ross Nelson, Karen Petraglia, ting up its new gallery, library, office, among them!) who helped make our and Clint Sowle. and shop spaces in downtown New Bedford’s magnificent James Arnold Mansion! Literally thousands of ex amples of beautiful glass, including art glass, paperweights, early Ameri can glass, and studio glass by contem porary artists, have been carefully packed and moved to the new location, along with more than 50 massive dis play cases, a library of 15,000 glass reference books, and countless fasci nating odds and ends that help tell the story of approximately 2,500 years of glassmaking history. The mansion, which served as the residence in the 1870s and ’80s of William J. Rotch, the president of New Bedford’s famous The new home of the New Bedford Glass Museum. -
A Fundamental Study of Copper and Cyanide Recovery from Gold Tailings by Sulfidisation
Western Australian School of Mines Department of Metallurgical and Minerals Engineering A Fundamental Study of Copper and Cyanide Recovery from Gold Tailings by Sulfidisation Andrew Murray Simons This thesis is presented for the Degree of Doctor of Philosophy of Curtin University June 2015 STATEMENT OF AUTHENTICITY To the best of my knowledge and belief this thesis contains no material previously published by any other person except where due acknowledgment has been made. This thesis contains no material which has been accepted for the award of any other degree or diploma in any university. Andrew Murray Simons i ABSTRACT Cyanide soluble copper in gold ores causes numerous problems for gold producers. This includes increased costs from high cyanide consumption and a requirement to destroy cyanide in the tailings before discharge into a tailings storage facility. Over recent years a cyanide recycling process known as SART (sulfidisation, acidification, recycle, and thickening) has gained attention as a method to remediate the increased costs and potential environmental impact caused by using cyanidation to process copper bearing gold ores. While sulfidisation processes, such as SART, have been demonstrated within the laboratory to be effective, there are several gold processing operations using sulfidisation which report high sulfide consumption compared to the expected reaction stoichiometry. Further to this problem, there is a lack of fundamental studies of sulfidisation of cyanide solutions resulting in a poor understanding of how various process variables impact the process. This thesis details work on sulfidisation of copper cyanide solutions to systematically determine the impact of process variables and impurities on the SART process. -
For the Creative Professional Working in Hot, Warm, and Cold Glass May/June 2019
For the Creative Professional Working in Hot, Warm, and Cold Glass May/June 2019 $7.00 U.S. $8.00 Canada Volume 34 Number 3 www.GlassArtMagazine.com KilnMaster Touchscreen Programming just got really cool! • Built-in Wifi and Free App • Write and Name Your Own Programs • Remote Monitoring • Help Screens for Every Feature • Navigates like your Smartphone • Graphing • Hinged Controller for Perfect Angle • Logging • Built-in Library of Programs • Improved Diagnostics ...and so much more skutt.com/kmtwww.Skutt.com/kmt Touchscreen ControllerV3.indd 1 8/16/18 8:09 AM May/June 2019 Volume 34, Number 3 6 Independent Artist From Wind and Water to Pâtisserie The Evolution of Shayna Leib’s Sculpture by Shawn Waggoner 14 Hot Glass Studio Profile Cheyenne Malcolm’s Personal Retrospective The Artist Behind Canned Heat Glass Studios by Shawn Waggoner 20 Functional Glass Nick Deviley The Glassroots Art Show Moves to Asheville by Shawn Waggoner 26 Personal Development Creativity—Using the Rhythm and Harmony of Multiples by Milon Townsend 29 What's New 30 Winning Glass Contemporary Glass Initiatives from The Corning Museum of Glass by Kimberly Thompson 34 GAS News GAS + British Glass Biennale New Partnership and Award Supports Worldwide Innovation and Collaboration by Tess McShane for the Glass Art Society 36 Warm Glass Studio Profile Vitrum Studio’s Judith Finn Conway and Kevin O’Toole Educating a New Generation of Kiln Forming Artists by Shawn Waggoner On the cover: Shayna Leib, 6 species. Photo by Eric Tadsen www.GlassArtMagazine.com Glass Art TM • May/June -
A NEW TECHNIQUE in GLASS ART JOANNE MITCHELL a Thesis Su
PRECISION AIR ENTRAPMENT THROUGH APPLIED DIGITAL AND KILN TECHNOLOGIES: A NEW TECHNIQUE IN GLASS ART JOANNE MITCHELL A thesis submitted in partial fulfilment of the requirements of the University of Sunderland for the degree of Doctor of Philosophy August 2015 Precision Air Entrapment through Applied Digital and Kiln Technologies: A New Technique in Glass Art Joanne Mitchell PhD 2015 1 Precision Air Entrapment through Applied Digital and Kiln Technologies: A New Technique in Glass Art Joanne Mitchell 2015 Abstract The motivation for the research was to expand on the creative possibilities of air bubbles in glass, through the application of digital and kiln technologies to formulate and control complex air entrapment, for new configurations in glass art. In comparison to glassblowing, air entrapment in kiln forming glass practice is under-developed and undocumented. This investigation has devised new, replicable techniques to position and manipulate air in kiln-formed glass, termed collectively as Kiln-controlled Precision Air Entrapment. As a result of the inquiry, complex assemblages of text and figurative imagery have been produced that allow the articulation of expressive ideas using air voids, which were not previously possible. The research establishes several new innovations for air-entrapment in glass, as well as forming a technical hypotheses and a practice-based methodology. The research focuses primarily on float glass and the application of CNC abrasive waterjet cutting technology; incorporating computer aided design and fabrication alongside more conventional glass-forming methods. The 3-axis CNC abrasive waterjet cutting process offers accuracy of cut and complexity of form and scale, across a flat plane of sheet glass.