石灰岩

Also known as Kalkstein

由碳酸鈣組成的沉積岩化學物質

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

via Wikipedia infobox

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)

via Wikidata · CC0

Article · 中文

石灰岩（灰石）（CaCO3），简称灰岩，又稱作石灰石，是以方解石为主要成分的碳酸鈣岩。石灰岩主要是在浅海的环境下形成的。石灰岩按成因可划分为粒屑石灰岩（流水搬运、堆積形成）；生物骨架石灰岩和化学、生物化学石灰岩。石灰岩是喀斯特地形的主要构成成分，是一種在海、湖水盆地中生成的灰色或灰白色沉积岩。石灰岩中常混入白云石、石膏、菱镁矿、黄铁矿、蛋白石、玉髓、石英、、萤石等。纯石灰岩中混入物一般少于5%。

Abstract from DBpedia / Wikipedia · CC BY-SA