 | | Book | | cover photo: Agate, polished. Nowy Kościół, Lower Silesia, Poland. Sample 260x260xl30 mm. Photo R. Molenda...320x260xl IO mm. Agate, polished. ~owy Kościół, Lower Silesia, Poland. Photo 30x60 mm, sample 320x260xl IO mm...160xl50x30 mm. Sphalerite, polished. QIJ...7.1sz, Poland. Photo 30x70 mm, sample 160xl50x30 mm. , Sfale111...okaz 230xl50xl5 mm. Sphaleńte, polished. Olkusz, Poland. Photo 50xl40 mm, sample 230xl50xl5 mm. Fot. 6...the oldest and the best technical academies in Poland will celebrate its 90th jubilee in 2009. Mining |  | | Book | | developed only after the eighteenth century in Poland, and the allocation of the stones has changed many...group: amethyst, rock crystal, smoky quartz, and citrine, as well as precious tourmaline and also, in part...that each higher gemstone is able to scratch the lower ones. The ten hardness stages are represented by...from the collecting basin into the progressively lower settling bins, the heavy minerals settle at the...whose age of 130 million years reaches back to the Lower Cretaceous Period. Pegmatites are present deep underground |  | | Catalog/List | | radial groups on limonile ........... Utah Toelle County, Gold Hill, Gold Hill mine ~ransparent micro crystals...lapis AJOITE Copper aluminum silicate Arizona Pima County, Ajo, New Cornelia mine Sky blue micro xls and...cerium aluminum silicate California Los Angeles County, Pacoirna Canyon Large black tabular crystals in...basic sulfate of aluminum and potassium Utah .Piute County, Tushar Mountains, Marysvale ----i'>ink crystalline...crystal vugs ALTAITE Lead telluride Colorado Saguache County, Klondike mine Cleavage plates in quartz with pyrite |  | | Catalog/List | | specimen from the Apache mine, near Globe, Gila County, Arizona GLOBES AND ATLASES ...... . 79 Sharp...calcium hydroxy-silicate. California Riverside County, Crestmore. White prismatic crystalline on merwinitegehlenite... AJOITE Copper aluminum silicate. Arizona Pima County, Ajo, New Cornelia mine. Sky- blue micro xls and...and coatings on monzonite . Arizona Pima County, Ajo, New Cornelia mine. S.ky-bJue crystals and masses...aluminum silicate. CLEAVELANDITE California San Diego County, Himalaya mine. White crystalled aggregates; some |  | | Catalog/List | | Fairfield County, Branchville White xlline with cymatolite, good study ... New Mexico Taos County, near Dixon...cerium aluminum silicate California Los Angeles County, Pacoima Canyon Large black tabular crystals in...iron silicate ACTINOLITE California San Bernardino County, Wrightwood Green prismatic crystalline mass ....CROSSITE Sodium iron silicate California San Benito County, Gem mine Compact blue-gray mass with natrolite...sodium potassium alumino-silicate Arizona Final County, Christmas Dark green cleavages in andesite .. |  | | | | sediments of the country rock, originally formed at the lower temperature of the earth’s surface, are metamorphosed...compounds of heavy metals in ore lodes at somewhat lower temperatures. They are usually accompanied by non-metalliferous...4.8. Streak greenish grey. Crystallised out at lower temperatures near the earth’s surface. 7 Chalcopyrite...Si0,. Hexagonal (above 575°C) and trigonal (at lower temperatures). Of all the minerals which occur naturally...brownish black, opaque morion (5), the yellowish citrine, the violet amethyst (7), the red iron quartz |  | | Book | | sediments of the country rock, originally formed at the lower temperature of the earth's surface, are metamorphosed...compounds of heavy metals in ore lodes at somewhat lower temperatures. They are usually accompanied by non-metalliferous...4.8. Streak greenish grey. Crystallised out at lower temperatures near the earth's surface. 7 Chalcopyrite...Si02 . Hexagonal (above 575°c) and trigonal (at lower temperatures). Of all the minerals which occur naturally...brownish black, opaque morion (5), the yellowish citrine, the violet amethyst (7). the red iron quartz (8) |  | | Book | | 11ne 2; ••• Amph1bo1ite--see Bolton, Worcester County M1nera1 Loca11t1es. page 85 ••• 11.8 3~ter cerium...•••••••••••••••••'.' •.••.