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Native elements 1419
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aperture Asia associated beak bedding biotite brachial valve brown brownish calcite Cleavage Cleavage Basal Cleavage Prismatic Colour and transparency Colourless 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 Colour dolomite elongate feldspar fibrous Field relations flattened fossils Fracture Conchoidal Fracture Uneven gabbro garnet gneisses grade grains granite granular green grey grooves Habit Crystals usually Hardness Hinge line hornblende hydrothermal veins igneous rocks layers limestone Lustre Metallic Lustre Vitreous Medium-sized metamorphic rocks mica Mineralogy Monoclinic occurs olivine opaque Ornament Orthorhombic oxidized pedicle valve pegmatites perfect cleavage phenocrysts plagioclase pyrite pyroxene quartz radiating reddish rhombohedral ridges schists sedimentary rocks sediments shell shown silicates sometimes specific gravity specimen sphalerite spines Streak White structure Subconchoidal surface suture syenite tabular teeth Texture transparent to translucent tubercles Twinning Common whorl Worldwide yellow