Atlas of Rock-forming Minerals in Thin SectionLongman, 1980 - 98 oldal This full-colour handbook illustrates the appearance of common rock forming minerals as seen in thin section under the polarizing microscope. The book contains over 200 photomicrographs accompanied by short descriptions and summaries of the optical properties of the various minerals. The photographs are taken in either plane-polarized light or under crossed polars, and are carefully chosen to show the features by which the minerals can most easily be recognized. This book is designed to be used as a laboratory manual alonside the standard texts, by all students of earth sciences from sixth form to honours degree level. |
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Tartalomjegyzék
Vesuvanite Idocrase | 9 |
Andalusite Sillimanite intergrowth | 15 |
Eudialyte | 21 |
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Gyakori szavak és kifejezések
absorption colour aegirine-augite albite alkali feldspar amphibole analcite andalusite angle anomalous anthophyllite arfvedsonite biotite brown colour Ca₂ calcite cation centre characteristic chlorite chondrodite cleavage clinopyroxene colour seen colourless cordierite crossed polars lower crystals show dark dolomite edge Eudialyte extinction position F)2 Symmetry RI fairly field of view fine-grained groundmass garnet glaucophane green high relief hornblende inclusions intergrown kyanite large crystal leucite low birefringence magnification x 20 melilite microcline microperthitic Monoclinic mullite muscovite nepheline nosean olivine optic axis orientation orthopyroxene Orthorhombic pale Perthite phenocrysts photograph taken plagioclase plagioclase feldspar plane-polarized light pleochroism polarized light polars lower photograph pyroxene quartz refractive index RI B Birefringence right-angles rock sanidine schist Scotland second-order blue shows a number sillimanite simple twinning sphene taken in plane taken in plane-polarized taken under crossed terference thin section Triclinic Trigonal twin lamellae unknown locality upper and middle upper photograph shows visible yellow yoderite zoisite zoning