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Download PDF About Minerals Sorted by Mineral Name
MINERALS SORTED BY NAME Here is an alphabetical list of minerals discussed on this site. More information on and photographs of these minerals in Kentucky is available in the book “Rocks and Minerals of Kentucky” (Anderson, 1994). APATITE Crystal system: hexagonal. Fracture: conchoidal. Color: red, brown, white. Hardness: 5.0. Luster: opaque or semitransparent. Specific gravity: 3.1. Apatite, also called cellophane, occurs in peridotites in eastern and western Kentucky. A microcrystalline variety of collophane found in northern Woodford County is dark reddish brown, porous, and occurs in phosphatic beds, lenses, and nodules in the Tanglewood Member of the Lexington Limestone. Some fossils in the Tanglewood Member are coated with phosphate. Beds are generally very thin, but occasionally several feet thick. The Woodford County phosphate beds were mined during the early 1900s near Wallace, Ky. BARITE Crystal system: orthorhombic. Cleavage: often in groups of platy or tabular crystals. Color: usually white, but may be light shades of blue, brown, yellow, or red. Hardness: 3.0 to 3.5. Streak: white. Luster: vitreous to pearly. Specific gravity: 4.5. Tenacity: brittle. Uses: in heavy muds in oil-well drilling, to increase brilliance in the glass-making industry, as filler for paper, cosmetics, textiles, linoleum, rubber goods, paints. Barite generally occurs in a white massive variety (often appearing earthy when weathered), although some clear to bluish, bladed barite crystals have been observed in several vein deposits in central Kentucky, and commonly occurs as a solid solution series with celestite where barium and strontium can substitute for each other. Various nodular zones have been observed in Silurian–Devonian rocks in east-central Kentucky. -
Tiger's Eye Is Not a Pseudomorph Glenn Morita in the Early 1800’S, Mineralogists Recognized That Tiger’S Eye Was a Fibrous Variey of Quartz
Minutes of the 05/20/03 Westside Board Meeting VP Stu Earnst opened the meeting at 7:31pm. Treasurer’s report read by Kathy Earnst. Minutes approved as published in the newsletter. Old business: Lease on Walker valley discussed. The expiration notice was sent but we are not sure who it went to. We do not see any obstacle to renewal as communication between the council and DNR are open and ongoing. Special thanks, to DNR representative, Laurie Bergvall and DNR staff for their time and effort in hearing our concerns and working towards mutually beneficial solutions on the Walker Valley issues. Sign production is on hold until the sign committee decides where and what the signs will say. We have decided that they will not be on the gate but separate from it. There will be a gate going up at Walker Valley but we will have access to that lock and it will probably be a combo type of thing that we can easily give to other rockhound clubs going there. Talked about the possibility of posing the combo on website but that will depend on the type of gate they put up and what ends up being possible with the mechanics of that gate. New business: Thank you from Bob Pattie and Ed Lehman to Bruce Himko and AAA Printing for donation of the paper. Thank you to Danny Vandenberg for providing sample Walker Valley Material to DNR to show the value of the material we are trying to preserve and enjoy. Bob Pattie is pursuing with the retrieval of our state seized funds through the unclaimed property process. -
City of St. Peters Board of Aldermen Tentative Agenda for Regular Meeting St
CITY OF ST. PETERS BOARD OF ALDERMEN TENTATIVE AGENDA FOR REGULAR MEETING ST. PETERS JUSTICE CENTER, 1020 GRAND TETON DRIVE, ST. PETERS, MO 63376 OCTOBER 22, 2020 – 6:30 P.M. A. Call to Order, Mayor Len Pagano B. Roll Call C. Opening Ceremonies 1. Invocation 2. Pledge of Allegiance 3. Proclamations: National Arts and Humanities Month, Jill Tutt 4. Presentation: No Hunger Holiday, Mike Narkawicz 5. Recognition: Random Acts of Kindness D. Approval of Minutes: The Board of Aldermen Work Session meeting of October 8, 2020; and the Regular Board of Aldermen meeting of October 8, 2020. E. Reports of Officers, Boards and Commissions 1. Mayoral Report of Appointments to Boards and Commissions a. Appointment to the Veterans Memorial Commission 2. City Administrator’s Report: 3. Report of Director, Planning, Community and Economic Development: 4. St. Peters Business Spotlight: None F. Open Forum 1. Citizens Petitions and Comments 2. Communications from the Elected Officials 3. Announcements G. Public Hearings: None H. Unfinished Business Items: None I. New Business Items: 1. Bill No. 20-118: Bill authorizing the City Administrator of the City of St. Peters, Missouri, to execute a Certain Subrecipient Agreement between St. Charles County (Grantee) and the City of St. Peters (Subrecipient) for conducting City Community Development Block Grant (CDBG) Programs with 2020 Federal Funding 2. Bill No. 20-119: Bill of the City of St. Peters, Missouri, deleting Chapter 615 of the Code of the City of St. Peters, Missouri, in its entirety; enacting, in lieu thereof, a new Chapter 615; and providing for the licensing and regulation of body art establishments and body artists 3. -
