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石灰岩

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Also known as Kalkstein

炭酸カルシウムを50%以上含む堆積岩

AI overview

Limestone is a sedimentary rock made mostly of calcium carbonate minerals that forms when calcium precipitates out of water, often through the accumulation of sea creatures like corals and shells. It's the main source of lime and frequently contains fossils that help scientists understand Earth's past.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Rock.name: Limestone
Rock.type: Sedimentary
Rock.image: ElTorcal0408.jpg
Rock.caption: Limestone outcrop in the Torcal de Antequera nature reserve of Málaga, Spain
Rock.composition: Calcium carbonate: inorganic crystalline calcite or organic calcareous material

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Wikidata facts

Instance of: material
Subclass of: carbonate rock
Material used: aragonite
Image: Raflinoer32-Museum Geologi-Batu gamping.jpg

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decomposition point: 2442
Commons gallery: Limestone
NIOSH Pocket Guide ID: 0369
vapor pressure: 0
Commons category: Limestone
solubility: 0.001
described by source: Pauly–Wissowa
time-weighted average exposure limit: 15
topic's main category: Category:Limestone
has characteristic: hygroscopy
OpenStreetMap tag: surface=limestone
Mohs' hardness: 3
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
exact match: purl.obolibrary.org/obo/ENVO_00002053

Sources (6)

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Article · 日本語

石灰岩（せっかいがん、英: limestone）は、炭酸カルシウム（CaCO3、方解石または霰石）を50%以上含む堆積岩。炭酸カルシウムの比率が高い場合は白色を呈するが、不純物により着色し、灰色や茶色、黒色の石灰岩もある。

Abstract from DBpedia / Wikipedia · CC BY-SA

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