| | Journal (article/letter/editorial) | UniversitĂ€t Bern, Baltzerstrasse 1-3, CH-3012 Bern, Switzerland Laboratorium fĂŒr chemische und mineralogische...UniversitĂ€t Bern, Freiestrasse 3, CH-3012 Bern, Switzerland ABSTRACT Single-crystal X-ray study of different...calcite Medium grade (~300â500 °C) grossular (âhessoniteâ) diopside Mg-chlorite prehnite epidote calcite...point detector is superior to measurement with an area-detector although the precision may be similar (Herbstein...reflected by the samples (4, 6, 7, 8, 14) from Zermatt-Saas and Fleschalp (Table 3). Part of these hydrothermal | | | Book | chrysoberyl has an unusual bluish cast around the area of the âeyeâ, and blemishes on its surface. Pavilion...| Streak White | Locations Sweden, Austria, Switzerland, Canada, USA, Afghanistan Lazulite in quartz...colour if a lover was unfaithful. Hessonite In Vedic astrology, hessonite is said to promote longevity and... Naturally coloured banding Rose quartz Dyed area Rock crystal Agate Crystallized agate Dyed agate...pollucite is one of two minerals named after Castor and Pollux, the Gemini twins in Greek mythology (see box, | | | Book | the private Bally foundation at Schonenwerd, Switzerland; and the Folch Museum at Barcelona, Spain. Because...Germanspeaking countries (Germany, Austria, Switzerland). The reasons for this are partly because they...catalogued, at an Ecole Cen- Part of the exhibition area 14 trale, during the subsequent French regime....collections of timber specimens. The mineral display area is small (ca.30m 2), and adjoins a geoscience exhibit...rose", 10cm across, from Fibbia, St Gotthard, Switzerland. lnstitut fur Mineralogie und Lagerstattenlehre | | | Book | pressure either locally or extending over a large area, it is said to be metamorphosed. There will be alteration...The wood of the âpencilâ is replaced by metal. The area to be tested should be the pure mineral, not a coating...museum, if the serious collector knows that the area in which he has been operating is mineralogically...rock crystal. Finest examples come from central Switzerland, especially from the Binntal, Tavetsch and St...Monteponi and Montevecchio, and at Tavetsch (Switzerland), Derbyshire (England). The Coeur d'Alene district | | | Book | chrysoberyl has an unusual bluish cast around the area of the âeye,â and blemishes on its surface. Pavilion...| Streak White | Locations Sweden, Austria, Switzerland, Canada, US, Afghanistan Lazulite in quartz...color if a lover was unfaithful. Hessonite In Vedic astrology, hessonite is said to promote longevity and...gem. Naturally colored banding Rose quartz Dyed area Rock crystal Agate Crystallized agate Dyed agate...pollucite is one of two minerals named after Castor and Pollux, the Gemini twins in Greek mythology (see box, | | | Book | for the gemstones have been placed in the general area where the gemstones are found. that there are no...Kaliningrad Oblastâpartofthe Russian ; federation. The area isinformally called Yantarny Kray, or âthe Amber...be sawn to remove poor areas, Separate a gemmy area from within a larger stone, or create a preliminary...discovered in Colorado, USA, in the 1850s, in the area of Cripple Creek, on the western side of Pikeâs...Pikeâs Peak. Other discoveries soon followed in the area of Clear Creek, Colorado, and the city of Denver developed | | | Book (volume) | Euclase Phenakite . Topaz . Zircon . Garnet Group . Hessonite Spessartite Almandine Pyrope (Bohemian garnet.... â (â Cape ruby â), cut Hessonite, crystals with . . 8. Hessonite, cut: Ceylon â 9. Demantoid...included, sixtysix square miles. The ruby-bearing area is, in all probability, much greater than this,...district have been washed down from the ruby-bearing area by the Mogok stream when in flood. At the time...mines of this region are scattered over a wide area, and are divided into two groups thirty miles apart | | | Book (edition) | Bluegreen topaz Red or pink topaz Blue tourmaline Hessonite (grossular garnet) Almandite (garnet) Green prehnite...Fluorite Gahnite Gahnospinel Galaxite GGG Gold Hessonite Katoite Langbeinite Lapis Lazuli Lazurite Leucogranite...Hedenbergite Heliodor Helvite Hemimorphite Herderite Hessonite Hiddenite Hodgkinsonite Humite Hureaulite Hurlbutite...Periclase Scorodite Staurolite Grossular Chambersite Hessonite Epidote 1.77-1.82 1.762-1.778 1.762-1.778 1.757-1...and colorless or very lightly tinted specimens. area. Spectrum of the Fraunhofer lines. Dispersion refers | | | Book (edition) | Citrine or yellowish fired amethyst