The mica group is the name given to a group of silicate minerals that have silicon and oxygen as their two major components.
Rock and mineral identification guide pdf.
Trap rock is a name applied to any dark colored igneous rock used to produce crushed stone.
To identify name igneous rocks you determine two things about the rock.
It is more important as a rock forming mineral than as a collectible specimen.
Coarse grains are visible to the naked eye and the minerals can usually be identified without using a magnifier.
Difficult rocks elementary students find lots of rocks that you will not be able to identify.
The key can help guide you to the correct rock identification.
It is important as a rock forming mineral.
Olivine is a group of minerals that come from magma.
First determine composition which is based on mineral content or color if you can t see minerals.
Then determine the texture of the rock and based on the two identify t he rock name.
This is measured with the mohs scale and refers to the minerals contained within a rock.
You may need to use a magnifier.
How to identify rocks and minerals by jan c.
Does it have a lot of flat shiny faces may be tiny or small that reflect light like little mirrors.
Muscovite is a member of the mica mineral group.
Fine grains are smaller and usually cannot be identified without using a magnifier.
Rock mineral and fossil collections.
Freeport mcmoran copper gold foundation.
Is the rock made of crystal grains.
Rock and mineral kits.
In simple terms hard rock scratches glass and steel usually signifying the minerals.