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Friday, November 7, 2008

The whole rock, and nothing but the rock

We've already learned that there are 3 types of rocks - sedimentary, igneous, and metamorphic. This week you will be a geologist and will have to test and identify different types of rocks. Spend some time researching different rocks and use the information you find to reply to this post. You may also want to review the information on these websites:

Identifying Rocks and Minerals


Your reply must include the following information to receive full credit:

1. Your initials
2. The name of your rock (example: granite, limestone, etc)
3. What type of rock is it? (sedimentary, metamorphic, igneous)
4. What minerals are in your rock?
5. Describe your rock: hardness, color, shape, texture
Bonus: If you have an example of the rock you are writing about, use the tests we learned about to identify your rock and its characteristics. All of the testing materials are available on the science table.
Replies are due by Tuesday, November 25

9 comments:

Anonymous said...

My rock is graphite.
It is used as pencil lead.
It is an igneaus rock.
It's minerals are: marble,schist,and gniess.
It is pretty weak.
It's color is black.
Almost any shape before made into lead.
It is smooth.

NAF

Anonymous said...

1. MG
2. My rock is limestone. It is used to build churches and is easily carved.
3. Limestone is sedimentary. It is formed in the ocean and has fossils in it.
4. Limestone's minerals are calcite and calcium carbonate. Under heat and pressure it can turn into marble.
5. Limestone has a hardness of 3. It is grey and white. Its texture is sharp and bumpy but can be polished smooth.

Anonymous said...

1. MG
2. My rock is limestone. It is used to build churches and is easily carved.
3. Limestone is sedimentary. It is formed in the ocean and has fossils in it.
4. Limestone's minerals are calcite and calcium carbonate. Under heat and pressure it can turn into marble.
5. Limestone has a hardness of 3. It is grey and white. Its texture is sharp and bumpy but can be polished smooth.

Anonymous said...

My rock is sandstone. It belongs to the sedimentary family. It looks like sand paper and feels like sand paper. The coler is sandy coler. Well thats the rock I find.

KLC

Anonymous said...

My rock is Gneiss. The minerals it is made up of are usually feldspar, mica, and quartz. Gneiss is a metamorphic rock. It's hardness is 7. Gneiss's uses are mainly for building purposes.


ZWL

Anonymous said...

My rock is Ignouas.Igneouas rock was formed by fire and made by fire.Some other Igneouas rocks are Ganite,Pumice,Gabbro,Basalt,Obsidian.But there can be other Igneouas rocks in the wourld.Plus there are rocks all around us.MM

Anonymous said...

NAF
My rock is graphite and it is used for pencil lead.

Graphite is a metamorphic rock.

The minerals in graphite are calcite,quartz,mica,iron meteorites,and tourmalines.
Description of Graphite:
Black,any shape,smooth and bumpy.

bcs said...

My rock is granite.
Granite is an igneous rock.
The minerals are quartz, feldspar, mica, and hornblende.
My rock is hard and rough.
I identified my rock by doing the streak test. My result was the color was white.
People make gravestones and counters out of granite.

BCS

bcs said...

My rock is granite.
Granite is an igneous rock.
The minerals are quartz, feldspar, mica, and hornblende.
My rock is hard and rough.
I identified my rock by doing the streak test. My result was the color was white.
People make gravestones and counters out of granite.

BCS