 | | Book (edition) | | ........................................... . Emerald .................................................1'-fontn.nn.result.eel iu n. lnrge out-put. The mines of the Yogo American Snppliire Co. nnd of the New... Englis~ of Shelby, N. C., for information on emerald occurrences in North tJarolina. AGATE. MONTANA...pntches of the same color. Reddish-brown, red, nnd bright-red dendrites, banding, and other markings also...patches, patterns are obtained that resemble moss, sea ~rowths, ferns, rushes, t1·ee~, and even lo.~dscn |  | | Journal (article/letter/editorial) | | sent R & M a number of specimens from the copper mines of his town. The specimens are extremely beautiful...When it comes to beautiful minerals, the copper mines of Arizona rank high in the mineral world. Arkansas—At...Counties, Colo.—monazite, garnet, chlorite, pyroxene (augite, diopside, hypersthene), amphibole (hornblende...make weekend excursions to the Wilmington strip mines where we find 273 the usual fern fossils and some...combustion. Bright red hematite (red ocher) is also found with the sulfur, the red and yellow making a |  | | Journal (issue) | | Pisciotta The Wadi Natrun evaporite deposits, Western Desert, Buhayara Governate, Egypt ................Ohio, in the northern Michigan iron and copper mines, at Magnet Cove in Arkansas, and at various other...Kjellman2 Jörgen Langhof 3 The ancient Nordmark mines in the Bergslagen District of south-central Sweden...15 mining fields, each containing several iron mines, have been worked there over the centuries. The...may have been widespread in the various Nordmark mines (Flink, 1885, 1914). 1 The Mineralogical Record |  | | | | eroded from rocks in central Egypt and deposits it in the delta and the sea, ROCKS Volcanic activity...like this group, may have milky, etched faces. Augite crystal Rock matrix 3 PYROXENE 3 FELDSPAR 2...developed, single black crystal of augite (a pyroxene) comes from Italy. Augite crystals are found in various...of a mine roof colored chalcanthite ORE Orange-red crystals of the mineral wulfenite from Arizona are...fallen from above. This is gradually broken oy by the sea and sorted into pebbles, gravel, i eee GRAINS Orie |  | | Book | | Origin 3. Hydrothermal Gem Deposits: 35 39 The Emerald Deposits of Colombia 4. Gemstones Formed in Pegmatites:...Sheet Gem Deposits: 115 119 The Zabargad Island, Egypt, Peridot Deposits 9. Diamond Pipes: 129 The Diamond...three chapters: hydrothermal deposits, with the emeralds of Colombia as an example; the pegmatites of Minas...respectively. The classic peridot of Zabargad Island, Egypt and the new find at Argyle in Western Australia...Australian opal deposits. The chapter on Colombian emeralds was reviewed by Dr. John Sinkankas. Dr. Alan Jobbins | | | Book | | Origin 3. Hydrothermal Gem Deposits: 35 39 The Emerald Deposits of Colombia 4. Gemstones Formed in Pegmatites:...Sheet Gem Deposits: 115 119 The Zabargad Island, Egypt, Peridot Deposits 9. Diamond Pipes: 129 The Diamond...three chapters: hydrothermal deposits, with the emeralds of Colombia as an example; the pegmatites of Minas...respectively. The classic peridot of Zabargad Island, Egypt and the new find at Argyle in Western Australia...Australian opal deposits. The chapter on Colombian emeralds was reviewed by Dr. John Sinkankas. Dr. Alan Jobbins |  | | Book | | tangled mass of fine, blackishgreen needles with shiny red grains between them. The freshly fractured surface...name to you. The green needles are hornblende, the red grains are nothing else but garnets, the same 'garnet'...of quartz and mica, and eclogite of garnet and augite. There are also rocks which consist of fragments...found and smelted. Remains of Bronze Age copper mines can be found, for instance, in various parts of...choice of three colors: black, red and yellowish-brown. Two of these, red and yellowish-brown, were supplied |  | | Book | | eroded fron1 rocks in central Egypt and deposits it in the delta and the sea, where it 111ay evenh.1ally...like this group, rnay have milky, etched facl:'5. Augite crystal ~ - Rock matrix 3 PYROXENE 3 FELDSPAR...developed, single black crystal of augite (a pyroxene) conies fron1 Italy. Augite crystals are (ound in various...chalcanthite I CRYSTALS FROM MINERAL ORE Orange-red crysta ls of the 1nineral wulfenite from Arizona...from above. This is gradually broken tip by the sea and sorted into pebbles, gravel, . GRADED GRA INS |  | | Book | | mine, known for Yeryfine, rare, pink diamonds. Emerald, alexandrite, garnet, and tourmaline are all significantly...tanzanite and the lusciously nch greener-than-emerald tsavorite. Unique geochemistry in the area holds...Tsavo West National Park, Kenya 44 Chapter 4. Emerald and Alexandrite from Tanzania 49 Location 50 History...East Africa Elbaite Tourmaline from Tanzania 96 Red Dravite Tourmaline from the Narok District, Kenya...Mota) Mine, Tanzania, emerald. 