Cambridge Guide to Minerals, Rocks and FossilsCambridge University Press, 13 nov. 1999 - 336 pages An authoritative and practical identification guide to minerals, rocks and fossils of the world. This new edition of a classic reference work has been completely revised, updated and redesigned, with new extended introductory sections and appendices. An invaluable handbook for amateur collectors and specialists alike, this book is small and compact enough to carry in the pocket or backpack. • Over 600 specimens in full colour • Every specimen described and illustrated on the same double-page spread • Over 300 line drawings identifying structures and features |
Expressions et termes fréquents
Andalusite aperture Asia associated beak bedding biotite brown brownish calcite Cleavage Cleavage Basal Cleavage Prismatic Color and transparency Color index Colorless commonly convex corallites Cretaceous cross-section crystal form Crystal system Crystal system Cubic Crystal system Monoclinic Crystal system Orthorhombic Crystal system Trigonal deposits Distinguishing features Color dorsal valve feldspar fibrous Field relations flattened fossils Fracture Conchoidal Fracture Uneven garnet gneisses grains granite granular gray green Habit Crystals usually Hardness 2-3 Cleavage hornblende hydrothermal veins igneous rocks inches lava layers limestone Luster Luster Metallic Luster Vitreous margin metamorphic rocks meteorites mica Mineralogy Monoclinic nepheline occurs olivine opaque Ornament Orthorhombic oxidized pegmatites perfect cleavage Pinacoidal plagioclase plates pyrite pyroxene quartz radiating reddish rhombohedral ribs ridges schists secondary mineral sedimentary rocks sediments Septa shell shown sometimes specimen spines Streak White structure Subconchoidal surface syenite tabular teeth Texture transparent to translucent tubercles Twinning Common umbilicus ventral valve whorl yellow