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If you have a small sample bottle of dilute hydrochloric acid, the limestone will fizz as it is calcium carbonate and will dissolve in the acid, releasing carbon dioxide gas. The same acid will not react with the inert silica of a black chert. Sometimes chert and limestone are finely inter-bedded and the acid will pick out the limestone bands!
What else can I help you with?
What is organic limestone?
Rock that is made from cemented animal bones and shells is what organic limestone is.Specifically, the term "organic" indicates that the rock in question contains parts from a once-living animal. Hard parts such as bones and shells may cement together. The minerals - such as calcite - which make up these hard parts will form into limestone. In comparison, chert will form from the silica-based skeletons of microorganisms that die in such watery environments as lakes and oceans.
What is chemical limestone made of?
Chemical limestone can form when calcite is dissolved.
What is a grainy form of limestone called?
oolite
Is marble naturally occurring?
Yes. It is found in rocks, and has the chemical formula CaCO3 . It's a form of limestone.
What mineral forms stalactites and stalagmites?
A metamorphic form of limestone is marble.
What is the name of a very hard sedimentary rock that often forms in limestone?
Chert, a form of quartz, can form as beds or nodules in limestone or dolostone.
What sedimentary rock forms inside of limestone?
One possible answer is that chert can form inside of limestone. Chert is a microcrystalline sedimentary rock that forms from the accumulation of silica-rich remains of marine organisms, such as diatoms or radiolarians. Another possibility is travertine, which is a type of limestone that forms from the precipitation of calcium carbonate from water, typically in caves or hot springs.
Where is chert found?
Chert is commonly found in sedimentary rocks, often associated with limestone and shale formations. It can also be found in nodules or layers within other rock types, such as sandstone and dolomite. Chert deposits are widespread worldwide and can be found in locations like the United States, Europe, Australia, and Asia.
Is chert a sedimentary rock?
Chalk is a form of limestone, a sedimentary rock.
Depositional environment of chert?
Chert is commonly formed in deep marine environments through the accumulation of silica-rich microorganisms or chemical precipitation. It can also be deposited in shallow marine settings as nodules or beds within limestone formations. Chert may also form in freshwater environments, such as hot springs or silica-rich groundwater systems.
A cherty limestone would contain which major constituents?
A cherty limestone would mainly contain calcite (a form of calcium carbonate) along with chert, which is composed of microcrystalline quartz. Other possible constituents may include clay minerals, organic matter, and various impurities.
What is chert chemically primarily composed of?
Chert is a sedimentary rock composed of pure silica, occurring either in interlayered beds with other sedimentary rocks or as odd-shaped or rounded lumps called nodules found in other sedimentary rocks. The bedded form is often composed of the skeletal remains of tiny marine organisms, and these skeletons can be seen with the aid of a microscope. The nodular chert is formed from the precipitation of quartz from silica-rich ground water, and appears with frequency in limestone.
What is organic limestone?
Rock that is made from cemented animal bones and shells is what organic limestone is.Specifically, the term "organic" indicates that the rock in question contains parts from a once-living animal. Hard parts such as bones and shells may cement together. The minerals - such as calcite - which make up these hard parts will form into limestone. In comparison, chert will form from the silica-based skeletons of microorganisms that die in such watery environments as lakes and oceans.
What is fiint?
Flint is a variety of chert. Pure chert is made of the compound Silica Dioxide, and it is usually formed via precipitation from sea water, or accumulation of Siliceous materials at the bottom of an ocean as residues of organisms with siliceous structures (shells) drop to the ocean bottom. The crystals of silica dioxide in chert are too small to be visible to the naked eye, as opposed to the large crystals of silica dioxide that make up the mineral quartz. Flint is an impure form of chert, and is believed to form a bit differently than most other cherts. Geologists believe it forms as nodules in limestone that are created as siliceous materials fill voids in the surrounding limestone, through a process called diageneses. In diagenesis, the various compounds in sedementary layers separate and combine and reform with other similar materials as the layer is compressed and metamorphosed.
Some sedimetary rocks are called what?
A sedimentary rock is a type of rock made from pieces of other rocks, dissolved minerals, or plant and animal matter that collect to form rock layers.
What type of the sediment forms from minerals that crystallize from seawater?
Chemical sedimentary rocks, such as limestone and chert, can form when minerals crystallize from seawater. These rocks are typically composed of minerals that precipitate out of solution in bodies of water, including oceans.
In what type of sedimentary rock do you think might find fossils?
You are likely to find fossils in sedimentary rocks, such as limestone, shale, and sandstone. These rocks form from the accumulation and compression of sediment layers over time, which can help preserve the remains of organisms within them.
