Mica(silicate)

Mica is a member of the group of minerals known as the sheet silicates. Believe it or not there are actually a few different types of Mica but the two primary types are split under the tricotahedral and diocathedral types. In essence this means that it determines how they are structured. As stated previously Mica comes in some variations but typically vary by region. Arguably though, the most prevalent feature of mica is it's highly defined cleavage.

Learn more about Mica




Malachite:

Malachite is a gemstone known for its green color,a trait for which it is rather popular and multiple bands that cover its surface. As a gemstone Malachite is often used as a bead stone or used in  necklaces as well. In addition Malachite is also known for its relative softness which makes it ideal for use in carvings well. Finally it should be noted that Malachite is often found within copper deposits which have made relatively cheap to purchase and use.

Malachite

Chloropleth map

A chloropleth map is  a map based around a central theme or factor which is meant show a statistic within a central boundary such as a state or province(even a country,) This particular map shows the average median income of households around the country. Furthermore notice how this map varies heavily by state and region to region.

Isarithmic map:

An isarithmic map shows a continually ongoing or constantly changing detail such as precipitation,  temperatures, or population density. The ultimate purpose of this map is to give the sum total of precipitation rather than just a comparison. For example this map is shows the level of rainfall throughout the year in Washington State.


Proportion symbol map:

A proportion symbol map is meant to show a particular set of data in the vicinity of a general location or specific area. The data displayed on this map can be anything from showing the industrial production of a region to the population of an area. In this case this map shows the population of the capital of each state.

Dot Density map:

The purpose of the dot density map is to state the pervasiveness of a factor within an area. For example this map indicates the population of the United States by area, with each dot representing a hundred thousand people.