51 Figure 4.2. Map of the Manyara (Maji Mato) emerald mine, Tanzania.52 Figure |  | | Book | | their real size. PROUSTITE _ Crystals of cherry-red proustite are known as ruby silvers and are ~ often...silver mine area at Chanarcillo, Copiapo, Chile. The mines were extensively worked between 1830 and 1880. ...crystals, some of which are slightly tinged with red. 11 Crystals — outside... IN CONTACT A contact...compact structure. This structure makes diamond Augite crystal eee ow ee ® ® Structural nie of Posi ...& — pe . jem een atom i ! a J including augite. Their internal structure is based on a single |  | | Journal (article/letter/editorial) | | (Ceylon)precious stones arefound,of various colors, red,greenandyellow,mostof whicharewashed from cavern•or...instance, Colombia at presentis not producing emeralds to thevaluestated,but as it is the principalsource...accountsfor 94.3 per cent.;and sapphire,amber,emerald,ruby, jadeite,turquoiseand opaltogetheranother4................................................ Emerald .................. ; .......... $76,xx2,5oo................ Colombia ............... 5o0,00o Egypt .................. British Guiana .......... 25o |  | | Book | | Did you know that early Spanish explorers took emeralds from the Indians of Central and South America...31 31 8. PUMICE, RHYOLITE, BASALT HORNBLENDE, AUGITE MICAS COPPER IRON 1 2. 9. GABBRO 9 . 32...GYPSUM 34 36 35 15 39. DIAMONDS 16 40. EMERALDS AND SAPPHIRES 17 41 RUBY, ALBITE 41 18 42...SCHISTS JADEITE 23. BROWN MARBLE 23 47. 24. RED SLATE, GRAY SLATE 24 48. PETRIFIED P GOLDEN Western... volcanoes of Melted rock spitting out we red-hot IN FIRE think into igneous rocks. The Hawaiian |  | | Book | | changes in sea levels can swamp entire continents or make new landmasses rise from the sea. Since Lyell’s...very fine Hardness: 2-3 @ @ Color: gray, blue, red, brown, yellow Texture: stretchy when wet Look-alike:...smectite, illite @ Color: gray, brown, green, red @ @ Grain size: very fine Hardness: 3 @ @ Common...An organic, tropical soul, offen made from dead sea creatures Graceful in sheer white, | form in balmy...Mineral: calcite @ Color: white, gray, yellow, red @ Grain size: fine to coarse @ Texture: bedded |  | | Book (edition) | | result of fire and pressure, temperature changes, sea wave or current and the fickle fingers of the storm...marl or the glowing crystals we term ruby and emerald and opal, are examples, respectively, of the types...greywacke pebbles were born in the bed of an ancient sea; a rounded limestone is the cemetery of marine culae...beauty, only a brown, dusty pebble. Green-fire emeralds, the costliest objects known, were dug from caves...by boring and the bulldozer. Though diamond and emerald fields evade search, though bitumen, graph ite |  | | Report (issue) | | Chief Geologist i FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian...have made them sound financial investments. The emerald, considered by many to be the most beautiful of...the largest emerald crystal in North America — 1,438 carats. The most expensive cut emerald also comes...North Carolina. This is the 15.14 carat Carolina Emerald owned by Tiffany f, Company of New York and valued...valued at $100,000. First thought to be emerald but later identified as a chromium spodumene, the mineral | | | Report (issue) | | AND TORBERNITE THULITE AND PYRITE MONAZITE EMERALD CUPRITE SMOKY QUARTZ ZIRCON TORBERNITE ~/...Allen, Chief Geologist FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian...have made them sound financial investments. The emerald, considered by many to be the most beautiful of...the largest emerald crystal in North America -- 1,438 carats. The most expensive cut emerald also comes...North Carolina. This is the 13.14 carat Carolina Emerald owned by Tiffany valued at $100,000. & Company |  | | Book (volume) | | Spinel. Chrysoberyl Cymophane Alexandrite Beryl . Emerald . Precious beryl (Aq uamarine, ive.) . Euclase...stones.569 Lilac and rose-coloured stones . . 570 Red stones.570 Reddish-brown stones . . . .571 Smoke-grey...stones.579 Yellow and brown stones . . . 579 Rose-red, red, and lilac stones . . 580 Stones with more than...Florentine ..... 250 „ 11a, 6. Sancy.250 „ 12. Pasha of Egypt .... 