 | Giuliani, Gaston, Groat, Lee, Fallick, Anthony, Pignatelli, Isabella, Pardieu, Vincent (2020) Ruby Deposits: A Review and Geological Classification. Minerals, 10 (7) 597 doi:10.3390/min10070597 | Journal (article/letter/editorial) | | minerals Review Ruby Deposits: A Review and Geological Classification Gaston Giuliani 1, *, Lee A. Groat...is not uncommon on Earth but the gem varieties of ruby and sapphire are relatively rare. Gem corundum deposits...classification scheme for ruby deposits is described in the present paper. Ruby forms in mafic or felsic...geological environments are favorable for the presence of ruby: (1) amphibolite to medium pressure granulite facies...volcanism in continental rifting environments. Primary ruby deposits formed from the Archean (2.71 Ga) in Greenland |  | | Journal (issue) | | Koiv~il~i New Rubies from the Morogoro Area, Tanzania H. A. HLinni and I<. Schmetzer NOTES AND NEW...years, rubies have emerged from new deposits in Tanzania and Vietnam that closely resemble Burmese stones...has recently emerged from the Morogoro area of Tanzania. The loose rubies and fancy sapphires illustrated...courtesy of Andrew Sarosi, Los Angeles, CA; the 1.69-ct ruby is courtesy of Evan Caplan a ) Co., Los Angeles...economic outlook of countries such as Vietnam and Tanzania, promises both new markets and new gem materials |  | | Book | | Mineralogy and Geochemistry of Ruby Edited by Frederick Lin Sutherland and Khin Zaw Printed Edition... Mineralogy and Geochemistry of Ruby Mineralogy and Geochemistry of Ruby Editors Frederick Lin Sutherland...the Special Issue “Mineralogy and Geochemistry of Ruby” published online in the open access journal Minerals... vii Preface to ”Mineralogy and Geochemistry of Ruby” . . . . . . . . . . . . . . . . . . . . . . . ...for Special Issue “Mineralogy and Geochemistry of Ruby” Reprinted from: Minerals 2020, 10, 888, doi:10 |  | | Journal (issue) | | 7, Jul y 2003 ISSN : 1355-4565 An anorthite-ruby-pargasitepicotite assemblage Dr Karl Schmetzer 1...microprobe analyses, ruby 385 Introduction I n the mid-1990s, cabochons composed of ruby crystals in a transparent...components of this mineral assemblage. Figure 1: Ruby crystals in a matrix of colourless anorthite. Size...left: 213 x 163 mm; photo by M. Glas. JM Figure 3: Ruby and pargasite crystals in a matrix of colourless...Gemm., 2003, 28, 7, 385-391 Occasionally, the ruby crystals appear as if several platelets of different |  | | Journal (issue) | | tourmaline from Mavuco, Mozambique|Tremolite from Tanzania|Tsavorite from Ethiopia|Black star CZ sold as...Symposium|World of Gems Conference V| Gem-A Conference|World Ruby Forum 772 Gem-A Notices 786 Learning Opportunities...two decades”. The colour terms are pigeon blood ruby, royal blue and cornflower sapphire, old mine/ Muzo...Long in Myanmar has been a source of gem-quality ruby, sapphire, tourmaline, spessartine and chrysoberyl...Kyaukme District of northern Shan State, approximately 18 km southeast of Mogok (Figure 3). The region is |  | | Book (volume) | | VOL.2 Bauer, Max Precious stones J FOX LAKE DISTRICT LIBRARY 2§| ÂŁ J3RAND AVENUE 60020 - PRECIOUS...STONES A POPULAR ACCOUNT OF THEIR CHARACTERS, OCCURRENCE AND APPLICATIONS WITH AN INTRODUCTION TO THEIR...STONES PACE D. Occurrence of Precious Stones I. NATURAL CHARACTERS AND . . G8 OCCURRENCE A. Chemical...Char¬ acters .138 CONTENTS VI TAGE TAGE Occurrence of Diamond 1. India .... 2. Brazil .... 3. South...238 238 242 245 247 255 260 VOLUME II Corundum . Ruby Sapphire . Other varieties Spinel. Chrysoberyl Cymophane |  | | Book | | corundum are of particular interest, above all in the ruby variety. These are very occasionally seen in the...vitreous waxy pearly silky metallic diamond, zircon ruby, emerald, quartz turquoise moonstone gypsum hematite...