•••• 2--6 Barn.table County ro •• il Localiti ••••••••••••••••••••••••••••...Localit1e•••••••••••••••••••••••••••• 21 Br1.tol County Mineral Localit1 ••••••••••••••••••••••••••••••...24--25 Dukes County Mineral Loeal1tiea •••••••••••••••••••••••••••••• 26--21 Duk •• County Fo.sil Loeal1tie...Local1t1es •••••••••••••••••••••••••••••• 29--3? Bs.ex County Fo ••1l Localit1e •••••••••••••••••••••••••••••••• |  | | Book | | Pape HARRIS COUNTY PUBLIC LIBRARY , | 3 4028 04886 ’ ; “4 : BP ae - ms bs . -a i 7 : ; -...gemstones to the individual zodiac signs started in Poland after the twelfth century when they were designated...quartz from the pegmatite of Queen Mine, San Diego County, California (USA). Collection: William Larson,...group: amethyst, rock crystal, smoky quartz, and citrine, as well as the precious tourmaline and, to some...phanerocrystalline quartz: rock crystal, amethyst, and citrine are mostly the product of hydrothermal solutions |  | | Book (volume) | | Rock-crystal .... Smoky-quartz .... Amethyst ..... Citrine ..... Rose-quartz .... Prase .... Sapphire-quartz...upper portion consists of brilliant facets and the lower those of the step-cut, is also an effective form...stones, the finest of which found their way through Lower Burma into India, being in many cases sold in Calcutta...is said that the illegitimate trade in rubies in Lower Burma amounted to between two and three lacs of...here the streams are too rapid; it is only in the lower and wider parts that the streams are sufficiently |  | | Book | | hardness. Each mineral will scratch those in a lower division on the scale and can be scratched by those...Occurrence: Cheshire (UK), Lower Saxony, Stassfurt (E. Germany), Austria, Chile, Poland. Fig. 25 from Stassfurt...Yorkshire, Michigan (USA), Ontario, Vic (France) and Poland. Valuable fertilizer. 36 Minerals Calcium...valuable doublets are those in which the upper and lower parts consist of real gemstones. The most prominent...The green A. shown in Fig. 58 is from Brazil. 59 Citrine (Ferruginous Quartz) is lemon coloured to gold-yellow |  | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...the natural processes of colour change. Yellow citrine may be obtained from the violet amethyst by heating |  | | Book (edition) | | under great pressure and high temperatures in the lower regions of the earth's crust (metamorphic minerals)...quartz Calcite Chalcedony Chalybite Chrysoprase Citrine Carnelian Corundum Dioptase Dolomite Fossilized...foliated crystals or weathered surfaces can show a lower hardness. Some ge1ns show different hardness on...fissures along the cleavage planes which not only lower the stone's value, but also bring the danger that...7½ Staurolite 7-7½ Tourmaline 7-7½ Amethyst 7 Citrine 7 Du mortierite 7 Prasiolite 7 Rock Crystal 7 Smoky |  | | Book (volume) | | Treatment, 174 Occurrence, 176 Historical, 178 Citrine, 181 Smoky Quartz, 182 Composition and Properties...The melting point is not known precisely, but is lower than that of tridymite (about 1670°) or of cristobalite...(displacive) inversions, at about 163° to so-called lower high-tridymite or middle-tridymite, and at about...INTRODUCTION lower temperatures. This behavior, together with the relatively high solubility and lower melting...unit cell dimensions of pure quartz, which are lower than those stated, are not known. Table 5 includes |  | | Book (edition) | | Cat’s-Eye Carnelian 172 _ 174 Peridot Quartz Citrine 136 Development of the ae 130 Kunzite 130 132... Artificially blue-tinted jasper (chalcedony) Citrine (quartz) Aventurine (quartz) Yellow sapphire Serpentine...Serpentine Kunzite (spodumene) Hiddenite (spodumene) Citrine (quartz) Rock crystal (quartz) Colorless fired...synthetic sapphire Citrine (quartz) Greenish-yellow topaz Colorless topaz Citrine (quartz) Blue zircon...tourmaline Glass imitation Colorless topaz Smoky quartz Citrine (quartz) Glass imitation Green hydrogrossular garnet |  | | Book (edition) | | Sapphire 86 Amethyst Amethyst Quartz Beryl 90 Citrine 120 Emerald 90 Aquamarine 94 Beryl 96 Chrysoberyl...Artificially blue-tinted jasper California ruby Citrine or yellowish fired amethyst Aventurine Hessonite...corundum Serpentine Dioptaz Kunzite Hiddenite Citrine or yellowish fired amethyst Korean jade Copper... Palmyra topaz Pink sapphire Yellow sapphire Citrine or yellowish fired amethyst Smoky Smoky Oriental...Greenish-yellow topaz Colorless topaz Citrine or yellowish fired amethyst Citrine or yellowish fired amethyst Blue | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...the natural processes of colour change. Yellow citrine or gold brown topaz may be obtained from the violet...should preferably be more detailed, e.g. walls