Aventurine Hessonite Candy Almandine Indian jade spinel Cap-chrysolithe...Desclsizite Nephrite Neptunite Orthcclase Hauynite Hessonite Taaffeite Thaumasite Diaspor Dumortierite ...Brasilianite 5/2 Grossular 61/2-71/2 Enstatite Hessonite Pyrope Spessartine Uvarovite 6/2-7/2 Linobate...Rutile Spessartine Sulphur Almandine Amazonite Hessonite Hiddenite Howlite Spinel Sphalerite Spodumene...636 1.629- -1.674 1.628--1.649 0.015-0.037 Hessonite Epidote Azurite Pyrope Hodgkinsonite Pyrargyrite | | | Book | are dependent upon the geological structure of the area, ie on conditions favourable for the occurrence...local authorities for permis- sion to enter an area and to collect minerals. What the individual collects...with a short description or a small sketch of the area should be put down in the notebook to facilitate...with a provisional label bearing the name of the area, the name of the mineral, a short description of...Andreasberg - Harz (FRG), Imfeld and Binnental (Switzerland ) âą Application: As ore (extraction of As), in | | | Book (edition) | only about distance from a better known town in the area but also about the administrative regional units...common terms are not abbreviated, e.g. canton (Switzerland), vilayet (Turkey), region (Chile), kray and...SwitzerlandItaly, overlooking Binntal, Valais canton, Switzerland, also crystals in Obersulzbachtal Valley...Kaltenberg mine, Turtmanntal Valley, Valais canton, Switzerland. In individual crystals to 1 mat Djida...on Rhone Glacier, near Gletsch, and in crystals to 5 cm at Lamma, Emen, Fiesch, all Valais canton, as | | | Book | where and how are minerals found? sion to enter an area and to collect minerals. What the individual collects...with a short description or a small sketch of the area should be put down in the notebook to facilitate...with a provisional label bearing the name ofthe area, the name of the mineral, a short description of...are dependent upon the geological structure of the area, ie on conditions favourable for the occurrence...Andreasberg â Harz (FRG), Imfeld and Binnental (Switzerland) e Application: As ore (extraction of As), in | | | Book (edition) | Bluegreen topaz Red or pink topaz Blue tourmaline Hessonite (grossular garnet) Almandite (garnet) Green...Grossularite Hackmanite Hatynite Helvite Hercynite Hessonite Katoite Langbeinite Lapis Lazuli Lazurite Leucogranite...Ruby Sanidine Sapphire Sapphirine Herderite Hessonite Hiddenite Microline Microlite Milarite Mimetite...Grossular 1.734-1.759 Chambersite 1.732-1.744 Hessonite 1.730-1.757 Epidote 1.729-1.768 38 Double Refraction...lines. Dispersion refers either to the BG or the CF area. 686,7 656,3 41 Dispersion of Selected Gemstones | | | Journal (volume) | point where the energy of the river, stream , glacier or ocean carrying them can no longer support the...while others think it is caused by manganese. The area where the greatest concentration of amethysts is...deposits have also been found in northern Italy, Switzerland , Kenya and Za ire. Demantoids are mainly found...the case of a mineral you have found yourself, the area in which you found it may have taught you a lot...to its present location, in London's Bloomsbury area, in 1848. Boom time The mid- l 9ch century was | | | Book | chemist; produced research and publications in the area of inorganic and mineralogical chemistry; author...district, South Africa. garronite, Garron plateau area of Antrim, Ireland. huanghoite, Huang Ho River in...instead of the correct locality in Val Giuf, Switzerland. Some believe that Val Milar was deliberately...from the Roman name Sursass for Oberhalbstein, Switzerland. sursassite, from Variscia, an ancient name...named for the Yavapai tribe, which inhabited the area of Arizona around Jerome, the type localÂŹ ity. Although | | | Book (edition) | occasionally a fine catâs-eye. "California hyacinth.â Hessonite. âCalifornia iris.â Kunzite (spodumene), âCalifornia...Almandite from Ceylon. âCeylon hyacinth.â Hessonite garÂŹ net. Dark, almost black, especially greenish...cinnamon stone. The reddish brown variety of hessonite. circle agate. Agate with circular markings...71/1.73; Bi. 0.016. Disp. 0.011. From Brazil, Switzerland, India, Mass., Penn., N. C., Mont., and elsewhere... dictionary of gems and greenish. essonite. Same as hessonite. estealita (Span.) Soapstone. gemology exfoliation | | | Book | this case the locality is known precisely but the area is infested by bandits and little, if any, mining...as âvitreousâ or glassy. Some, like amber and hessonite garnet, are more appropriately credited with a...including the diamonds, were distributed over a wide area around. This kind of disÂŹ tribution is typical of...Metamorphic changes may be purely local, confined to an area where intrusive igneous rocks and the gases carried...stresses may have altered rocks over a very wide area, for example, when rocks are folded and mountains | | | Book (edition) | metamorphism in an area by examining the mineralogy of the rocks over a wide area. Metamorphic gional... 