On Pohnpei there are essentially two types of rocks. The black colored rock is basalt, a combination of minerals produced by the volcanic eruptions that formed the island. Basalt can be composed of different minerals. Basalt on Pohnpei contains iron which oxidizes to form red and brown colors. The red clay soils are also high in iron. There is so much iron in the ground that well water in some places has too much iron to be consumed by us. Out in Nett there is a special facility that removes iron from the well water.
The other type of rock is coral, usually a white color. Coral is not a mineral because the origin of coral is in a living animal, coral polyps.
Due to these limitations on an island this material is usually presented using videos such as the three part BBC series Men of Rock. Men of Rock is available on YouTube.
What are the three basic types of rocks?
What is rock hardness?
What is rock luster?
What is rock breakage?
What is rock color streak?
Can you identify your rock?
On Pohnpei there are essentially two types of rocks. The black colored rock is basalt, a combination of minerals produced by the volcanic eruptions that formed the island. Basalt can be composed of different minerals. Basalt on Pohnpei contains iron which oxidizes to form red and brown colors. The red clay soils are also high in iron. There is so much iron in the ground that well water in some places has too much iron to be consumed by us. Out in Nett there is a special facility that removes iron from the well water.
The other type of rock is coral, usually a white color. Coral is not a mineral because the origin of coral is in a living animal, coral polyps.
The goal of this laboratory is to become familiar with some other types of rocks and the minerals that make up the rocks. Pick out ten rocks and for each of those ten rocks engage in the following explorations.
Does the rock appear to be igneous, sedimentary, or metamorphic?
Hardness: Is the rock harder or softer than glass?
Luster: Is the rock metallic, non-metallic, or glassy luster?
Breakage: Does the rock exhibit fracture or cleavage breakage?
Streak: Does the rock have a colored or none/white streak on ceramic tile?
Identification: Try to identify the rock or mineral. Use image recognition apps such as Google Lens.
You decide how to organize this report. This report will be different. You should have an introduction, but there is no graph, no numerical analysis. Just the answer to the questions above for each of your ten rocks. You decide how to handle this, either as a table, a list, or some other logical arrangement.
However you choose to arrange your report, you must list each rock individually with its characteristics.