In sedimentology and geology, a nodule is a small, irregularly rounded knot, mass, or lump of a mineral or mineral aggregate that typically has a ...

Nodule (geology), a small rock or mineral cluster; Manganese nodule, a metallic concretion found on the seafloor; Nodule (medicine), a small aggregation of ...

Origins · Composition · Occurrence · Types of concretion

Polymetallic nodules, also called manganese nodules, are mineral concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides ...

Jun 5, 2022 · Nodule (geology) in France‎ (2 C). Nodules (geology) in the United States‎ (5 C). A. Agate nodules‎ (7 F). B. Black phosphorite nodule ( ...

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Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, ...

Nodule (geology) A nodule in petrology or mineralogy is a secondary structure, generally spherical or irregularly rounded in shape. Nodules are typically ...

A nodule was a small rounded mass of matter, typically a mineral, distinct from its surrounding formation. In 2267, millions of silicon nodules were found ...