of a quarry, or refuse heap specimen, so that one could find |  | | Catalog/List | | PHOTOGRAPH: _ VANADINITE Apache mine, near Globe, Gila County, Arizona. Sharp hexagonal barrel-shaped crystal...calcium hydroxy-silicate. Ca lifornia Riverside County, Crestmore. White prismatic crystalline on merwinite...QUARTZ AJOITE Copper aluminum silicate. Arizona Pima County, Ajo, New Cornelia mine. Sky-blue micro xls and...and coatings on monzonite .. Arizona Pima County, Ajo, New Cornelia mine. Sky-blue crystals and masses...aluminum silicate. CLEAVELANDITE California San Diego County, Himalaya mine. White crystalled aggregates; some |  | | Book | | from particularly comparatively Opal different lower, as In the are the of Silica with the aid...globular quartz. No. False topaz Cairngorm or Citrine. stone, Mormorion of 37. No. 6. No. 7. acicular... impurities. as Herkimer Haven, a county mean of lower—2'6o when Jasper, The are higher extremes...cracked, Similar ins. Rabenstein, Bodenmais CITRINE. No. one ROSE-RED 65. side Cut and SMOKY... 67. Quartz False , False Citrine, Topaz , Topaz, or Citrine. Yellow or iridescence and conchoidal |  | | Book | | one that has been well opened, such as a mine, a quarry, road or railroad cut, or a cliff. Fresh exposures...the upper part (the crown); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut diamond a brilliant-cut...cut; (c) too shallow facets, and 1 culet on the lower part (the pavilion). The propor¬ tions and number...but more expensive, diamond saw. Pavilion. The lower part of a faceted gem, below the girdle. 26 On... Two models of tumblers—the upper rotates, the lower vibrates. Polished gem stones of irregular shapes | | | Book | | one that has been well opened, such as a mine, a quarry, road or railroad cut, or a cliff. Fresh exposures...facets 1 on (the crown); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut Shaping a brilliant-cut...properly cut; (c) too shallow and 1 culet on the lower part (the and number of facets vary according facets...diamond saw. sizes, Pavilion. 26 The faster, lower part of a faceted gem, below the girdle. On a...gem stones of tumblers-the upper rotates, the lower vibrates. Polished shapes and sizes, known as baroques |  | | Book | | secondary deposits were discovered in the area of the lower Tunguska, Siberia, in 1948, and in 1954 the first...time); in Reichenhall, Berchtesgaden, Salzkammergut (Lower Triassic); Friedrichshall, Heilbronn, Schwăbish...should be called citrine, just as the naturalIy occurring yellow quartz is citrine. Citrine is naturally...and it means lemon-colored. The yellow color of citrine is due to the presence of trivalent iron, and it...golden yellow. Unlike burned amethyst, natural citrine does not show a red-brown shade, or zonal coloring |  | | Book | | HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...are 100 maps geared to leading the "hunter to his quarry" and more than eighty photographs of minerals in...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...knapsack you can use a mountaineering bag or a mili- quarry or mine where a permit tary bag; make it it...can them spring or caves and rock beds on the lower hillsides decidedly uncomfortable AND COLLECTING | | | Book | | one that has been well opened, such as a mine, a quarry, road or railroad cut, or a cliff. Fresh exposures...upper part (the crorvn); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut diamond Shaping a brilliant-cut...but 1nore expensive, diamond saw. Pavilion. The lower part of a faceted gem, below the girdle. 26 On... Two models of tumblers-the upper rotates, the lower vibrates. Polished gem stones of irregular shapes...ELEMENTS Arborescent silver on calcite. From Keweenaw County, Michigan, comes this superb example of metal " |  | | Journal (issue) | | gemmological investigation of synthetic zincite from Poland. The material is reported to have formed as an...examination, including material reported to be from Poland [Crowningshield, 1985].) Although the majority...industrial kiln in Silesia, Poland. Photo by Maha DeMaggio © GIA Silesia, Poland, used to produce zincbased...Discussions with representatives of the Krakow Poland-based firm Minerals and Gemstones shed some light...gneisses (granulite facies) of Tertiary age, and lower grade metamorphic rocks (amphibolite © Gemmological |
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