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Lime (mineral)
*** Shopping-Tip: Lime (mineral)
'''Lime''' is a general term for various naturally occurring
minerals and materials derived from them in which
carbonates,
oxides and
hydroxides of
calcium predominate.
These materials are used in large quantities as building and engineering materials (including
limestone products,
concrete, and
mortar (masonry) mortar), and as
chemical feedstocks, among other uses. Lime industries and the use of many of the resulting products date from the
prehistoric periods in both the and the
New World.
The rocks and minerals from which these materials are derived, typically
limestone or
chalk, are composed primarily of
calcium carbonate. They may be cut, crushed or pulverized, and/or chemically altered. "Burning" (
calcination) converts them into the highly
caustic material ''quicklime'' (
calcium oxide, CaO), and, through subsequent addition of water, into the less
caustic (but still strongly
alkaline) ''slaked lime'' (
calcium hydroxide, Ca(OH)
2).
When the term is encountered in an agricultural context it probably refers to
Agricultural lime. Otherwise it most commonly means
slaked lime, as the more dangerous form is usually described more specifically as
quicklime or ''burnt lime''.
See also
*
Gypsum - a similar mineral.
*
sascab - a building and paving material (
Central America).
Category:Minerals
Category:Calcium minerals
Category:Oxide minerals
de:Kalk
et:Lubi