251 „ 13a, 6, c. Nassak ..... 251 ,, 14. Star...BERYL AND CHRYSOBERYL Fig. 1. „ .... ., 3. Emerald, cut ., 4. Beryl (golden beryl), crystal 5 |  | | Book (edition) | | used in rings, cameos, and drinking vessels in Egypt over 3,000 ago. (answers on the back flap) we...Species Ruby 98 A papphe ae 106 Beryl Species Emerald 106 Aquamarine 110 Precious Beryl 112 ~ 114 Chrysoberyl...jasper, coral, lapis lazuli, pearl, serpentine, emerald, and turquoise. These stones were reserved for...The English Imperial State Crown with rubies, emeralds, sapphires, pearls, and more than 3000 diamonds...(compare also “Cullinan |.,” page 78, No. 3). The large red stone above “Cullinan II.” is the so-called “Black |  | | Book | | Artemision Bronze Diamond Koh-i-noor Diamond Ancient Egypt Hope Diamond 8 10 12 14 16 18 20 22 24 26 28 30...Albite Bytownite Lapis lazuli Jewels of ancient Egypt Sodalite Haüyne Kiani Crown Scapolite Pollucite...flamingo brooch Tourmaline Crown of the Andes Emerald Topkapi emerald dagger Beryl Dom Pedro Aquamarine Modern...Whether it’s the abundance of green or the danger of red, we have actually evolved to look for colors, and...diamond, tanzanite, ruby, kyanite, celestine, emerald, tourmaline, and aquamarine. Other types of gem |  | | Book | | recognize that our earth once circled the sun as a red-hot glowing sphere, many billions of years ago -...view of the crust in mines. The deepest mine shafts are those of the gold mines in the Witwatersrand...became the term for the material recovered from mines or shafts. Today, the field of mineralogy is much... The high standards of the goldsmithing art in Egypt are evidenced by the superb treasures found in the...Lonicerus (1679) believed gold to be a mixture of clear red sulfur and clear white quicksilver. Sharply developed | | | Book | | part of th is publicatio n may be reproduced, sto red in a retrieva l system, or tra nsm itted in a ny...eroded from rocks in central Egypt and deposits it in the delta and sea, where it may eventually forrn...li ke this group, may have milky, etched faces. Augite crystal _ _ Rock matrix 3PYROXENE 3 FEl,DSPAR...8 This well-developed, single black c1ystaJ of augite (a pyroxene) comes fro m Italy. Augi te ctystals...of the copper mineral, chalcant hile RAL Orange red tabular crystals of the mineral wulfenite from Arizona |  | | Journal (issue) | | Burmese Sapphire and Peridot from Mogok History of Emerald Mining at Habachtal, Part I New Regular Feature:...Sapphire and Peridot from Mogok and a History of Emerald Mining in Habachtal, Austria Duncan Pay FEATURE...is available in large sizes. 338 History of Emerald Mining in the Habachtal Deposit of Austria, Part...region, which is regarded as one of the earliest emerald deposits. p. 373 REGULAR FEATURES 372 Lab Notes...of antique Mughal spectacles with diamond and emerald lenses • Pink euclase • Vaterite on strand of freshwater |  | | Book | | 151 Prase 151 152 152 155 156 157 Sardonyx Emerald 158 161 162 163 166 168 175 178 PAGE 180 181...aluminous silicates are the species of garnet, emerald, felspar, and porphyry. Gems two distinct modes...will only break into irregular fragments. and emerald, SPECIFIC GRAVITY. In order to determine the...names which often given to the same substance. The red are corundum is the oriental ruby ; the blue...oriental topaz. less value in The bluish-green emerald Quartz has called beryl. is is is the now |  | | Book (edition) | | Hematite Prasiolite 136 Rose Quartz 138 Sard 142 Emerald 106 176 176 178 Pyrite 136 Chalcedony 142...jasper, coral, lapis lazuli, pearl, serpentine, emerald, and turquoise. These stones were reserved for...The English Imperial State Crown with rubies, emeralds, sapphires, pearls, and more than 3000 diamonds...(compare also “Cullinan I.," page 94, No. 3). The large red stone above “Cullinan II." is the so-called “Black...Preferred Gemnological Name Adelaide ruby African emerald Alaska diamond American jade American ruby Arizona |  | | Journal (issue) | | straightforward names of gemstones such as ruby, sapphire, emerald, garnet, zircon, spinel, tourmaline, topaz, peridot...were some fine green beryls which looked like emerald of good medium quality. They were green when viewed...beryl readings, and remembering that Transvaal emeralds look drab through the filter and have refractive...LIDDIGOAT (R. T.). Developments in the synthetic emerald field. Gems and Gemology, 1964, X I , 5, pp. 131-138...general discussion on the new French synthetic emerald. This agrees in substance with the descriptions |
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