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It feels smooth but is lumpy aswell. It is black and I think it is extrusive. It can be used for road base and construction projects.

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its very light
its rough
it has air pockets
intrusive rock because it has no crystals because it cooled down too quickly

uses:
scrub off dry skin (exfoliate)

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Dolerite is rough with little lumps. It has a khaki/dark grey colour. Quite dull looking.
-It would be an extrusive rock because is has extremely small crystals.

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It has a darker colour and has big interlocking crystals meaning it is a intrusive, and has a rough feel. It is used for gravestones, kitchen benches and ornamental facing stones.

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Very light and porous. White and holy. No crystals.

Pumice is extrusive.

Pumice is used for: lightweight concrete and cinder blocks.

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Extrusive, used in ornamental facing stones,paving and grave yard head stones rough texture

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intrusive rocks
it is used for countertops, buildings, bridges, pavings, tiles and monuments
it smooth on the top but it rough in the edges
its multicoloured, there is different types of greys and blacks.

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It is pretty lightweight, it is a mix of colours but is mostly gray. The underside is quite rough but the top is smooth. There are large interlocking crystals. It is mostly made of crystals.

It is intrusive.

It can be used for:
- indoor decode when polished(counter tops)
- building construction

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-Shiny
-Darin coloured
-Large crystals
-rough
-lumpy
-instrusive
Used In
A filter stone in drain filled, railroad ballast, Agrogate in asphalt pavement

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• Has a high density
• Has a dark colouration
• Dull appearance
• extremely small crystals
• Rough textures
• non interlocking crystals

Extrusive rock

Uses:

• Concrete
•Roads sub-base
• Flush seals
• building constructions

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This rock is rough in texture but not very lumpy. It does have lots of air bubbles, making it light and airy. The rock is a beige/cream type colour. It is extrusive, we cannot see any crystals.

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It is rough and a very dark grey/black colour. It is extrusive and can be used for graveyard heard stones or paving.

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its a smooth surface and has some parts that shine
it is an intrusive rock because it has small crystals and has interlocking minerals

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it is extrusive
it is rough and it has jagged edges
it is used for sculpture and roads
the colour is dark grey
its dense and heavy

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•extremely light
•no crystals
•lots of holes
•extremely low density
•light in colour

Extrusive rock

Can be used for:

• Taking off dry skin
• low density concrete blocks
• Used back in roman times

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-speckled, dark
-large crystals
-rough
-instrusive
Used in
Paving stones, headstones, kitchen countertops

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It is quite lightweight and dark coloured. It has a polished look and  has a smooth surface.

It is extrusive.

Used for:
- roads
- in asphalt

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Grey, lustrous, not many holes, extremely smooth.

Granite is intrusive.

Uses for granite: bench tops, floors, splash back and statues.

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Dark in colour, rough ,extrusive used in construction such as roads and concrete and flush seals.

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It has a dark colour meaning it has lots of minerals, and has a rough texture, it has lots of small crystals meaning it is and extrusive rock. Its used in statues, sub-bases for concrete and is one of the materials used in the creating of stone henge or on gravestones.

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-dark grey
-small crystals
-rough
-extrusive
-dull colour
Used In
Statues, flush seals, as a road sub- base

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it has a very smooth surface, it is a dark colour and its an extrusive igneus rock because the crystals are visible

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It is smooth and shiny on the top, and it is rough and rigid on the bottom. It is silver looking with many different shades of grey, even some black. This rock has very large crystals so it is intrusive.

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It is extrusive and very heavy. It has a rough texture and is a a dark orange-brown colour. It can be used for concrete as it is so strong and and building paving.

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Smooth, black/ grey

Basalt is extrusive.

Uses for basalt: roads, asphalt, rail road ballast and filter stone in drain fields.

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Is a black-gray colouring. It is rough and heavy (for its size). It has quite a few chunky crystals.

It is extrusive.

It can be used for:
- ornemental
- grave stones

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• Smooth surface
• grey colouration
• partially rough on edges
• reflective surface
• lustrous
• small crystals that interlock

Intrusive Rocks

Uses:

•benchtops
• floors
• splashbacks
• floors

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Light in colour, quite rough, extrusive, has no crystals used in concrete,emery boards which are nail files.

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it rough and lumpy
it is intrusive
Gabbro is used for paving and for kitchen countertops

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Its a smooth texture with many holes in it, it has a light colour meaning it has little minerals. It has No crystals making it an extrusive rock. Its also very light in weight. Pumice is used to make light weight concrete and was used in ancient roman times, it is also used to rub dead skin off peoples feet.

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This rock is mostly smooth with little ridges. It is dark in colour including grey and brown shades. It has tiny crystals therefore it is and extrusive rock.

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It's is very light and the texture is rough. It's is a darkish creamy colour. It is definitely extrusive and can be used to make lightweight concrete or insulative low-density cinder blocks.

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it is a dark grey colour
it is grainy and pretty rough
it is really heavy and has no air pockets
it is intrusive
it is used to build statues, and walls

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-white/beique colour
-no crystals
-rough texture
-air bubbles
-extrusive igneous
Used in
Cement, getting rid of dead skin, sail conditioning

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it is a dark and it has some rough surfaces and some smooth surfaces, its an extrusive igneus rock because the crystals are closely bonded together and large

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• Smooth and slightly rough surface
• Black colouration
•  extremely small crystals
• slightly deformed looking shape

Extrusive rock

Can be used for:
•construction projects
• road base
• rail roast ballast
• asphalt pavement

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It is muddy brown with patches of white. It is heavy and has small crystals. It is rough.

It is extrusive.

It can be used for:
- building construction
- as aggregate in concrete

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Grey, Black, White. Has crystals all over. Jagged

Gabbro is intrusive.

Uses of gabbro: ornamental facing stones and paving stones.

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The colour is light grey to dark grey. It is intrusive. Used in countertops, tiles and monuments

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It is a light coloured rock meaning it doesn't have many crystals, the crystals are big and interlocking so it must be an intrusive rock. It has a smooth top and and rough sides. Its used for buildings, tiles and bridges

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there are lots of air pockets, it is rough and a creamy white
the rock it really light weight
it is extrusive

it can be used of exfoliation,  or make concrete

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-Rough, hard, has obvious grains and interlocking crystals. Many shades of gray and brown.
-has smaller crystals so would be classified as intrusive.

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-grey
-large crystals
-instrusive
-smooth of top
-rough on sides
Used in
Paving, monuments, countertops

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It is a dark grey colour and a rough texture but is smooth on top. It is also a little shiny. So it is an extrusive igneous rock. It can be used in buildings and many design elements.

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its a dark grey colour. its also hard and rough. its an extrusive rock because it has larger crystals

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Dark in colour, means more heavy minerals.The basalt is smooth.
Because of all the small crystals we believe the basalt is extrusive. Construction projects

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Light weight with lots of air pockets. Is a light creamy colour. Has fibres of sorts. It has no crystals

It is extrusive.

You can use it to:
- exfoliate dead skin
- make light weight concr

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• irregular in shape
• rough texture
• dark colouration
• small crystals
• looks and has nickname as Black Granite.

Intrusive rock due to smaller crystals.

Uses Of Gabbro:
• ornamental facing stones
• paving stones
• graveyard headstones
• used in kitchens on countertops.

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Brown, Grey, Jagged, little to no crystals.

Dolerite is extrusive.

The uses of dolerite are: crushed abrogate, concrete production and road base.

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This is a dark coloured rock this comes from it having many minerals, its got a smooth and rigid texture. It has small interlocking crystals. Its small crystals means its extrusive. Basalt is used to make statues, pathways and floor tiles.