| | Book (edition) | graphs gems gemstone's physical chemistry, occurrence, properties, and market potential. And spectacular...MATERIALS 16 16 239 / 18 / 19 / Luminescence Occurrence / Stone Sizes 233 15 / Comments / Journals...staples. Even such barely commercial stones as andalusite, iolite, sphene, chrysoberyl, and some of the...garnets, and turquoise. However, what do we do with andalusite, diopside, and sphene? A material, to be considered...and Namibia, respectively. However, although Madagascar is now officially the Malagasy Republic, I have | | | Report (volume) | .............................. Character and occurrence.................................. Metamorphism................................. Character and occurrence. .^ ........................... Smithfield limestone............................................... Occurrence.............................................................. 39 Taconic Range and Housatonic Valley.............................. 39 Stockbridge limestone.............. 40 Berkshire Hills and Connecticut Valley............................ 40 Hoosac schist.. | | | Book | such as quartz and feldspar, are widespread in occurrence. Others, such as platinum and diamond, are limited...is an important aid to understanding mineral occurrence. Examples of such groupings are copper, lead...Plate 49 (facing p. 307) illustrates examples of chiastolite crystals, which show in cross section a black... Ti02 Rutile Anatase (Octahedrite) Brookite Andalusite Sillimanite Kyanite Al2Si0 5 Hardness 10 1...color changes are particularly noticeable in gem andalusite, which is green in one direction and red-brown | | | Book (edition) | (Orthite), Zircon, 300 Datolite, Topaz 40 Axinite, Andalusite, Sillimanite, Kyanite, Staurolite, 301 Sphene...limestones and the red sandstones of the Connecticut Valley with their dinosaur tracks and ripple marks, or... 17 Plate 2 ELEMENTS 1. Gold in quartz (Grass Valley, California) 3. Copper (Keweenaw County, AND...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group...horizontal sandstone beds lying in the Connecticut Valley. Dinosaur footprints have been found in the rocky | | | Book (edition) | minerals have been added and the localities of occurrence have been updated and expanded. The special uranium...seldom present, with a resultant paucity of occurrence) tend to be in smaller crystals. Common minerals...limestones and the red sandstones of the Connecticut Valley with their dinosaur tracks and ripple marks, or...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group...horizontal sandstone beds lying in the Connecticut Valley. Dinosaur footprints have been found in the rocky | | | Book (edition) | the electrochemical series, of interest in the occurrence and metallurgical treatment of ores, and chemical...crystal-symmetry is inserted. The chapter on the occurrence of minerals has been partly rewritten to include...180 183 184 185 187 189 192 197 CHAPTER V. THE OCCURRENCE OF MINERALS The Classification of Rocks I. Igneous...chemical phenomena which are of importance in the occurrence and treatment of minerals. The more active metals...From the transparency of this mineral and the occurrence in it of included material, it was thought quartz | | | Book (edition) | the electrochemical series, of interest in the occurrence and metallurgical treatment of ores, and chemical...crystal-symmetry is inserted. The chapter on the occurrence of minerals has been partly rewritten to include...180 183 184 185 187 189 192 197 CHAPTER V. THE OCCURRENCE OF MINERALS The Classification of Rocks I. Igneous...chemical phenomena which are of importance in the occurrence and treatment of minerals. The more active metals...From the transparency of this mineral and the occurrence in it of included material, it was thought quartz | | | Book (edition) | However, in is like minerals chemistry and occurrence are called mineraloids and fall in the domain...hematite and black Tomb paintings in the Nile Valley executed 5000 years ago show busy artificers weighing...techniques; geochemistry 1947 nonopaque minerals occurrence and origin of minerals; Paul Niggli, Technische...geologists. But a knowledge of the chemistry, occurrence, and physical properties of minerals is basic...common the this in are the following: 222 andalusite enstatite anthophyllite (and other Symmetry | | | Book (edition) | Monticellite 167 Humite Group 168 Garnet Group 170 173 Andalusite Sillimanite 174 Kyanite 176 Staurolite 177 Chloritoid...plagioclase muscovite chlorite biotite garnet andalusite sillimanite kyanite staurolite cordierite K-feldspar...Extreme relief and birefringence and limited occurrence are characteristic. 119 120 INTRODUCTION...high temperatures to cure should be avoided. occuRRENCE: Found around fumaroles, volcanic vents, and...lack of magnetism, and cleavage distinguish it. occuRRENCE: A relatively common constituent in regional | | | Journal (volume) | 1 GE CONTENTS OF VOL . IX . Page. On the Occurrence of Nickeliferous Magnetic Pyrites at Tiernakill...Ethelstone H. Blake, Esq. [ Plate III.), On the occurrence of some characteristic Graptolites and other...GEOLOGICAL SOCIETY OF DUBLIN . I. -ON THE OCCURRENCE OF NICKELIFEROUS MAGNETIC PYRITES FROM TIERNAKILL...as Kyanite, and well known under the name of Andalusite . In thin splin ters, it has something of a flesh...systematic works as representing the density of Andalusite . This coincidence in physical characters is | | | Book (edition) | are The work has been repaged characters or occurrence of old species. introduced in illustration of...in the former ; 3, to make known the modes of occurrence and associations of species, and their geographical...Gravity. German. Hardness. Observations on occurrence, Oxidizing Flame (p. 204). Pyrognosties. Pyr...the planes in fours or eights. (2) The frequent occurrence of a square prism diagonal to a square prism...making with the other an angle of ISo"^. (3) The occurrence of bevelling planes on the trical A ]-esemblancc | | | Book | Neoproterozoic: corundum, sillimanite, kyanite, andalusite, staurolite, garnets, quartz, feldspars, pyroxenes...and baptize the child with cedar water." The occurrence of sambaquis was not limited to the coast alone...Cocolite, whose name means "stone grain" (for its occurrence in the form of greenish grains) at iron mines...Reproduction br ~1arcelo Lerner. As regards the occurrence of copper in the country, the rtferences of Jose...of the naturalist in describing the sites of occurrence of metals, as well as their matrix, was a practice |
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