LIMESTONES are a sedimentary rock composed almost entirely of what mineral?

Answer 1

calcium?

Answer 2

If a Limestone is composed entirely of(( obvious (and often large) shell fragments, it is called a Coquina.))
A Limestone are composed of the tiny exoskeletons of algaes is called Chalk and can be distinguished from a Micrite because the Chalk will feel somewhat gritty.
Some Limestones are made up of small (sand sized) spheres of Calcite.
These spheres are called ooliths & the rock is called an Oolitic Limestone.

These microscopic Calcite particles make up most of Limestone

Limestone can be identified in the same way that Calcite is identified, by an obvious reaction to dilute hydrochloric acid.

If a Limestone has no other distinguishing feature other, it is called either Limestone, or a Micrite.
Some Limestones contain obvious fossils, these are called Fossiliferous Limestone.

If a rock is dominated by the mineral Dolomite, it is called a Dolostone. Essentially all Dolostones started out as Limestone.


***** the answer is ---* limestone is a sedimentary rock composed almost entirely of the mineral calcite)

**calcite -copper ,penny

Answer 3

Monominerallic rocks made of only one mineral and are rare. Most rocks are polymineralic, made of two or more minerals combined physically (not chemically). Examples of monominerallic rocks include halite (“rock salt”) , dunite (terrestrial and meteoritic), anorthosite (terrestrial and lunar), and hexahedrite (a variety of the iron meteorites). aubrite - an achondritic pyroxenite, a more or less monominerallic rock composed almost entirely of a an iron-free pyroxene called enstatite. Named after the first recorded aubrite fall, Aubres which fell in Aubres, France on 14 September 1836. pyroxenite - a monominerallic or nearly monominerallic pyroxene-rich rock. Meteoritic pyroxenites include aubrites (enstatite-rich achondrites), diogenites (probably from Vesta), and ALH84001 (the martian meteorite which may contain fossilized relics of ancient martian microbes).

Answer 4

Calcite, Limestone is the remnants of coral reefs. If you find limestone there must have been a coral reef there at one time.

Answer 5

Good grief

http://encarta.msn.com/encyclopedia_761565838/Limestone_(mineral).html

GOOGLE
Key words limestone composition

Answer 6

calcium carbonate

Answer 7

carbon