Biotite

Luster- non-metallic pearly luster http://geology.com/minerals/photos/biotite-15.jpg Color- black to brown to yellow Hardness scale- 2.5** Streak- white Cleavage- yes it breaks irregular in to thin strips Raidoactivity- yes FIVE FACTS Five Places its found Five places it is found 1. In the mineral group mica. 1. Botite is found in igneous and metamorphic rock. 2. It is minned using quarrying and underground mining. 2. It is found in sud bury, Ontario, Sicily and Russia. 3. It is a good heat insulator. 3. Its found in various conditions that phlogophte which is limited. 4. Sheets of biotite are flexible. 4. Found through central and northern Minnesota and Wisconsin. 5. It is used mainly as a desplay mineral. 5. Biotite is a necessary component to granite and metamorphic rock.**
 * BIOTITE
 * Magnetic- no