2 Brazil -4.6 0.0 -4.5 -20.4 -27.0 19.1 Switzerland 77 35 59 70 Illinois 17 20.3 -25.1 oval...9/9.2 1.6G 4.3/8.9 Germany 1.0 -40.0 -6.0 Switzerland 52 25 46 52 35 Italy 51 41.7 52.6 51.5 42...brasite 1 = 2.98; natromonte- 3.04-3.1. Baltic area), clear, massive, fancy, cloudy, frothy, fatty,... and California (Columbia Plateau Occurrence: area). rocks; as detrital grains, as an accessory mineral | | | Book (edition) | metamorphism in an area by examining the mineralogy of the rocks over a wide area. Metamorphic rocks...sea), pit amber (dug up, especially from the Baltic area), clear, massive, fancy, cloudy, frothy, fatty and...Washington, Oregon, and California (Columbia Plateau area). Houghton Co.,Mich. New Jersey: Watchung basalt...India: Deccan Plateau. Nova Scotia: Bay of Fundy area. Mt. Ste. Hilaire, Quebec. Also: Scotland, Ireland...e = 2.488-2.497. abundant. the Fracture Switzerland: gem material from the Alpine regions. Brazil: | | | Book | Tetrahedrite and realgar from the Binn Valley, Switzerland Pages 70-71: Fluorite crystals from the People's...evaporite deposits in sedimentary rocks throughout the area. As a result of the volcanic activity typically...summit of Pizzo Forno in the Ticino Canton of Switzerland. A particular type of metamorphism, known as...minerals from Baveno, Italy As long ago as 1500, the area of Baveno in the northern Italian region of Piedmont...extraction of pink granite for ornamental use. The area is also the site of spectacular caviÂŹ ties of orthoclase | | | Book | the science of gem testing and have covered that area very well. Details of the geological occurrence...country rock is recrystallized over a much larger area the process is known as regional metamorphism. This...crystals of apatite so often found in corundum and hessonite garnet are recognized by their well-formed appearance...cavity the healing process operates over the whole area at once. Any liquid remaining which does not fit...distribution of colour such as can be seen in hessonite, garnet, corundum and emerald also ranks as a | | | Book | this case the locality is known precisely but the area is infested by bandits and little, if any, mining...as 'vitreous' or glassy. Some, like amber and hessonite garnet, are more appropriately credited with a...including the diamonds, were distributed over a wide area around. This kind of distribution is typical of...Metamorphic changes may be purely local, confined to an area where intrusive igneous rocks and the gases carried...stresses may have altered rocks over a very wide area, for example, when rocks are folded and mountains | | | Book (volume) | : Garnet: Crystal and Cut Stones of Pyrope, Hessonite, Demantoid and Spessartite Garnets Almandine...are known as alluvials. Figure 7 shows a heap of area water-worn pebbles from the Ceylon gem gravels....rarer gemstones. The Mogok Stone Tract, as this area is called after the town of Mogok, is one of the...transparent golden-yellow feldspar. They form a typical area u THE ORIGIN AND RECOVERY OF GEMSTONES for...that the more historical stones were found. This area, usually referred to as Golconda, was one of the | | | Book (edition) | metamorphism in an area by examining the mineralogy of the rocks over a wide area. Metamorphic rocks...sea), pit amber (dug up, especially from the Baltic area), clear, massive, fancy, cloudy, frothy, fatty and...Washington, Oregon, and California (Columbia Plateau area). Houghton Co.,Mich. Nel1 1 Jersey: Watchung basalt...India: Deccan Plateau. Nova Scotia: Bay of Fundy area. Mt. Ste. Hilaire, Quebec. Also: Scotland, Ireland...England,· Wales; Norway; France; Italy; U.S.S.R. Switzerland: gem material from the Alpine regions. Brazil: | | | Book | (lolite), Al. hyd. sil. (var. Dichroite). or Hessonite, (Cinnamon Essonite, Stone), Al. &c. sil. B.M... & (syn ) Mn. proto- peroxide, &c. B.M. 21 Pollux, Cs. & Al. hyd. sil, 48. Polyadelphite (Garnet) |
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Pollux, Gorner glacier area, Zermatt, Visp, Valais, Switzerland