Download Course Outline for This Program
Program Outline 434- Jewellery and Metalwork NUNAVUT INUIT LANGUAGES AND CULTURES Jewelry and Metalwork (and all fine arts) PROGRAM REPORT 434 Jewellery and Metalwork Start Term: No Specified End Date End Term: No Specified End Date Program Status: Approved Action Type: N/A Change Type: N/A Discontinued: No Latest Version: Yes Printed: 03/30/2015 1 Program Outline 434- Jewellery and Metalwork Program Details 434 - Jewellery and Metalwork Start Term: No Specified End Date End Term: No Specified End Date Program Details Code 434 Title Jewellery and Metalwork Start Term No Specified End Date End Term No Specified End Date Total Credits Institution Nunavut Faculty Inuit Languages and Cultures Department Jewelry and Metalwork (and all fine arts) General Information Eligible for RPL No Description The Program in Jewellery and Metalwork will enable students to develop their knowledge and skills of jewellery and metalwork production in a professional studio atmosphere. To this end the program stresses high standards of craftship and creativity, all the time encouraging and exposing students to a wide range of materials, techniques and concepts. This program is designed to allow the individual student to specialize in an area of study of particular interest. There is an emphasis on creative thinking and problem-solving throughout the program.The first year of the program provides an environment for the students to acquire the necessary skills that will enable them to translate their ideas into two and three dimensional jewellery and metalwork. This first year includes courses in: Drawing and Design, Inuit Art and Jewellery History, Lapidary and also Business and Communications. -
The Wittelsbach-Graff and Hope Diamonds: Not Cut from the Same Rough
THE WITTELSBACH-GRAFF AND HOPE DIAMONDS: NOT CUT FROM THE SAME ROUGH Eloïse Gaillou, Wuyi Wang, Jeffrey E. Post, John M. King, James E. Butler, Alan T. Collins, and Thomas M. Moses Two historic blue diamonds, the Hope and the Wittelsbach-Graff, appeared together for the first time at the Smithsonian Institution in 2010. Both diamonds were apparently purchased in India in the 17th century and later belonged to European royalty. In addition to the parallels in their histo- ries, their comparable color and bright, long-lasting orange-red phosphorescence have led to speculation that these two diamonds might have come from the same piece of rough. Although the diamonds are similar spectroscopically, their dislocation patterns observed with the DiamondView differ in scale and texture, and they do not show the same internal strain features. The results indicate that the two diamonds did not originate from the same crystal, though they likely experienced similar geologic histories. he earliest records of the famous Hope and Adornment (Toison d’Or de la Parure de Couleur) in Wittelsbach-Graff diamonds (figure 1) show 1749, but was stolen in 1792 during the French T them in the possession of prominent Revolution. Twenty years later, a 45.52 ct blue dia- European royal families in the mid-17th century. mond appeared for sale in London and eventually They were undoubtedly mined in India, the world’s became part of the collection of Henry Philip Hope. only commercial source of diamonds at that time. Recent computer modeling studies have established The original ancestor of the Hope diamond was that the Hope diamond was cut from the French an approximately 115 ct stone (the Tavernier Blue) Blue, presumably to disguise its identity after the that Jean-Baptiste Tavernier sold to Louis XIV of theft (Attaway, 2005; Farges et al., 2009; Sucher et France in 1668. -
Preliminary Investigation of Purple Garnet from a New Deposit in Mozambique
GIT GEMSTONE UPDATE Preliminary Investigation of Purple Garnet from a New Deposit in Mozambique By GIT-Gem testing laboratory 11 May 2016 Introduction In March 2016, a group of Thai gem dealer led by Mr. Pichit Nilprapaporn paid a visit to the GIT and informed us about a new garnet deposit in Mozambique, that was discovered near the western border with Zimbabwe. They also displayed a large parcel of rough and a few cut stones claimed to be the material found in this new deposit (Figure 1). According to the stone’s owner, these garnet specimens were unearthed from an unconsolidated sediment layer, just a few meters below ground surface. This brief report is our preliminary investigation on the interesting vivid purple garnet from the new deposit in Mozambique. Figure 1: Mr. Pichit Nilprapaporn (center), the stone’s owner, showing a large parcel of purple gar- net roughs claimed to be from a new deposit in Mozambique to the GIT director (left). The Gem and Jewelry Institute of Thailand (Public Organization) 140, 140/1-3, 140/5 ITF-Tower Building. 1st - 4th and 6th Floor,Silom Road, Suriyawong, Bangrak, Bangkok 10500 Thailand Tel: +66 2634 4999 Fax: +66 2634 4970; Web: http://www.git.or.th; E-mail: [email protected] 11 May, 2016 Preliminary Investigation of Purple Garnet from a New Deposit in Mozambique 2 Samples and Testing Procedure The stone’s owners donated some specimens (one 6.10 ct oval-facetted stone and 13 rough samples weighing from 3.83 to 9.43 cts) to the GIT Gem Testing Laboratory for studying. -