(carbon for diamond) or oxides (of aluminum for ruby and sapphire, iron for hematite, silicon for quartz...different varieties of the same crystal type, e.g. ruby and sapphire, which differ in color but have the...are garnets and olivines. Take, for example, pyrope MgzAlI,Si,0,. and al- 35 mandine FesAl,Siz0 |  | | Book | | anything other than yawns is always a scarce item. But Ruby & Sapphire is just such a book-a rare combination...face and fun, the pertinent and che peculiar. Open Ruby & Sapphire and you seep into a secret world where...few of the amazing and colorful tales within. Bur Ruby & Sapphire is also 1nuch more. T he product of over...is here, a virtual encyclopedia of the subject. Ruby & Sapphire highlights: • Side-by-side photos illustrate...book on precious stones or minerals, it should be Ruby & Sapphire, which is nothing less than a tour-de-force |  | | Book | | Element Characteristics of Danburite from Mexico, Tanzania, and Vietnam Reprinted from: Minerals 2018, 8...Mazlinfalina Mohd Zin and Stephen J. Harris Diversity in Ruby Geochemistry and Its Inclusions: Intra- and Inter-...Enigmatic Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights...as a late magmatic accessory phase from Mexico, Tanzania, and Vietnam. Differences in the rare earth elements...can be found in various places around the globe. Ruby is the red variety and sapphire is the blue variety |  | | Journal (issue) | | the world 's m ost important diam ond-producing region . Certainly. African sources contin ue to produce...continuing role as the most important dia mond-producing region in the world , surpassing in overall impact even...of Tan zania and six countries in West Africa. Tanzania is the site of the first economic kim berlite...HISTORY O F DIAMOND SOURCES IN AFRICA (Co ntinued); TANZANIA The first country outside Sout h Africa to have...discovered in 19 10 (Kunz, 1911i Cobba, 1989), in the region south of Lake Victoria. In 1925, Tangan yika Dia |  | | Journal (issue) | | Authors ABOUT THE COVER: One of the most important ruby localities o f the 1990s covers a broad orea near...d u n l in Allcali Basalt: O r i g i n a n d Occurrence," by Drs. Levinson and Cook, in the Winter 1994...which we described thc occurrence of sapphircs and zircons of the Jemaa district, in central Nigeria. We...ince 1992, Mong Hsu has been a primary source of ruby available in Thailand (figure 1).Mong Hsu is a small...with dark violet to almost black sapphire cores and ruby rims (figure 2). With heat treatment, the violet |  | | Journal (issue) | | Shigley, and Y a n Liu NOTES AND NEW TECHNIQUES Ruby and Sapphire from the Southern Ural Mountains, Russia...Kissin Gem Corundum in Alkali Basalt: Origin and Occurrence A. A. Levinson and P. A. Cook REGULAR FEATURES...characteristic color of the diamond in the proper region of color space, so the GIA GTL color-description...terminology boundaries are due to the natural occurrence and relative rarity of various diamond colors...THE By Alexander J. Kissin Primary occurrences of ruby, pink sapphire, sapphires of other colors, and spinel |  | | Book | | . . . . . . . . . . . . . . . . . . Mode of Occurrence. . . . . . . . . . . . . . . . . . . . . . ....Classification of Minerals – 34 2.3 Mode of Occurrence – 35 2.4 Rock-Forming and Economic Minerals...However, the chemical and 35 2.3 · Mode of Occurrence based on a combination of chemical and structural...examples for subdivisions are listed. 