Limestone composed of spherical ooids 0.25-2mm formed by concentric precipitation of calcite around a nucleus. Texture: Oolitic. Rock type: Sedimentary Chemical. Grain size: Sand-sized ooids. Minerals present: Calcite ooids, Aragonite, Calcite cement. Formation: Forms in warm, shallow, agitated marine waters where calcite precipitates concentrically around nuclei rolled by waves. Common geological settings: Bahamas, Persian Gulf, England Jurassic oolite ; found in shallow warm marine environments. Common look-alikes and related entries: Limestone, Pisolitic Limestone, Sandstone.
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Last updated
2026-03-30T14:39:01.263961+00:00
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Rocks — U.S. National Park Service. Authoritative overview of rock groups, the rock cycle, and geologic processes.
Limestone composed of spherical ooids 0.25-2mm formed by concentric precipitation of calcite around a nucleus.
How can you identify Oolitic Limestone?
Compare several properties rather than relying on colour alone. This entry records rock type: Sedimentary Chemical; texture: Oolitic; grain size: Sand-sized ooids; common minerals: Calcite ooids, Aragonite, Calcite cement. Confirm an important identification with additional field tests or qualified laboratory work.
How does Oolitic Limestone form?
Forms in warm, shallow, agitated marine waters where calcite precipitates concentrically around nuclei rolled by waves.
Where is Oolitic Limestone commonly found?
Bahamas, Persian Gulf, England Jurassic oolite ; found in shallow warm marine environments.
What is Oolitic Limestone commonly confused with?
Oolitic Limestone may be confused with Limestone, Pisolitic Limestone, Sandstone. Compare multiple diagnostic properties because colour and surface appearance can overlap.
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