Type of Igneous Rock

Carbonatite:

Carbonatites are perhaps the most unusual of all lava types. Carbonatites are intrusive or extrusive igneous rocks defined by mineralogical composition consisting of greater than 50 percent carbonate minerals. There are only 330 known Carbonatite locations on Earth, most of which are shallow intrusive bodies of calcite-rich igneous rock in the form of volcanic necks, dikes, and cone sheets. It can be seen in places such as the Rhine valley and the East African rift system. 

Most carbonatite lava's have low eruption temperatures between 500 and 600 degrees. Although they often resemble flowing lobes of black mud, they are hot enough to display glowing, deep-red colors when seen at night. It has known to have erupted in the active Ol Doinyo Lengai volcano in Tanzania. 

Here is a video clip of othe Ol Doniyo Lengai volcano erupting with carbonatite lava.

LAB 3

6 Examples of Minerals and Rocks!

Mica

Mica is the group of sheet silicate. This group of minerals has perfect basal cleavage and capable of splitting into thin laminae. Muscovite, or potassium mica, is the commonest of all and whenever the word mica is used it is understood to mean Muscovite.

Limestone

Limestone is a sedimentary rock composed largely of the mineral calcite and aragonite, which are different crystal forms of calcium carbonate. Limestone makes up about 10% of the total volume of all sedimentary rocks. Limestone has numerous uses, including as building material, as aggregate to form the base of roads, as white pigment, or filler in products such as toothpaste or in paints.

Halite

Halite is commonly known as rock salt. This the mineral from sodium chloride. The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pink, red, orange, yellow or gray depending on the amount and type of impurities 

Pumice

Pumice is a textual term for a volcanic rock that is a solidified, frothy lava typically created when super-heated highly pressurized rock is violently ejected from a volcano. It can be formed when lava and water are mixed. 

Quarts

Quartz is the second most abundant mineral in Earth's continental crust. Its formula is SiO_{2 other wise known as silicon-oxygen tetrahedral. Throughout the world varieties of quartz have been since antiquity the most commonly used minerals in the making of jewelry and hard-stone carving.} 

Galena

Galena is a natural mineral form of lead(III) sulfide. It is the most important lead ore mineral. Galena deposits often contain a significant amount of silver. Galena deposits are found worldwide in various environments 

LAB 2: Five Maps

Here is an example of a choropleth/ isarithmic map because it uses color and region distinction to show information. This map shows the average precipitation in the state of Georgia.  

Here is an example of an isarithmic map. Isarthmic maps use distinctive colors or shading to corresponding units according to a key on the map.

 Dot-density maps, like the one above, use a predetermined shape, color, and scale. This map uses concentration to show data trends the distances of McDonald's' locations. The more data there is in an area, more corresponding dots there will be in that area.

This map is called a proportional symbol map. It uses a fixed shape of a fixed color, but the size changes in proportion to the amount of data. Thus, the more data there is in an area, the larger the shape in that area will be. Here, the larger the red circles are in a state the more murders occur in that state. 

This is a choropleth map. It uses different colors to help quickly visualize general data trends over larger areas. This map looks at the estimated household income in the of year 2008. The different colors used represented an average income base on the scale in the bottom right hand corner.