2.3  Mode of Occurrence For describing and identifying a mineral, not...chemical properties are of interest, but also its occurrence in nature. This knowledge is indispensable for |  | | Book (volume) | | STONES A POPULAR ACCOUNT OF THEIR CHARACTERS, OCCURRENCE AND APPLICATIONS WITH AN INTRODUCTION TO THEIR...that the nearest occurrence of mica was over 200 miles away and the nearest occurrence of obsidian over...over 1500 miles away in the region of the Yellowstone River The past several centuries have seen the rise...artificial gemstones has made immense strides. Synthetic ruby, sapphire, star sapphire, emerald, spinel, rutile...basic species of garnet are recognized : Mg 2. Pyrope Almandite Fe 3 Al 2 (Si0 4) 3 3. Spessartite |  | | Journal (issue) | | composition. p. 321 354 Mineral Inclusions in Ruby and Sapphire from the Bo Welu Gem Deposit in Chanthaburi...abalone shell blister • Large laboratory-grown star ruby and sapphire • Laboratory-grown sapphire with unusual...inclusions • Merelaniite in gem diopside from Merelani, Tanzania • Dravite from Mozambique with pyrite inclusions...Hyderabad contains emerald, ruby (including some recently replaced treated ruby), and Damascus steel with...merchants were particularly successful with the ruby trade from the city of Pegu (in modern-day Myanmar) |  | | Journal (issue) | | Quartz Photomicrography Techniques and Equipment Ruby and Sapphire from Tajikistan The Micro-World of...ARTICLES pg. 135 112 Dual-Color Double Stars in Ruby, Sapphire, and Quartz: Cause and Historical Account...Zamoniddin Z. Nasriddinov This large marble-hosted occurrence in the Pamir Mountains is a potentially productive...productive source of corundum, including ruby with a bright red color reminiscent of “pigeon’s blood” Burmese...Partially filled blue chalcedony • Presumably oiled ruby • Unusual combination of inclusions in synthetic |  | | Report (volume) | | Nome and Norton Bay regions 3 30 Copper River district 3 30 Logarithm tables 3 Regulations 30 3 Instructions...report on the lead and zinc deposits of the Ozark region, by H. F. Bain, with an introduction by C. R. Van...xxvi-xli. Geology and ore deposits of Elkhorn mining district, Jefferson County, Mont., by W. H. Weed, with...Price, 85 cents. XLIII. The Mesabi iron-bearing district of Minnesota, by C. K. Leith. 1903. 316 pp., 33...pls. Price, $1. XLV. The Vermilion iron-bearing district of Minnesota, with atlas, by J. M. Clements. 1903 |  | | Journal (volume) | | of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...History of mineralogy: The role of the Carpathian region in the 18th century..............................investigation of redox processes. For Fe, the pre-edge region provides an almost direct way of quantifying the...investigations. Fig. 1: Optical micrograph showing occurrence of the outermost limefree zone (I), the transition...individual clinker minerals can indicate the modes of occurrence of elements commonly absent in usual fuels or |  | | Journal (article/letter/editorial) | | 16001300 Ma mica dates in the 1780-1700 Ma Black Hills Orogen, South Dakota, USA P.S. DAHL1* AND K.A. FOLAND2...USA The crystalline core of the southern Black Hills (SBH), South Dakota, exposes an extensive, low P-high...Neoproterozoic sedimentary sequences in the North Atlantic region Fluorine and Barium remobilization in 2.4 Ga low...Neoproterozoic sedimentary sequences in the North Atlantic region. These include the late Neoproterozoic Sørøy Succession...formations, in the Quadrilátero FerrĂfero mining district. It is located in the south of the SĂŁo Francisco |  | | Report (volume) | | Digest of decisions concerning water in the arid region.............. Special reports on Alaska .........etc. (published in 1899)....;.. Cape Nome Gold Region (published in 1900)................... Index to...viii-ix. The physical geology of the Grand Canon district, by Clarence E. Button, pp. 47-166, pis. x-xxxvi...of'the geology of the Comstock lode and the Wash oe district, by George F. Becker, pp. 291-330, pis. xlvi-xlvii...xviii-xxiii. Abstract of report on'geology of the Eureka district, Nevada, by Arnold Hague, pp. 237-290, pis. xxiv-xxv |
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