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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Collected papers by H.G. Midgley on the mineralogy of silicate building materials, with additional papers

Midgley, H. G. January 1967 (has links)
No description available.
2

Beiträge zur Kenntnis verschiedener Mineralien ...

Mann, Otto, January 1904 (has links)
Inaug.-Diss.--Leipzig. / Vita.
3

Bijdrage tot de kennis van eenige bodemsoorten van Java en Sumatra ...

Loos, Hendrik. January 1900 (has links)
Proefschrift (D. Agr.)--Landbouwhoogeschool te Wageningen. / "Literatuur": p. 211-216.
4

Übersicht der mineralien des bayerischen waldes und des Oberpfälzer Waldgebirges ...

Rosenkranz, Eduard, January 1907 (has links)
Inaug.-diss.--Erlangen. / Lebenslauf. "Literaturübersicht": p. [5]-8.
5

Crystallographic models of the pyroxenes

Thompson, Richard Maxwell January 2004 (has links)
Geometric models of the pyroxenes have been developed that allow the calculation of pyroxene crystal chemical properties as a function of pressure, temperature, and composition. The set of all closest-packed stacking sequence labels of length N using the standard A, B, and C notation is partitioned into equivalence classes using the generalized symmetry group, Q ≅ D(N) x S₃. Representatives of each equivalence class are used to derive crystal structure data sets for all of the possible ideal pyroxenes based on stacking sequences of length 12 or less. Stacking sequences of observed pyroxenes are identified, crystallographic settings of the pyroxenes and transformations between them are systematically derived, and the M2-T interatomic distance is identified as an important crystal chemical parameter. The constraint of closest-packing is removed and models of the commonly observed polytypes are derived that have regular M1 and T. These models are parameterized in terms of the O3-O3-O3 angle and the model oxygen radius. M2 is allowed to distort. Crystallographic parameters such as interatomic distances, unit cell volume, and packing distortion are determined as a function of the O3-O3-O3 angle. Results are compared with observed pyroxenes, providing insight into which interatomic interactions are important in determining pyroxene topology and behavior. Temperature is shown to favor polyhedral regularity in orthopyroxene and protopyroxene. Compression and expansion strain ellipsoids for observed and model pyroxenes are compared, demonstrating that a combination of tetrahedral rotation and isotropic compression approximately reproduces the compression ellipsoids of pyroxenes, but not the expansion ellipsoids. Ambient cell volumes of the C2/c pyroxenes are strongly correlated with M1 cation radius. Integrating the relationship between volume and M1 radius with the model provides a means to model volume changes with P, T, and x in the C2/ c pyroxenes.
6

MINERALOGICAL COMPOSITION AND TEXTURAL PROPERTIES OF RIVER SEDIMENTS FROM BRITISH HONDURAS

KRUEGER, WILLIAM CHARLES, JR. January 1963 (has links)
No description available.
7

CHEMICAL AND MINERALOGICAL VARIATIONS IN THE RADIAL DIKES OF THE DIFFICULTY CREEK INTRUSIVE CENTER, SAN JUAN MOUNTAINS, COLORADO

FOSS, TED HARRY January 1964 (has links)
No description available.
8

GEOCHEMICAL AND MINERALOGICAL STUDIES ON THE WEATHERING OF GRANITIC ROCKS

HARRISS, ROBERT CURTIS January 1965 (has links)
No description available.
9

CHEMICAL AND MINERALOGICAL VARIATIONS IN THE VIRGIN ISLANDS BATHOLITH ANDITS ASSOCIATED WALL ROCKS

LONGSHORE, JOHN DAVID January 1966 (has links)
No description available.
10

ELECTRON MICROPROBE STUDY OF THE METALLIC MINERALS IN ORDINARY CHONDRITES

TAYLOR, G. JEFFREY January 1970 (has links)
No description available.

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