Renowned for His Iconic Designs and Breathtaking Gem Collections, Harry Winston Was a Man Who Knew the True Value of a Diamond
A BRILLIANT LEGACY Renowned for his iconic designs and breathtaking gem collections, Harry Winston was a man who knew the true value of a diamond. BY ALLISON HATA 54 A diamond is anything but just another stone. Highly coveted, precious and exceedingly rare, diamonds can take on different meanings: a symbol of status, a statement of love or a sign of purity. “Diamonds are a physical connection to [the earth] other than our feet on the ground,” says Russell Shor, a senior industry analyst for the Gemologist Institute of America. “When the earth was young and there was volcanic mass seething inside—this is how diamonds were formed. Diamonds connect us to that.” One man understood this intrinsic connection and dedicated his life to bringing the world closer to the precious gem through his jewelry designs and generous gifts to national institu- tions. Known as the “king of dia- monds,” the late Harry Winston was the first American jeweler to own and cut some of the most iconic stones in history, in addi- tion to setting a new standard for jewelry that showcases a gem’s natural beauty. Born more than a century ago, the young Winston—the son of a small jewelry shop owner—demonstrated a natural instinct for examining diamonds and precious gems. In subsequent years, he cultivated this talent to become one of the most prominent diamond merchants and designers of his time. His legacy lives on through the house of Harry Winston, which pairs his classic vision with a contemporary sensi- bility to create modern pieces that still grace the red carpet today. -
HIGHLIGHTS and BREAKTHROUGHS Sapphire, A
1 HIGHLIGHTS AND BREAKTHROUGHS 2 Sapphire, a not so simple gemstone 3 F. LIN SUTHERLAND1* 4 1Geoscience, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia. 5 *E-mail: [email protected] 6 Abstract: Sapphire is a gemstone of considerable reach and is much researched. It still delivers scientific surprises, as exemplified by a 7 recent paper in American Mineralogist that re-interprets the origin of needle-like rutile inclusions that form “silk” in sapphires. 8 Understanding of variations in sapphire genesis continues to expand. Keywords: Sapphire, inclusions, trace elements, genesis 9 Sapphire as a gem variety of corundum has wide use in the gem trade as one of the more historically valuable colored gem stones 10 (CGS) and is mined from a great variety of continental gem deposits across the world. A masterly compendium on this gemstone and its 11 ramifications is recently available (Hughes 2017). As a gem, sapphire ranges through all the colors of corundum, except where 12 sufficient Cr enters its α-alumina crystal structure and causes the red color of the variety ruby. Sapphire, as a key pillar in a wide 13 economic network of gem enhancing treatments, jewelry and other manufacturing enterprises, has elicited numerous scientific and 14 gemological enquiries into its internal nature and natural genesis and subsequent treatments. A further use of sapphire as a synthetic 15 material with a great variety of purposes also has triggered a proliferation of detailed studies on its growth, properties and other element 16 substitutional effects (Dobrovinski et al. 2009). Even with this vast range of studies, this apparently simple gemstone still yields 17 controversies and breakthroughs in understanding its genetic formation. -
Blue Diamond Prices Are on the Rise
This copy is for your personal, non-commercial use only. To order presentation-ready copies for distribution to your colleagues, clients or customers visit http://www.djreprints.com. https://www.barrons.com/articles/blue-diamond-prices-are-on-the-rise-1518037930 Blue Diamond Prices Are on the Rise By Ariel R. Shapiro Feb. 7, 2018 4:12 p.m. ET The fancy color diamond market is on the upswing, according to a report, with blue diamonds seeing the largest gains. Blue diamonds saw a 5.9% increase in value in the fourth quarter of 2017 in a year-over-year comparison, according to data published on Feb. 1 by the Fancy Color Research Foundation (FCRF). Pink and yellow diamond prices decreased slightly in the same period, at 0.8% and 1.8%, respectively. The market overall was up 0.1%. A fancy vivid blue diamond ring (est. $14-18 million) goes on view at Sotheby's on Oct. 13, 2017 in London. ILLUSTRATION: GETTY IMAGES FOR SOTHEBY'S In November 2017, Christie’s sold a 8.67-carat fancy intense blue diamond ring in Geneva, Switzerland for $13.2 million. The reason for this disparity has less to do with demand, than it does with the rarity of the stone, says FCRF Chairman Eden Rachminov. Demand for yellow and pink diamonds is actually higher, but the amount of blue diamonds being mined is decreasing. “Almost nothing is coming out of the ground,” he says. Pink diamonds have seen the highest gains in the last 13 years with an overall appreciation of 361.9%, according to FCRF’s index, which is compiled through survey data provided by manufacturers and brokers. -
