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Natrolite , natrolite Member of the zeolite group of minerals, with the formula Na2Al2Si3O10.2H2O; sp. gr. 2.2; hardness 5.0; white; massive, fibrous, or crystal… 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… Secondary Productivity , Skip to main content
secondary productivity Siderosis , siderosis Accumulation of the iron‐storage protein, haemosiderin, in liver, spleen, and bone marrow in cases of excessive red cell destruction and on… 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… Hematite , hematite
hematite (haematite, iron glance, kidney ore, red iron ore, specularite) Iron mineral, Fe2O3; one of the main ores for iron; sp. gr. 4.9–5.3…
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jarosite