Sedimentary Rock

Limestone is a naturally occurring sedimentary rock composed primarily of calcium carbonate. It forms over millions of years from the accumulation of marine shells and skeletons.

Sedimentary rocks have numerous fossils

A conglomerate.

marble

Sedimentary rock formation begins with igneous, metamorphic, or other sedimentary rocks. When these rocks are exposed at the earth's surface they begin the long slow but relentless process of becoming sedimentary rock.

This type of sedimentary rock must have organic material to be created. They are called organic because they are made from organic material such as grass or plankton that, over long periods of time, becomes a type of sedimentary rock. This organic material can be the organism itself or may be given off from the organism.

Many geologists believe that limestone deposits on land exist where ancient seas used to be. The moisture, over many centuries, created limestone.

Slate is the metamorphic rock that forms from shale after it is exposed to heat and pressure for a llllloooooonnnnnnnggggg time.

The processes of compaction and cementation of this sediment over a long period of time turn the sediment into rock.

Biogenic.

The sediment from which sedimentary rock is formed originally came from other rocks that weathered away. In some sedimentary rocks, especially breccia and conglomerate, some of those rock fragments can still be identified. If it does not appear to be part of the sediment, there are a few possible explanations depending on their relationship. If there is a layer of igneous rock between sedimentary layers then it could be from a volcanic eruption that occurred during the time of sedimentation, or a sill that intruded between layers after they formed. If the igneous rock appears to cut through the sedimentary rock then it most likely is an intrusion. If there is a piece of igneous rock that happens to be in an area where the local bedrock is sedimentary then it may have been transported there by glaciers.

Metamorphic rocks are primarily composed of minerals that have undergone transformation due to heat, pressure, and chemically active fluids. Common grains found in metamorphic rocks include quartz, feldspar, mica, and hornblende. The specific composition varies based on the parent rock and the conditions of metamorphism, leading to various types of metamorphic rocks such as schist, gneiss, and marble.

Yes.

calcium and magnesium both.contains in marble.

In order to purchase a Cerelle Sandstone Set you can go to your local Wal Mart or Target or anyplace that sells dining ware. Amazon and eBay also sells these sets.

Limestone is the compressed skeletal remains of minute sea-creatures.

because they enjoyed doing so

A lodestone is a magnetized piece of rock. They are made of made of magnetite, a type of iron ore. For a piece of magnetite to be magnetic, it must be exposed to a magnetic field.

Sedimentary rocks are classified based on their mineral composition, grain size, texture, and the way they were formed. The three main types of sedimentary rocks are clastic, chemical, and organic. Clastic rocks are made up of broken fragments of other rocks, chemical rocks form from precipitation of minerals from water, and organic rocks are formed from the accumulation of plant and animal remains.

You will want to use a medium base WHITE mud for laying your tile. The medium base will allow you to make adjustments to level the tile and you must use white to prevent the mud from staining the tile. Keep in mind this is a natural stone. As far as the grout goes, I recommend using 3/16 to 1/8 spacers and make sure you use a sandless grout. A grout that has sand in it will scratch your tile when you float it in. Again, this is a natural stone. Do not forget to seal your tile immediately after installation and continue to do so as needed. Also, make sure you regularly clean your tile. If you spill anything clean it up immediately and do not use anything acidic as it will stain or discolor your tile. Other than that, you will enjoy your travertine for many, many years. Good Luck.

It has a couple of industrial uses such as in smelting and can be used as a soil additive when crushed. The literature also makes mention of its use in finished stonework.

Lots of things harden when heated: clay, for instance. But do they melt when cooled? Does clay? Something that melts when cooled, would be a substance whose particles would slip away off each other with lesser average kinetic energy. Something like a soup of magnetic dipoles, or something of the sort. There are no pure substances that melt as you cool them. However, that assumes no simultaneous change in pressure -- if you decrease the pressure a lot as you cool, then you can melt something while cooling. Similarly, no pure substance will harden when you heat it at constant pressure. But again, if you increase the pressure while you heat it, you can solidify something while heating it. But it's important to understand it's the pressure that doing the solidifying or melting in this case, and you are just working against the change in temperature which is effectively doing the opposite. That said, mixtures can often harden when heated. Clay is a good example. Paint, glue, epoxy will also harden when heated. But in all cases that is because you are either removing water (or another solvent) or you are causing a chemical reaction to happen which causes it to harden. In a similar way, there may be mixtures that melt when cooled (due to a chemical reaction for instance), but I don't know of any.

Kaibab Limestone is not an organic sedimentary rock, but classified only as a sedimentary rock. Organic sedimentary rocks form from the remains of carbon rich plant life normally.