Symposium on Agate and Cryptocrystalline Quartz
Symposium on Agate and Cryptocrystalline Quartz September 10 – 13, 2005 Golden, Colorado Sponsored by Friends of Mineralogy, Colorado Chapter; Colorado School of Mines Geology Museum; and U.S. Geological Survey 2 Cover Photos {top left} Fortification agate, Hinsdale County, Colorado, collection of the Geology Museum, Colorado School of Mines. Coloration of alternating concentric bands is due to infiltration of Fe with groundwater into the porous chalcedony layers, leaving the impermeable chalcedony bands uncolored (white): ground water was introduced via the symmetric fractures, evidenced by darker brown hues along the orthogonal lines. Specimen about 4 inches across; photo Dan Kile. {lower left} Photomicrograph showing, in crossed-polarized light, a rhyolite thunder egg shell (lower left) a fibrous phase of silica, opal-CTLS (appearing as a layer of tan fibers bordering the rhyolite cavity wall), and spherulitic and radiating fibrous forms of chalcedony. Field of view approximately 4.8 mm high; photo Dan Kile. {center right} Photomicrograph of the same field of view, but with a 1 λ (first-order red) waveplate inserted to illustrate the length-fast nature of the chalcedony (yellow-orange) and the length-slow character of the opal CTLS (blue). Field of view about 4.8 mm high; photo Dan Kile. Copyright of articles and photographs is retained by authors and Friends of Mineralogy, Colorado Chapter; reproduction by electronic or other means without permission is prohibited 3 Symposium on Agate and Cryptocrystalline Quartz Program and Abstracts September 10 – 13, 2005 Editors Daniel Kile Thomas Michalski Peter Modreski Held at Green Center, Colorado School of Mines Golden, Colorado Sponsored by Friends of Mineralogy, Colorado Chapter Colorado School of Mines Geology Museum U.S. -
Compilation of Reported Sapphire Occurrences in Montana
Report of Investigation 23 Compilation of Reported Sapphire Occurrences in Montana Richard B. Berg 2015 Cover photo by Richard Berg. Sapphires (very pale green and colorless) concentrated by panning. The small red grains are garnets, commonly found with sapphires in western Montana, and the black sand is mainly magnetite. Compilation of Reported Sapphire Occurrences, RI 23 Compilation of Reported Sapphire Occurrences in Montana Richard B. Berg Montana Bureau of Mines and Geology MBMG Report of Investigation 23 2015 i Compilation of Reported Sapphire Occurrences, RI 23 TABLE OF CONTENTS Introduction ............................................................................................................................1 Descriptions of Occurrences ..................................................................................................7 Selected Bibliography of Articles on Montana Sapphires ................................................... 75 General Montana ............................................................................................................75 Yogo ................................................................................................................................ 75 Southwestern Montana Alluvial Deposits........................................................................ 76 Specifi cally Rock Creek sapphire district ........................................................................ 76 Specifi cally Dry Cottonwood Creek deposit and the Butte area .................................... -
Distinctive Designs
Distinctive Designs Brides Ring in an Era of Self-Expression by Stacey Marcus Diamond rings have been sporting the hands of newly can elevate a traditional setting to an entirely new level. While engaged women since ancient times. In the mid 1940s, diamonds are always in vogue for engagement rings, millen- DeBeers revived the ritual with its famous “Diamonds Are nials are also opting for nontraditional stones, such as color- Forever” campaign. Today’s brides are blazing new trails by changing alexandrite, beautiful tanzanite, black opal, and even selecting nontraditional wedding rings that express their aquamarine. We are in an age when anything goes, and brides individual style. are embracing the idea of individuality and self-expression!” True Colors says Jordan Fine, CEO of JFINE. “Brides today want to be unique and they don’t mind taking Kathryn Money, vice president of strategy and merchandising chances with colors, settings, and stones. When it comes to at Brilliant Earth agrees: “Customers are seeking products that choosing an engagement ring, natural pink, blue, and even express their individuality and are increasingly drawn towards green diamonds are trending. These precious and rare dia- uniqueness. They want a ring that isn’t like everyone else’s, monds originate from only a few mines in the world, and they which we’re seeing manifested in many different ways, such 34 Spring 2018 BRIDE&GROOM as choosing a distinctive ring setting, using colored gemstones in lieu of a diamond, using a fancy (non-round) diamond, or opting for rose gold.” Money adds that 16% of respondents in a recent survey they conducted favored a colored gemstone engagement ring over a diamond.