wavellite
wavellite A secondary mineral, with the formula Al3(PO4)2(OH)3.5H2O; sp. gr. 2.3–2.4; hardness 3.5–4.0; orthorhombic; normally white, but often greenish, yellow, grey, or brown; vitreous lustre; normally forms fibrous, radiating aggregates, or hemispherical or globular aggregates; found on joint surfaces and cavities in rock, especially slates and shales, and in association with limonitic ore bodies. It is named after the 18th-century British mineralogist W. Wavell, who discovered it.
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Rutile , rutile
rutile An accessory mineral, TiO2; iron, niobium, and tantalum may also be present; sp. gr. 4.2–5.6; hardness 6.0–6.5; tetragonal; normally re… Anglesite , wulfenite Mineral, PbMoO4; sp. gr. 6.5–7.0; hardness 3; tetragonal; orange-yellow, olive-green, or brown; white streak; resinous lustre; crystals usu… Normal , nor·mal / ˈnôrməl/ • adj. 1. conforming to a standard; usual, typical, or expected: it's quite normal for puppies to bolt their food | normal working… Leucite , leucite An important feldspathoid mineral KA1Si2O6; sp.gr.2.5; hardness 5.5–6.0; tetragonal; normally white or grey; vitreous lustre; crystals form v… Joint (geology) , joint
1. A discrete brittle fracture in a rock along which there has been little or no movement parallel to the plane of fracture, but slight movemen… Normalization , Normalization
BIBLIOGRAPHY
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wavellite