Rock And Mineral Identification Guide Pdf

How to identify rocks and minerals by jan c.

Rock and mineral identification guide pdf.

Muscovite is a member of the mica mineral group. Olivine is a group of minerals that come from magma. Is the rock made of crystal grains. Does it have a lot of flat shiny faces may be tiny or small that reflect light like little mirrors.

Specimens for personal or classroom use. Freeport mcmoran copper gold foundation. It is more important as a rock forming mineral than as a collectible specimen. This is measured with the mohs scale and refers to the minerals contained within a rock.

Fine grains are smaller and usually cannot be identified without using a magnifier. You may need to use a magnifier. The rock key use this key to ask and answer questions on your unknown rock specimens. Rasmussen revised from a booklet by susan celestian 2012 donations for reproduction from.

The key can help guide you to the correct rock identification. In simple terms hard rock scratches glass and steel usually signifying the minerals. Then determine the texture of the rock and based on the two identify t he rock name. It is important as a rock forming mineral.

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. Coarse grains are visible to the naked eye and the minerals can usually be identified without using a magnifier. The mica group is the name given to a group of silicate minerals that have silicon and oxygen as their two major components.

First determine composition which is based on mineral content or color if you can t see minerals.