TONS ABOUT MINERALS

By: LC

where do geodes come from?

A common way a geode starts when a cavity forms in a rock. Cavities are more likely to be formed in a rock formed by cooling lava or magma which is igneous. A common way this happens is when a bubble of carbon dioxide and water vapor forms in flows of lava.

guess what ?!

* every time we eat vegetables we get the minerals we need to grow.

* quartz is a really common form of crystal that you can find in rocks very often.

birthstones! :)

Emerald for May

luster (how much it reflects light) = vitreous

hardness on moh's scale = 7.5 -- 8

streak =white

color = green then shades to colorless

pearl for june

hardness = 2.5-- 4.5

luster = reflects light

color = could be white, pink, silver, cream, brown, green, blue, black, and yellow

streak = white

amethyst for febuary

color = purple, violet

hardness = 7

luster = vitreous/glossy

streak = white

topez for november

color = blue, colorless, brown, orange, gray, yellow, green, pink, and reddish pink.

luster =vitreous

hardness = 8

streak = white