 | | Journal (article/letter/editorial) | | occurrence and have long been known, especially in Germany' Everywhere the nodules show a remarkable uniformity...Camargo, Mexico.. Ludlow, California. Dreiser Weiher, Eifel, Germany Kapfenstein, Austria. . Alaska.......Teslns 1 . Mineral Composition of Nodules from Dreiser Weiher. . . . . z - Mineral Composition of Nodules...represent materials from Kapfenstein, Austria; Dreiser Weiher, Germany; Peridot Cove,Arizona; and Salt Lake Crater...thus contribute to his valuable studies of the pyroxene group of minerals. Through the courtesy of Dr. Kuno |  | | Journal (article/letter/editorial) | | Rare-earth element (REE) concentrations of garnet and pyroxene were determined by SIMS, and the REE patterns...for mantle pyroxenes. A protolith (or parental pyroxene)"threshold" of ~24% A1203 may exist, above which...kyanite-eclogite and grospydite (grossular(gros)pyroxene(py)-disthene(di) [kyanite] eclogite (Bobrievich...Tschermak component (CaTs) of pyroxene are varied. The solubility of CaTs in pyroxene decreases with increasing...the two) may result in garnet exsolution from pyroxene. The principal aim of this paper is an initial |  | Wilshire, H.G., Meyer, C.E., Nakata, J.K., Calk, L.C., Shervais, J.W., Nielson, J.E., Schwarzman, E.C. (1988) Mafic and ultramafic xenoliths from volcanic rocks of the Western United States. Professional Paper 1443. US Geological Survey doi:10.3133/pp1443 | Report (issue) | | Rare earth elements ------------------Cr-diopside group -----------------Composite Cr-diopside peridotite...Al-augite pyroxenite --------------------Al-augite group ------------------Mineral separates and megacrysts...isotopes of the Cr-diopside group --------Sr isotopes of the Al-augite group ---------Sr isotopes of the...bottle-green pyroxene groups -----------------Sr and Nd isotopes of the Cr-diopside group ----Sr and Nd...and Nd isotopes of the garnetiferous ultramafic group- ----------------------- 1 2 2 2 4 8 8 12 12 13 |  | Wilshire, H.G., Meyer, C.E., Nakata, J.K., Calk, L.C., Shervais, J.W., Nielson, J.E., Schwarzman, E.C. (1985) Mafic and ultramafic xenoliths from volcanic rocks of the western United States. Open-File Report Vol. 1985 (85-139) US Geological Survey doi:10.3133/ofr85139 | Report (issue) | | ............................... 12 Cr-diopside Group............................................... 12...peridotite-Al-augite pyroxenite........... 12 Al-augi te group...................................................isotopes, Cr-diopside group.................................. 14 Sr isotopes, Al-augite group..................feldspathic and bottle-green pyroxene groups....... 15 Sr, Nd isotopes, Cr-diopside group........................ 15 Sr, Nd isotopes, garnetiferous ultramafic group................. 16 Sr, Nd isotopes, megacrysts |  | | Book (edition) | | given to the " normal group" under the successive systems, that is, to the group which is most common...illustrated lengths of the axes. 34 Axinite Pyroxene The full understanding of the subject study of...is determined by the way in which the molecules group themselves together in a position of equilibrium...about each one of them (or at least about each unit group of them), and further the same in all parallel lines...normal to the faces of the tetrahedron. 160 This group is illustrated by artificial crystals of barium |  | | Book | | The Hamlyn Publishing Group Limited, a Division of the Octopus Publishing Group, Michelin House, 81 Fulham...specific gravity (with some exceptions), and mineral group. Hardness was established as the main identification...according to individual specializations. A separate group lists the most often used mineralogical periodicals...more complicated inorganic compounds. The last group is formed by organic compounds. H. Strunz (1970)...crystal, rutile, titanite and adularia. A special group is represented by meteorites formed by minerals |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Fritz: Bergakademie Freiberg, Freiberg, Saxony, Germany. Donald B. Hoover: U.S.G.S., Federal Center, Lakewood...Institut fur Mineralogie, Ruhr Universitat Bochum, Germany. Duane Mellor: Geology Library, Yale University...Berlin, Germany. Peter Susse: MINABS, Inst. of Mineralogy, Univ. of Gottingen, Gottingen, Germany. C. Sheldon...Pennsylvania. Hans J. Wilke: Eppertshausen/Hessen, Germany. Wendell E. Wilson: The Mineralogical Record, Tuscon...Species containing more than one anion or anion group may be assigned to a separate class or may be assigned | | | Book | | The Hamlyn Publishing Group Limited, a Division of the Octopus Publishing Group, Michelin House, 81 Fulham...specific gravity (with some exceptions), and mineral group. Hardness was established as the main identification...according to individual specializations. A separate group lists the most often used mineralogical periodicals...more compilicated inorganic compounds. The last group is formed by organic compounds. H. Strunz (1970)...crystal, rutile, titanite and adularia. A special group is represented by meteorites formed by minerals |  | | Book (volume) | | Other Feldspar Gemstones 10 Gems of the Silica Group including Amethyst, Agate and Opal 11 Turquoise...some reason, the stones are better placed in a group form- | ing a small subchapter. In the technical...use in jewellery. Sedimentary Rocks The second group of rocks, the sedimentary rocks, result from the...clearly when they are referred to later. TABLE Rocks Group System Quaternary Cainozoie (recent life) also...between the rivers Ken and Son, lie the northern group of workings. These have beén mined to a limited |  | | Book (volume) | | Preface to Second Edition Acknowledgements Amphibole Group: Introduction Mg-Fe—Mn-Li Amphiboles Anthophyllite—Gedrite...tetrahedral site Vili tr. wt% X,Y,Z% 2V Amphibole Group trace weight per cent, percentage on a weight basis...attempt has been made to collect, summarize and group these contributions under mineral headings, and...exceptions, the treatment of each mineral or mineral group is in five subsections. In the Structure section...European Journal of Mineralogy; Springer-Verlag (Germany) for diagrams from Contributors to Mineralogy & |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...) 6-21 %. VHN(synth.) (10.C. purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite |  | | Report (volume) | | sometimes one or more daughter crystals such as pyroxene or feldspar. More rarely,the inclusions consist...y large ( F i g . 2 - 3 a , c ) , but those in pyroxene or plagioclase may be small or rare, and the difference...not been explained. Where inclusions do occur,in pyroxene or p l a g i o c l a s e , however, they are commonly..., S h i r l e y et a l . , 1979). T h i s same group ( e . g . , Padovani et a l . , 1982) has shown...along with appropriate P-V-T-X Figure 2-32. Planar group of primary glass Inclusions of high-Si potash granite |
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