Lab work Physical science

LAB 13 – ROCK IDENTIFICATION NAME:

For this lab you will be researching the 3 types of rocks: igneous, sedimentary, and metamorphic.

Using the website: https://geology.com/rocks/ pick the rocks you see in the data tables for each classification and identify the information requested below. Answer the questions related to the rocks as well.

PRE-LAB QUESTIONS:

1. What does the word “igneous” mean?

2. How are sedimentary rocks formed?

3. Where are most metamorphic rocks found?

DATA COLLECTION:

Three igneous rocks are given, you need to select 2 more from the choices listed on the website (make sure they are igneous). Fill in the information for each column.

Texture: Intrusive/Coarse Grained OR Extrusive/Fine Grained are the terms you should use.

Minerals Present: Look at the image and determine at least 2 minerals found in that type of rock.

Color Index/Composition: Look at image above, across the top row shows terms for color/composition. Felsic is light, Intermediate is medium, mafic is dark.

Common Locations: List at least one location where this rock is usually found on Earth.

IGNEOUS ROCKS (Remember, you fill in the last 2 blanks with 2 you choose.)

NAME OF ROCK	TEXTURE	MINERALS PRESENT	COLOR INDEX/ COMPOSITION	COMMON LOCATIONS
GRANITE
BASALT
OBSIDIAN

If an igneous rock has an intrusive (coarse grained texture) what does that tell you about the rock’s formation?

What does it mean for an igneous rock to have a “Vesicular” texture? Give an example of a rock that exhibits that texture. How did this texture occur?

Four sedimentary rocks have been picked for you; you will choose one more you want to detail. Fill in the following info for each.

Composition: Detrital, Chemical or Biochemical/Organic are your 3 choices.

Texture/Grain Size: Gravel, sand, silt, clay sized grains, can also detail shape like angular or rounded. Microcrystalline have smooth, shiny luster, no visible crystals or crystalline textures are those with visible crystals, also shiny.

Formation: How did the rock form, be brief on your description to fit into table easily.

Common Locations: Same as before, where is this rock usually located on Earth, 1 location is enough.

SEDIMENTARY ROCKS (Remember, you fill in the last blank with 1 you choose.)

NAME OF ROCK	COMPOSITION	TEXTURE/ GRAIN SIZE	FORMATION	COMMON LOCATIONS
SANDSTONE
CONGLOMERATE
LIMESTONE
COAL

What is the main difference in chemical and biochemical/organic sedimentary rocks? Give an example of each type.

Give at least 2 different ways that sedimentary rocks are unique and helpful.

Five metamorphic rocks have been listed on the table below, you need to fill in the information about each.

Texture: Foliated (banded appearance, not always visible) or Nonfoliated (no obvious stripes)

Common Uses: what is this rock used for in everyday life/industrial uses

Parent Rock: what rock did this one metamorphose from

Common Locations: Same as before, 1 location it is found on Earth.

METAMORPHIC ROCKS

NAME OF ROCK	TEXTURE	COMMON USES	PARENT ROCK	COMMON LOCATIONS
GNEISS
SCHIST
ANTHRACITE
MARBLE
SOAPSTONE

Why do some metamorphic rocks appear to be folded?

What rock type of the 3 would you typically find in Oklahoma? Explain why that is and give an example of one and where you could find it in the state.