Monday, March 30, 2009

Olivine Info!!!

By: Marissa, Lanya, and Ashley!!!

Chemical Formula: (Mg,Fe)2SiO4

Composition: Magnesium, Iron, Silicon, Oxygen

Color: Yellowish Green,Olive,Yellow Brown

Streak: White

Hardness: Mohs Scale-6 ½- 7

Crystal Form: Three unequal axes intersecting at right angles

Luster: Resembling glass, as in transparency, brittleness, and hardness

Cleavage: Good and Distinct

Fracture: Irregular and very brittle

Everyday uses: reflective sand, bricks, gem-stones for jewelry

Interesting Facts: The Hawaiian Islands are rich in Olivine, Olivine's gemstone variety, known as peridot is one of the most mispronounced of gemstone names, olivine is one of the types of minerals that makes up igneous rocks.